Document YrQvzyKvykdqrb430O1429EZV
!~ INTERNAL CC SEFOKBSHCE
MINING AND PETALS DIVISION
essrs.
To (Worn*)
DMneit luuefloa
R. E. By r nr G * L. Dickson B. L. 1 nga 1 1 s
E. J . K) eber T. P. Norris H. B. Rhodes
essrs.
Copy to
F. H. LarrI son P. W. McDaniel . A. PiersaI 1 J , W. Rawlings
P 0. BOX 579. NIAGARA FALLS. NEW YORK 1430?
Daf* December 7, 1971
Orfjlfiofiofl De/Jf.
CALIDRIA Asbestos - Marketing
Research and Development Department
Aimniing letter date
..
$*)*
Toxicology Update
The following information is presented in an attempt to prepare
you to answer customer questions with some degree of intelligence.
There are st i I I many gray areas but .the government agencies involved
are taking some action.
`
The Environmental Protection Agency (EPA) is responsible under the Clean Air Act for non-occupationaI exposure control. They have just issued proposed stanoards which include no TLV's for any plant, mine or mill emissions. They are proposing that facilities use fabric filters to prevent emissions to the atmosphere.
The Department of Labor through the Occupational Safety and Health Administration (OSHA) is responsible for occuoationaI exposure. They "depend" on HEW and the ACGIH (American Conference of Govern ment Industrial Hygienists) for guidance in establishing TLV's (Threshold Limit Values) and associated information.
The present TLV for asbestos is published in the Federal Register, Volume 36, No. 157 - Friday, August 13, 1971 as 2 mppcf (million particles per cubic foot) o_r_ 12 fibers greater than 5 microns per milliliter of air. The ACGIH has recommended the latter value be lowered to 5 fibers and this may become effective in May 1972. The AFL-C1C has just requested the Department of Labor to take emergency action and lower the value to 2 fibers greater than 5 microns per milliliter of air.
Based on our best available and current information, there are two
respirators which we can suggest our customers use for asbestos
dust. These are the Will son Model No. 1009 with R-520 filter and
MSA No. 36432 with Type "H" Ultra-Filters, described in attached
sheets. Beth of these are approved by the Bureau of Mines for
highly toxic dusts with TLV's less than 2.4 mppcf. These are cn
the Bureau of Mines Approva1 List 218 in their Information Circular
8436, date: 12/31/63. We should discontinue recommending the
Willson No. 600A, which has been used at The -plant. The plant w-i I I
probably change to one of the above.
UCC 023588
We feel that the two suggested masks will readily conform to even the most stringent new regulations. .
Attached is the latest issue we have of the Federal Register which lists TLV's. Asbestos is in Table G-3 along with amorphous silica CCab--0 -- SI 1) and other minerals. This list may be of value if your customers have questions about other materials.
There is genera I agreement on the following:
.
1. Asbestos is an important mineral necessary to the
American economy. Its use will not be outlawed.
2. Asbestos Is a controllable occupationaI hazard,
not considered a serious hazard to the general
pub I ic.
3. Asbestos bound in resin or similar compounds or
systems does not constitute a hazard.
4. Asbestos can cause lung damage and may, especially
in combination with some other substance, be
associated with cancer.
We are proceeding as rapidly as possible to develop an action plan. At the request of many customers we are preparing a booklet or re port for public dissemination. This will outline Corporate .views on the general subject of asbestos toxicology.
None of the Information in this letter should be considered as Corporate policy and you should treat it accordingly.
/cb Attachments
UCC 023589
This V/illsen series provides o comp,'ere range of protection against common industrial respiratory hccards. One basic facepiece
cssembfy co-, oe fives with c variety of cartridges ard filters--combining versatile, economical respiratory protection with wearing
comfort. A facepiece can be quickly modified for other uses, by simply changing the cartridge-filter combinations.
Facepieces ore maided of resilient rubber with soft, comfortable, rolled edges and ecsily adjusted elastic headbands. All models
can be quickly talers apart or.d easily cleaned.
.
R520 (2o* cf_2]_
E-: ;;s
6.9J
6.20
5.90
0
0 n\
44 Caring
-- Cl -- f(v croltctien O.ir. jj it
em of OriJ.lu; is;srs.
m
V-ilf
q:Ft539 Casket *519 Femtlt t Fitter Holder
_ For protection
amst tKe inhalation
cf radionuclides and
highly loxit dusts,
fumts and mists hax.ng
a TLV Jess than 0.1
milligrams .per cubic
m<Ir tf 2.4 niilisn
particles per cubic loet
and *her* the con
taminants ean centra -
tion is Inown not la
exceed 100 limes the
concentration limit for
the tJdionucliae in
volved or 100 times tr.t
threshold limit uiut
it<tKr 0pr--st *;`t(vi;i1-Ere-;^-
Cult v-i
.>;cri
eni {rrii'-jriiK (r.re-
f. "-l tJ-'.rs:;! i-.i
R-ilS filtir.
TU rcy
.
f\__.i'.
i*
fii
.
(1
R3S1 " For protection against metal fumes:
dusts not ii;nili;anilir prert tenic {nan ins;
pntunocanicsis ca-ivcIftg dt:sU* mists s-ii Chronic acid mists.
dlCP -- f fasten is *! --; -r,
j laning r.a t"Ji
0.1 rr t T
cf
Crf JSsC lifC'J ft*-: Jtl.
icHs i-.i
-
dl tJtirj'ji ir.i flZ?2
P.ZZ4 --- P'i fitter tied *.;i -- 41 fj-t re - for Ew'tJj sf Vi-ti id-
c rMi PiiM S:rsy
A Heritor <9^1 A).
"JJ -- For PrciitiiOS
a;a:njt 0.3** by toiUJnf eancrnlraticns cl
c trjjr.is
Maori 21d a:id pm.
--44--Prolfdisn ap'nst amrncnij in contrnt'Alic*ii not exceeding
0.1*!* bjr tolune.
UCC 023590
^4S-^Prolrcticr against metallic mercury u*
porj.
JU15--- fer Profttln
against C-its rot t'Jailicantfy mvt tcnc
mthaonrpnItiejtsf.is AlpsorcdCu"ctu^j*
mists, Chromic ai-d eiits and fiuitmci
dust
ORDERING
~41r 43, 44, end 45 Ccrtridc.es ore pocked 4 to fcox, R472 filters pocked 100 to box;
INFORMATION
- fIters packec 10 end 40 lo o box; K546 PrerTircr for 941 p Point Respirator packed 10
5
oour ii<*7 3J.1*
LIU t,'5
M-S-A Custom Cotnfo is a comfortable. and versatile rcs-
pirator with double filters, tillering the wearer a variety of
breathing proteeLir.n--all with one facepiece. It takes only
a matter of seconds to switch filters to provide the exact
kind of protection needed -- whether dusts, mists, fumes,
smokes, toxic particles, radioactive aerosols, or extra finely
divided particulate.
'
. MORE COMFORTASLE FACEPIECE--The facepiece of the M-S-A Custom Com to is made of a soft Hy car rubber which conforms readily to the contour of the face. The unique inturned lip construction and the deep chin cup supported by the exclusive four-point floating yoke suspension made
of formable aluminum assure a close, comfortable fit. Best
spectacle integration of any dual filter respirator.
FOUR-PIECE HEADBAND--An adjustable four-piece A^-in, elastic headband holds the floating yoke firmly and com fortably to the face, accommodating all head and face sizes
and contours.
DELRtN CARTRIDGE HOLDERS--Another new feature is the chemical and corrosion resistant Delrin now used for car : tridge holders. It's dimensionally stable, tough, and rigid and eliminates potential leakage points associated with
~J other systems.
! LOW INVESTMENT ADVANTAGE--Adaptability to different hazards means investment in respirators can be kept low
j without losing effectiveness of protection.
| THREE FILTERS FOR SINGLE FACEP1ECE-M-S-A Comfo
j facepiece can be fitted with any of three fiiters--an inter changeable feature that means real economy.
| TYPE "F" FILTER--Type "F" filters are approved for all
j dusts and mists not significantly more toxic than lead. The : Comfo Respirator fitted with these inexpensive filters proj vides economical effective protection where dusts are the j only problem. Bureau of Mines approved. BM-21SS
' TYPE "S" FILTER--Where metal fumes are a problem. Type j "S'1 filters extend the respiratory protection of the Comfo to include a range of particle sizes considerably finer than
: that covered by Type "F': filters. Bureau of Mines approved 1 ^ofjgraes not sicnifienntiv more toxic than lend. BM-21B-69
l__TYPE "H" ULTRA-FILTER-^Where toxic aerosols and t ~extrc-TnrK~-frr.r-pr.~tkree-firyThe problem. Type "H" Ultra
Filters provide maximum breathing protection. They : effectively filter fine smoke and highly toxic particles j including radioactive dusts, as well as air-borne organisms i such as bacteria and some viruses. Every filter is tested
and certified to be at least '9.99% efficient against 0.3 micron DOP smoke. New- domed filter has 50'J~,, less bre3thJ mg resistance than former modes. Now approved for mate
rials more toxic than lead, BM-21B-90
......... iVrfiejt - 2 //-?q flewe*. 2.30 / left SS -- 2.00
CATALOG NUMBERS
10-86430 10-86431
M-S-A Custom Comfo Respirator with Type `F" Filters, Bureau of Mines approved for
dusts
M-S-A Custom Comfo Respirator with Type "S" Filters, Bureau of Mines approved for
net; ni j g f ^ n M r rp r>c
M-S-A Custom Com.to Respirator with Type
"H" Ultra-Filters, for extra finely divided particles and for toxic particulate matter ^
M-S-A Comfo Resoirator equipped with type "H" fixers
tor protection acamst extra imeiv dinced ana. cr toxic
partiedate matter. Approval No. 213-Sj.
1 to 71 ...........................................................each S E.E5
72 to 143.........................................................each
7.E0
144 or more ................................................ .each 7.40
UCC 023591
Subpart G--Occupational Health and
Environmental Control
1910.93 Air coiitaminunl-. (G:i>f!. vapor*, fume;, du;l, ami tui;l;.)
fa) Exposures by inhalation, inges tion, skin absorption, or contact to any material or substance <1' at a concen tration above those specified in the "Threshold Limit Values of Airborne Contaminants for 1970'" of the American Conference of Governmental Industrial Hygienists, listed in Table G-L except for the American National Standards listed in Table G-2 of this section and tO tOT*
UCC 023592
1030-1
RULES AND REGULATIONS
except for values of.mineral dusts listed in Table G-3 of this section, and <-) con centrations above those specified in Table G-l, G-T and G-3 of mis section, shall be avoided, or protective equipment shall be provided and used.
(b) To achieve compliance-with para graph <a> of tills section, feasible ad ministrative or enrineerinp controls must first be determined and implemented in ail cases, in cases where protective equipment, or protective equipment in addition to ether measures is used as the method of protecting the employee, such
protection must be approved for each
specific application by a competent in
dustrial hygienist or other technically
qualified source.
Table G-I
Eubflinct
p.p.m.- zng./M* *
Abate.................................. *........
15
Acwldeiivclt...... ....................... 200
300
Atftic acid...................................
10
2S
Accf.c anhydride.........................
s
20
Acttor.e........................................ 1,000
2. 400
Acetcr.;!riic.................................. 40 ' 70
Acetyl'ne dichloride, see I, 2*
Dichlcrocthylene....... ..............
Aceivlenc tetrabromide........
1
14
fl 1 0.25
Ac-T^-midp -- Skin...*.................
. 0.3
Acrriar.Itriie--Skm................... 20
45
Aldrin--Skin................................
0.25
Allyl a'cliol--Skis_______
25
AIM chloride..............................
1
3
**C AIM cWcldvl ether (AGE). 10
45
AIM ;-rtpv| dirulndr.................
2
12
2-Amir-x thanal. see LthanoJ-
2-An.ironvrid:ne.-..-____ ____
ai
50
Ammonium sulkmatc (Am-
Jnalc)..........................................
.
tt'Aa;y! r.cctate....... ................... 100
scc-Atnv] acc.ale......................... 12s
Aninne--Skin.............................
s
An ifid ir.e io. p-iom or.4) --Sirin... .......... .
Arjtimony and compounds
{* Sh).........................................
.
ANT l* (alph3 nphlhyi
.
Arsericand compounds (if. As).. ................ ,
Ar<ine.......... .................................
6.05
Asinnhof-methrl --Fk:r............. ..
.
BlT'.um isolulr'jL' cornrounds)....
,
p-UeT.i'viuinor,*1. sue Quir.one.
Benicvi pf-roT.d?................... .
.
1
Eiphfnvi,ce Diphtmvl..............
B^pbrnol A, see Dif'.ycidyl
2 35
15 525 650 10
0.S
as
0.3 as 0.2 0.2 0.5
5 s
Boron citide.......................... ..... .
Boron tr'.hroTT'.id*.......................
1
C Bcron inftuoride.............
1
0.1
BTemir.e per.t'ifluoride.... ........
ai
Brom.oform--Skm............... ......
0.5
Butadiene (1, 3-bu:adii'n<i'l..... 1.000
Butar.ethiol, ice Butyl mcr-
.
15 30 3 0.7 0.7
'5 2 200
2-Butancne--............................. I-na'^cv pih^r.ol {Butyl Cel-
los^lte}--Skin.......................... B'jtvl orrtnte (n.butyl acetate). j*Butyl acetate....... .
200
50 tw 200
500
240 730 950
Butvl a'.r^hch,...*,,............ .
ICO
aec-Bu'.yi alrchal..,........___ 150
tert*Butvl alcshrl....................... 10a
C J)ul\lamirse--ikin..............
5
C tert-Eu:vi chremate (45
CrOj5-k!n .. .
...
n'IJ'Jt^l c'.TCkdvl ether (bGE).. 50
0.5
p-tr:i-ru*v.:c'.u?"?..................... 10 C 3. It rum arfcnat*;..................... . .............. ..
^
**Carv.;(fvrficlie)..............
1
Cafarti iSevja i-).......... ......... ..............,.
Carbon 1 'aek.. ............................
,.
Carbon d.oDJc.......................... . 5,000
Carton mor^-ijde.............. .
50
Chlor dave-Skjr........................... ...
..
Chlorrui^d camph^nc --?kjn....
Clii-.n:-;-eJ dirl-^uyl oiide........
..
1
Ch>rf:' d;!f .................... .
0. 1
C Ci.'.cru.v trjfij ................
a1
3^0 4fO SCO
15
0.1 270
1.5 (0
1 5
5 3,5 0.<W 55 {Li 0.5 0.5 3 a3 ' a4
Table G--I Coo.
Substwn
p,p.m. mKjlf11
C ChlureucetqMchyde______ af.'hlnrc.\cr
tphenarytcnlondel.. Chlorobenzene (nonocMoro-
1 a o5
0-Chiorobeniylidrn* rr.ri:n!*? (OCBM).......
acJ
C!i:'roDrv):nr.rtieihanc..
300
?'C!ucn>i.3-butadiene, see
Chloroprcnc........_____ _
Ciibiodipheryl (42 percent
Chlorine?--Skin,.....,*___ _
Chbrcdipbenyl i54 percent
Ci>lori:;e>--Skin................,
1-Chbrn.2,3-cpjiypropane, set
E 7-: chiorhydrift.
___ _
2-Cbloi-oethanoi.sM Ethylene
chiorphydrin........................*
ChloToethylene, see Vinyl
charade......... ......................
C Chloroform (tnchloro
rarthsr.e)........................... ..... _ 50
1-Chloro-bnitroproPane........... . 20 '
Chlorapicrin.............................. . Chtorop:-ene (2-chJpr0-1,3-
ai
butadiene)--Skin.--......... . . 25
Chromium. sol- chromic,
' chronniis salts ss Cr______
Metal and jnjoL rnlts___ ......
Coal tar pixch volatiles (ben'-
xencsoluble fraction) anthra
cene. BaP, pbenantlirene,
acrid j no, chrysene, pyrene.......
Cobalt, rr.eul fume and dust.,..
Copper fume. .........................
Dusts and Misti........................
Cctton dust lrav.-j.-_.*..............*
Ctapj herbicide......................... .
Cresol (all isomers}--Skin.........
CroionnJdi'hvde.................... ....
Cum ene--Skin........................ 50
Cyanide (as CN)--Skin-.............
Cyanoreu.
_______ 100
Cyclohexane.............................. Cycioheiunol.....................
300 50
Cyclohexanone....................... M
Cycloheicne......... .................. 30U
C ydopemadienfi.,,
*. 75
2. 4-D..............................-.............
DDT--Skin..................................
DDVl'.see Dich'.orvos...............
Decaborane --Skin..........
0.05
Dcmuton j -Skin............ ......
Disceionealeoiiol (4-hydroxy-
4-m nil y!-J-pe:'.:a::one),
- 50
lj-dianiino'-tliuno, see
Ethykr.eUurmrie.,................
Dbiomcihane........ ...............
0.2
Diborane....................... ......... Dibutyl phosphate--,,..............
0.1
1
Dibutyiy.inriuhtp....................
*C Dteltioronwiylcne...............
C o-DichlCTotjOntene.,-.......
p-1) ichlori-ibcr'.zene_
..........
Dichlorodir.uoromethane.......
500. 1 l, M705
l,3'Dichio7o-5l5-dimethyk
hydamom.......... *................
2001.1-Dichlorocihane,............----- 100
1.2-Dichlnroethyk'ne-....... ...
C DieMorxjhyi ether--Skin__
15
Dichlororutthunr, see
Meihylcncchloride-*-,. ........ Dichlr.romonofluaroniethane.. -
i, cm
C Ll-Diehloro-l-finroethnne___
10
l.?-i>ich!oropropino. see
Fropylunedichioride....____ _
Dlchlorote trail u-vot'Diane...... 1,000
Dichlorvos (DDVpj --Skin........
Dieidrin--Skin......... .
Diethylamide.....................
25
Picibylamino ethanol--Skirt.
30
*'C DVihyU-nc tramino--Skin. 10
DHliyk'tlii'r, see Ethyl ether...
Difluorodi bremo methane
100
C Diclyciilyl other (DOE).....
as
Dihydrniybentcr.e, soe
HydroQuhionc.--................ Diisobuiyl ketone.,............
50
IHisopToryJanirf--Skin.. .....
5
DimethovymrUiane, set
M.-thylat....................................
Dimethyl acetamide--Skin..... 10
Pnru-thy linivne.................... ...
10
Dixetlij ijminobcniene, see
Xy lnlrne.......... ........................
PirnnhyirmilinoiN-dimelhyl-
ar.;iine) -- Skin.........-........ ....
IJ imot hyi <*n: <n\c. so*' X y Irnc. -,
Dmirthyl l-i-iJibromo-'.Vl'-di*
elilororthyl phosphate,
,l>;hronn...................................
Dime? h vlf Tr.T.arn ide--Skin.....
V,ir 1ifriB'tfiy'ili'M't-inone, sec
Pitsohuiyl kt toil'..................... l.J-Diriirth*. iii>htr:i:me~<l{in...
as
Dime iLylpuUuLkite........ .
J as 350
a4
l, CM
J a*
240 100
a: 90
0,5
1
0.2 0,1
0.1 1 u1
24! 5
1,050 200 200
1.015 20)
101
0,3
0,1
240
0.4 al 5 5 0.4 300
4.045600
0.2 400
4.200 00
7,000 3 0.25
75 50 42 5-M
as
200
20
35 IS
3 30
See footnote; M end of table.
UCC 023593
FEDUAL fti
Table G-I--Con.
Sutxtuce
p.p.m,* mgjMi ,
Dlmethylraltite--Skirt..........
DlniiruLicjurne (all Corners)--
Skin......................... ;................
DmitreHO-errsof--Skin..
Diimrotolurne--Skin................
Diot-ane tDirthylene dioxide)--
Skin................. ................ .
Diphenyl. -........... ............ .
Diphmyl amine........................
Dlphenylrr.eitiri-e (titsocyinai*
tsee Methylene bisplienyi
isocyanai* (MUl)............. .
Dipropyiene piyeol methyl
etiier--Skin*.......... ........... ...
Dj*sccv oetrl phtr.alate (Di2-
eihylhfxylphthalate) -________
Eirdosulfin (Tbiodut si
skin. -..................
.......
Xndrin--Skin......
rpichlorhydDn--Skin___ ......
E PN'--Skin...................................
1.2'E poxypropane, see
Propyleneoxide.........................
2,3-Epoxy.l-propanol, see
GlycWoU. ....................... ......
Elhanetlilol, see Ethylmer*
ptan....................... ......... ......
Ethanolamine..................
2-Ethovyethanol--Skin....... .
JUEtbexypthylaoetaie (Celifr
solve acytatc)--Skin.........
Ethyl acetate............... ............ *
Ethyl herj'^te--Skin___ ......
Ethyl alcohol {cihanol)...
Elhylinur.t..................................
Ethyl sec-amyl ketone (5-
melhy^hepxanone)*
Ethyl Uenienc............ .
Ethyl bromide.......________
100 a:
100
3 200
1W
400
25
,000 10
12050
200
HcOtangr.e')...........................
M
1,000
400
E:hyl Somite.............................. ` 10a
Ethyl mercaptan........................
a5
Ethvl siUcv.e..........................
100
. Ethvb'nc cMorohydrin--Skin. -
5
Ethylerv'diamine....... -..............
10
Ethylene t5:hronvie. see 1,2-
Dlbronto- thane....................
Ethylene dichloride, see 1,2-
Dirbiorwthanf.......... ..............
C Eihj`li*r.A ciyeoi dimtrate ftttd'or Nitroclycerin--Skin...
4(k2
Ethyler.t plycoi ir.pnnmcihj`1
etiter acetate. se.- Mrthy]
celicsolve acetate.............-........
Etr.yurrf imine--Skin............ Ethylene oeMe............................
as 50
Ethylidiuc rhlorldc. see 1,1-
I>iclilorL<,than^........................ .
N-Ethyimcrpholine--Skin........
20
Ferbam................................... .
Ferrov^nadium dust..*--......
Fltiofidc lax F).------ ---------------Fluorine.................... ................. Flu orotrichicrome thane--
1.000ai
Tornilc acid.................................
Furfural--Skin.
-
Furfuryl alcohol......................
5S
50
Clycidnl (2.VEpoxy-lpronanoli...................... - --
SO
Glycol monecthyl ether, setr
2-Ethoxvct'ianal........................
Guthiou, see Annphos*
methyl..................... ..................
Hafnium...................................... .
Heptachlor--Skin..................... llonvir.e D.-hepta^el................. Hcerwliiorr-ulh.tnr -Skin.v.
500
1
ilnachloronapiirhalene--*kln... Hexane m-hetanc)........ 2`Ho.canot`*.................... ............
500 too
iltnjtie (Methyl Isobutyl iotonel.................................. .
a-lJcxy| acetate....................... ] l v dT3i;nt --Sk \n........... -.............
Hydrnccn bromide..................... C JIydrnreri clilcnde......... .
Ilydroccn cyani'l^'-Skhu Hydroucn prrotide..,............... l! ydrcvvu s-'lcnuic--.............. *
II ydrc4Uinene.................. *ln-!,-nf........................................ Indium and compounds, aj In... C lodmr..,--.............................
100 so 1 3 5 10
1 aoi
.......
ID ............. ..
0.1
Iron oilde feme........ ...............---
Iron salts, sciu'-de, a.14 Ft.-....... .. Isoar^yl i.relate..........-.............. Isoaravl alcohcJ....................... lsuhut yl ,,:r! If',..... ..................
Jsobutyl al.chcl.....--------------jscphOTOT'r,............................ .......
Isopropyl arciaie.,.............. --
isCfmPVl a:-'nh'?l,....................... lsoprupyl-imuit......................... *
100 lno 130 100
2i 250 400
j
1
ta
1-3 360
1
10
00
ai (u 1a9 s
740
540
1,400
100
1,900
IS
130
S493Q5
230 2,000 1,200
300 1
650 16 25
1
90
94 15
1 13
0.2 5,600
9
20 200 150
0.5 0.5
,000
ID
i.too 410
410 300
1.3 10 7 11
Li a1 2 45 0.1 1 10 1 525 300 700 300 149 9,*0 '(SO 12
RULES AND REGULATIONS
10505
Titr G-I--Cob.
Taxle G-r--Con.
Taxix G-I--Coo.
nt*iin'
p.p.m.* m;JM* *
Substance
p.p.m.* irp./M*1
Sabstancs
p.p.m.* cg./M* *
Jj;prop)!f!Ur.............................
2joo
fctptopsic-.yc;eyU:hir (IGE). 0
340
JCtier.e.........................................
CLS
CL 9
Lnd
..........................
IJ-uiir.e--ii;!n--......... .
0.15 &5
L"-h.;u~ r.y-J.-icc..........................
0.025
L.T.'J.
pct:j;e-^ri
fis)............................................ laOOfr Mafnesiua oxide'futne...............*
1.500 15
Milathlon--bkin...*___ .......
li
Mi-el; ar.hydnde.......................
0-35
1
C M2r.far.e3c aad tHcpcunds,
is Mo........... ........................
S
Mesityl cxhlc.......... .................... 25
100
Methinetr.toi. see Metiyl
' crcap:an.
.......
fl-MethoxyethanoL see Methyl
ctU<dve,,..*_________ _____
Methyl eceisic.................. --
200
610
Jjethjrl acetylcr.-? iprspynt;,*.. 1,1)00
1,650
Methyl ft?e:y!*Rer-r9pudi*ne
mixture OIA.PP},..________ 1*000
1**05
Methyl ;cry.at*--Skin,.............
19
05
MethybNwirncth-xy-ir;hnr.e).* l. rx)
3.100
Methyl td.-ohol trr.crr.ai.&i;.,*... 2iO
260
MeihylanuEie,.............................
m
12
Methyl amyl ain-r.o!. ;ce
Methyl isabutyl c:rinoI*
Methyl L^amyl ketone.
100 <7i
Methyl (n-amyi) ketone (3*
Hep:ar.5-D).............................. ioa
4C5
C Mrtiiy! cro:r:i.io--;kin........... 20
80
iTrthyl butyl
see t!-
HeianoTc............. .................
. ..
i!thyl ce. 'alve--akin............. 25
so
Methyl ce.lo-.nIvc acetate --Skin
Vi
120
Methyl ch..-reform...................... 360
Mcthyicvcloheia:.,-.............. .
I'V)
1.000 2, LOO
Mcthykx c:t'i'C.xar.-j!., .............. .. be
4TU
CKMtthj I-.-?!:!:<"ts-i"rtc -- Skin.. 100
. <60
Methyl tTi.yJ ketone C-lEK),
see V-Hutaror.o....._______
lioiliyl f.r- :Ltc...__........... 100
260
J!t:hyl ic.::''lO --C-?"T. . . ............
5
2S
MdUyl aryl < nr: :::">L --5ktn.
25
1W
u:yl LlLGii*', sec
Ucxone..
.
isocyanate-- Skin...........
0.02
0.05
M'lhyi njerrapt^r..................
0. 5
1
Methyl met:.'--:,.................. 100
410
Methyl pirpyi k<-1 sr.c v-
Pettt ansae......................... .........*........ ,,,,
C Mrihyl Miicatc...-.................
5
00
C * Methyi yiyf::r................... 100
450
C Methylene bPsMuyJ
isocyanate i.MLiJj...................
0,02
0.2
MfllyMc.-unu:
Soluble curr.po j:: J............................
5
Insoluble eo.. ;:.>.................................
15
Mononu-thyj an:'.i:.c -Skin........
2
fJ
C Mortomcthyi hvdrazjr.c--
Skin........ ........ .........................
0.2
0.35
Morphchr.c-Ski:;....................
CO
:o
Naphtha (caaiiir)..*,,.............. 100
Naphtha.:*- nr....... ..........
10 50
Xlftel carbonyl................................
0.001 0.007
Nukci,
and soluble
rmpd*. a? Ns...................... ................... .
1
Nicotine -- skin,.............................................
0.5
Nitric arid........... ......................
2
5
Nitric ca; Jr..............................
25
30
P-.Vitrei: -- SKIT............... .
l
6
Xilrcbci-.je::*--S * if... .... ..........
1
P'Nltriv.'i.;::il<cr.rci!C --S km......... ........
5 1
Nitrcclhane................... ............. 300
310
Xitrcrcu di'iti:!-.'................ .
5
0
Nilrujren. t:i.;uor;.p.................... NltrLvhvrerm-'ckir....................
10 0.2
o
Nururno'har.c................... ..... 100
75U
I-Nstrrvprtpin* .. ...
25
00
r-Viifopr.-'inc...........................
25
90
Nitroift'U-.'T-.' --akin................
5
30
Nitfotrr. :. i'TG:'..c:ira::c, see
Ch!rt-r;p.v-;in...........................
OttirhloeONapbtt.a cs.c-- akin....
O.i
................................... ..
1,900
*Oil nsiit. partirnlate....................
i
t* :rci:de....... .. .......
Otahc a
.................................
0.002 1
Ciypon dillur-ride........ ........... . < llv`tx.......................................... Fa IJ rjy _ y'fcjn............ ..........
D. 05 0,1
ai 0.2 as
I'-i.irr, ii'csi:| .'.si' 1 <\.iui'U ro:n-
, I'1 'in-!*.........................................
a oi
"ohum fl
t.ltt I llSrl} --
i'Lih................................... .
0.05
^"hnni hvcJr^-u-Jr..................... .
>hl.iur............. ................... ........
Mrtidu, i) jj; wnl...................... slf' c!ir;i;ir
Sulliir rl:n\;.k. *
y
0.1 VUI
.5
0.5
1.IW C 15 13
tuHnti..Miiueuj;.:::;:::::;.: i.oCOwO
acoo
Fee tachtOlcs ;lt uul of tabic.
Sulfuric arid....................................
Sulfyr rriGnochlondt........____
1
Sulfur pentaflnonde.
O.Q25
SuJfuryi foundc.......... . Sysroi, s&c Ucmeton ............ .
5
2.4,5 T..................................................
Tantalum........................ .................
TF.DF--Skin.....................................
Tellurium................. .......................
Tellurium hexafluoride.........
0.02
TIPP-Skin......................................
C TerphenyLs... .................
lfI.!,2-Te:raciiloro-2,2-difluoroethane............... .............. ......... MO
l,l.2*T*rrachloTO-1.2-difluoTO-
ethane................................
soo
1.1,2.2-Tf tfaddoroerhane--Skin
i
Tetrochlorocthyiene, see Pcr-
eh'Aroethylene.......................... .
Tetrachloromcitiane, sec Carbon
tetrachloride............. .....................
Tetracliioronuphthai^ne--Skin.....
Tetraethyl load (as Pb)--Skin*.
Tetnshydrcfuran___ .................. 200
Tftrasneihyl lead las Pt>)--
Skin..........................................
Teifumcihyl sureinonitriie--
Skin............. ...................... ..
0.5
Tetmnitromethanc-.................
1
Tetryl (J.4.fVtriiuirophenyJ*
tncthylnitraminel--Skin.......
Thalliurii (soluble com
pounds)--Skm as Ti...,.......
TUiram...,,........ ...............
Tin (inctrnnic empds, except
Snli* and SnO:>..... ........... ..... .
Tin lorfanic emptis)....,_______
C Toiuene-V.-Mmycyariatc.... .
0.02
o-Tolul'iiue--Skin............... .
5
Toiaphcste. sc<; Chlorinated
camphvnp..................................
Trii'uiyl phosphate___ .........
l.I.M'richirtro'thanc sec
M*ihvl chiorofOTm............. .
1,1.2'7`richIorfVthane--5ktn____ 10
Fsratiiiou--Skin.......... .................
Pcr.laberane............. .................
a oo5
Fenlac'ilr.ronaTihthalePe--Skin__
PehtaCiUcTcpnf'npl-- Skiu..............
Fenianc..................................... 500
2`Fcntancne......... ....................... 200
FerthWroir.eihyl mercaptan___
0,1
Perchloryi flucridii.................
3
Phcimi-- Sic j:i......................... ..
5
jj-i*!ienykuc illumine--Skin..*...
Phenyl ether (vapori__.........
Phenyl tthcr-biphcnyl
mixture (vapor:.......................
Phenylotliyknc, y*t* SLyrrne......
Phenyl c^vc.dyl tther (FG11?__
10
Fher.y^jydracine --a-kin,.......
5
pimsdrln (Mcvinphos ^ >--
Skin............. ...............................
Pho?f-'nc (carbonyl chloride).-Phosphine............. ...... .........
0,1 0.2
Phosphoric acid................. ............
Fh r.-phorus (yflluw \..............
Phosphorus pxiujeliloride....... ..
Phosphorus pmtr-iu.tide.......... ..
Phosphorus trichloride..... ........
G.5
Phiholic anhydride......______
2
ricric acid--ikin...........................
Pival 3M2-Virulyt-1,3-
Indandiorn'l.......................... .
riatir.um (Soluble Salts) us
Pt..................................... ............
ProParpyl alcohol-Skin...
n*l':opyl acetate......................... 200
Propyl aicjimi............................ 200
n-Propyl nitrate......................... 25
Propyh'iic didiloridc___ ....... Propylene ;:su:*c -Skin.......... ..
75 o
Propylene oxide.......................... ICO
Pfopyiii*. si*c NIctliyLid*eyloi>c___ ........
Pyrethrum.............................. .. Pyrvlinc...... ............................. . ^Up'rmr............... ...................
; i
at
UnX-Skin................................ .
Rhodium. Meta) lume and
dusts. K!i.........................
S<.`iUhlk SUlLS,.............................
Rcunci........................... ................
Kuloiionc ion:iriirrfi.il)................
S*Wnvnu '.osv.mut'.'i'-'AS Sr}.........
Si`h": ij mu J.rx.^Vj.-.ndi.'................
0.06
Trichh>rimietiiain\ si'c Chloiw
! rm..,.......................................
T;irhlnrn,.n;d;thal''i)e --Skin........
l.2.3-Trirl!-inM>f|,rJJ'C__ _
M
l.l.V l ruiiljro I.V/k iriilueiCK
C',!'..n!r.....................................
Tfii'lhyb line............. ..............
25
TriJlin^oinuiigbruhicmi'tlinhi'... 1.00J
1 6 0.25 20
15 5 CL 2 CL 1 0.2 1X05 9
<.170
<.170 36
7 fd. 100 590
/a 159
3 8
L5
0.1 5
2 0.1 <U4 22
45 0.1 0.91 0.5 0.5
1,500 700 0.8 13.3 11> HI
60 22
Cl 1 04 0.4 1 0.1 1 I 3 12 0.1
ai
a 002
40 600 110 350
5 240
r 15 0.4
L5
ai aooi 10 $ 0.2 0.4
300
7,fVXl tft)
a UXJ
Trimethyl hc^tent.........
2,1.6-Trinitrcphenol, sec Piertc w:id..................................... ..
S^.O-TrinitrophenyJmethylnitriminc. sc Tetryl__ .....
TriAiirotC.uene--Skin.. ....
Trionhocrrsyl pfioibhate...... Trtphenyl paosplute.............
Tanrsten and compounds, &$ W:
Soluble....*..*.__ .......... Insoiubtc...........___ ____ Turpentine.............. .
Uranium (natural) $oL .tid insol. compounds as V___...
C Vanadium: ViO* dust......___ ....___ _ VjO* fume...................
Vinyl bentene, sec StiTene.... *C Vinyl chloride.................. Vinylcyanide, sec Acrylonitrile. Vinyl toluene................. .............
Warfarin................................. Xylene {xyjnl),............ XyUdine--skin....................... Yttrium.................................. . Zinc chloride fume.--.-.,.__ ... Zinc oxide fume................ . Zirconium compounds (as 2r}_.
25 120
1.3 0.1 3
----------............. 100
I 5 569
--------- *
a2
.............
.........
0.5
ai
500 1.300
100
.....................
100 3
............. ............. ............. ............
4*0
0.1 435
^ 1 I 3 3
1070 Addition.
Parts of vapor or eas per million parts of rantaminated air by volume at -S'3 C.und 76:)mm. lir prc;sure.
1 Approximate rmllijrarns of particulate pe: cudic meter of air,
(No footnote ,4c'r Is used to avoid confusion, v-'ith ceiling value notation?.)
^An atmospheric cuucvnirotion of not more tJian 9,92 p.p.m,. or persur.jl pruirction may be nt.-ssary to avoid headache.
* As sampled method tJiat does not collect ra^ar. ri'or control of ctueral roan air. biologic r.iouiloring Is essential for personnel control.
* Tabu: G-2
8~hour time
, toeip^fed
average
Benzene (Z37,4r-lSC9)' 10 p.pjn.
BeryHium &n^ beryllium compounds (Z37.29-1Q70) . 0.002 mg./M\
Cadmium dust (as Cd)
(Z37.5-1970)......... ............. ..
0.2 mp./M1,
Cadmium fume (as Cd)
(Z37.5--1570) ____ *________
Carbon disulfide (237^-
19G8) .......................................... 20 p.p.m.
Carbon tetrachloride
(Z37.17-10G7) ........................ 10p.p.m.
Ethylene dibremide
(237.31-1970) _____________ 20 p.pxa.
Ethylene dichlcrlde
.
FPrmalclchvdc
(237.1 G-1967)
............*
Hydrogen fluoride
(237.26-1909)........ ................
Fluoride as dust
fZ37.23-19G5) ........................
Lead and Its inorcanlc com
pounds (237.11-1969)____
Methyl chloride
(Z37.16-1GC3) _____________
Methylene chloride
(237.23-1969 ) _______ ______
Orgarto (alkyl) mercury
(237.30-19691 .................... -
Styrene (237.12-1569) ............
Tctrachlorocthylcne
(237.22-1967) ____________
Toluene (237.12-1957).............
3p.p^n.
3 p.p.m.
2J mg./MN
0.2 rrtv M*.
100 p.p.m.. 500 p.p.m.
O.Ol m;, M\ 100 p.p.m.
ICOp.pm. 200 p.p.m.
AcecpfcMc
ceiling concent: oiion
Hydrogen sulfide "(Z37.2-15CM .......................... 20 ppm.
Chromic iicltl nud chromntes .
(237.3-1971)
Img/lOJ!1.
Mercury (Z37.8'1971)............... 1 mg7lC-M\
KDESAL S:EOl5TtR. V
UCC 023594
<$>
10506
Tablz c-3-Mivt*At Dcsts
Substance
Mppef Mg/M 1
Smear Crvsinliine: Quarts (respirable)
* .' . 30 > lOragW -
CiSIOi+! ^SIO:+3 Quarts (total dust)_______
CtistobaUte: Use V* the
xalue calculated trom the count or mass Jorniuiat for Qtiarti. Trioymite: Use H the value calculated from the foemulac for quartz. Amorphous, including natural diatoinaccous earth........... .
Tremollte........ ........................ .
%S!Or+2
20 BOmp.iM* ^SiO;
5 20mg/M!
%SiOi
Etllea:ps (less than 1% errs-
tatiine silica):
> Asbcsios--12 (ihen per
milliliter greater than 5
microns in length i or____.
7
Mira...................................... .
20
Soapstone..,..-,,......... .... .
20
Talc...................................... ..
20
Portland cement...
.
50
Graphite (natural)................ ..
IS
Coal dust (ip'rabie (raction
less than 5^ $ 10:1
..... ........... -- 2Amp|'M>
or
For more than 5^ S!Ot______.................... Idrap/Mi
Inert or N'ulsance Eust:
KesyiraUic fraction......... . Total dust........................... .
51S10H-:
IJ Snig'M3 SO lInig,M=
N*ott Contersion factors --
mppefX35.3mir.!o:i particles per cubic meter
~par:u les per c.c.
Millions of particles per cut uc fnpi of atr. based on
Impi'iccr 'iorr.pirf rOir:ic\i In- !i:mt-firM technics.
1 Th* porce-uacc rif ervsti^i r.c silica in me formula
Is the amount OKrrrr.iuco
a:r-ior];e samples.
except In ffio?'C m%tan?c< :u wfc irh other methods ii3vc
been
if) Jo applioaUr,
i As determined i'V the T\t::ii>ranc filter method at
431 X phase contrast ?r.ai!uiii',a.t :on.
m Both ouncemrai io;1. and ; vrecr.r quartz for the
application ol this hrr.it arc ilo bo determined Jrnnt
the Iraciiou passing a size^eicctor with the following-
characteristics: '
Aerodynamic diameter (unit density sphere)
2
is 3.5 5.0 10
FcrreiU passing selector
90 7S 50 3 0
The Ti!cj<ure:riffiis under thi< n.nro refer to the use of
*) XHC instrument. if she r'-yr'ir.iM*' fraction of cunl
dust i.<
vjih a M Kt! `.he figurerorrfspcmdinc
to that cf 2.4 Mp'M:in the tabic for coal drolls 4.5 Mp:M*
UCC 023595