Document b56b7nZrBxk8E2QkKej8QNaXg
ikte;-:n.v- ccr^EEFOKOSNcs
(Alh-iC AND r.ItTALS DJV5SS0N
-essrs.
To (New)
Dhriiiofl
loeeflee
/ R. E. Byrne^ E J . Kl eber
G. L. Dic kson T. P. Norris B. L. 1nga 1 1 s H. B. Rhodes
essrs.
CaprH
F. H. Larrison P. W. McDaniel E. A. Piersa11 J . W. Raw 1 ings
P 0. BOX 579. NIAGARA FALLS. NEW YORK M30?
December 7, 1971
Dote
Orfjl/ioflnj Dvpt.
CALIDRIA Asbestos - Marketing
Research and Development Department
Anrwtti/ip Itfltr edt
SrfljMf
Toxicology Update
The following information is presented in an attempt to prepare you to answer customer questions with some degree.of intelligence There are still many gray areas but .the government agencies invoIved are taking some action.
The Environmental Protection Agency (EPA) is responsible under the Clean Air Act for non-occupatione I exposure control. They have just issued proposed srancaras 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 occupationaI 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) or 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-CIO 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. 66432 with Type "H" UItra-FiIters, described in attached sheets. Both of these are approved by the Bureau of Mines for highly toxic dusts with TLV's less than 2.4 mppcf. These are on the Bureau of Mines Approval List 2IB in their Information Circular 6436, dates 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.
j
A J U ;5 O
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 (Cab-O-SiI)and other minerals. This list may be of value if your customers have questions about other materials.
There is general 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 pubI 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.
J oh s
/c b Attachments
This Wiilscn series provides o complete ronge of protection ogoinst common industrial respiratory hccords. One bcsic focepiece
cssemb!y con oe *v:b with c vorie'y of cartridges or.d Titers--combining verspri.'e, economiccl respirotory protection with weering
comfort. A focepiece c=o be gulckly modified for other uses, by simply chonging the cortridge-filter combincfions.
Fccepieces ere --z deb of resilient rubber with soft, comfortcpie, rolled edges end ecsily cdjusted elastic headbends. All models
con be quickly rp'-cn cpp.'t end cosily clecned.
..
^ tp 1C39 j
/-ss X.-V 8.50 __7.65
72 + 7.25
R520 (Box cf 2)
.?t5C
6.50
6.20
5.50 i
3
,RS20l>-- For protection ~i;iinst tKt inhalation e( radionuclides and highly toxic dusts, fumes and misti hiir.g a TLV less than 0.1 milligrams per cub*c meter cf 2.4 million particles per cubic loet and there the con* tam inants concentra tion it knon not to exceed 100 time* the concentration limit lor the radionuchst in* eoid or 100 times tni threshold limit uiue.
R361 -- For protection against metal fu*s: dutti not significantly rori toeic tnjn lead: pneumoconiosis e*oduc In8 dusts, mists and chrwiic acid misti.
fCJCP -- To* s'j'.ectrs in at-*.?s;*e*f. S?n* taivr.j r.o rji t*jn
0.1% by re'i-i cf Organic UCC'i fum s;l.
veM any p..r*i. r 41 cJ'tr4';e tr.i P472
filler.
P.;i5 -- Fe filter tied
:*i ril ca'trirge for
8.*aa of v**n ao*
Crrv: Pamt S-ray
AtsMiior (941P).
-- J3 -- For Prelection
;ansf 0 3% tr
uni c^crntraticns et
combinations ot o';a*ic
vapors and acid cases.
-- 44 --Protection against amnenta in concen trations not exceeding 0.1% by volume.
45 -- Protection a;amst metallic mercury va pors.
fU15 -- Per Protection
a;amst euits not sig nificantly more t;nc than lead. A*so C"ru* moconicsis predupng mists, circmic a:*a mists and nuisance
Cost
ORDERING INFORMATION
41, 43, 44, end 45 Cortridg.es ore pocked 4 to o box. R472 Tillers pocked 100 to box; :1i Tl'ers packed 1C end 40 to o box; R546 Prefilter for 941P Point Rcspirotor pocked 10
5
M-S-A Custom Comfo is a comfortable, nnd versatile res pirator with double filters, oik-ring the wearer a variety of breathing proleetir.a-al! 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.
MORI COMFORTASLE FACEPIECE--The facepiece of the M-S-A Custom Comfo is made oi a soft Hycar rubber which conforms readily to the contour oi 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 3/i-in. elastic headband holds the floating yoke firmly and com fortably to the face, accommodating all head and face sizes and contours.
DELRIN 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 other systems.
LOW INVESTMENT ADVANTAGE-Adaptability to different
hazards means investment in respirators can be kept low without losing effectiveness of protection.
THREE FILTERS FOR SINGLE FACEPIECE-M-S-A Comfo facepiece can be fitted with any of three filters--an inter changeable feature that means real economy.
TYPE "F" FILTER--Type "F" filters are approved for all dusts and mists not significantly more toxic than lead. The Comfo Respirator fitted with these inexpensive filters pro vides economical effective protection where dusts are the \ only problem. Bureau of Mines approved. BM-216S
TYPE *`S" FILTER--Where metal fumes are a problem. Type "S'1 filters extend the respiratory protection of the Comfo to include a ranee of particle sizes considerably finer than that covered by Type "T" filters. Bureau of Mines approved ' not?;rr.ifirant1 v more toxic than lead. BM-21B-69
* 76375
(Type--"H
TYPE *'H" ULTRA-FILTER -MYhere toxic aerosols and
cxtrcTTirh r.... i v. tide; ~r<r'the problem. Type "H" Ultra-
Filters provide maximum breathiae protection. They
effectively filter fine smoke and highly toxic particles
including radioactive dusts, as well as air-borne organisms
such as bacteria and some viruses. Every filter is tested
and certified to be at least 99.98^ efficient against 0.3
micron DOP smoke. New domed filter has 50 go less breath
ing resistance than former modci. Now approved for mate
rials more toxic than lead. BM-21B-90
!i1trF'>,..............................................iVr8*> - 2
iTo**S- 2.30 / *o
-- 2.00
. . CATALOG NUMBERS
v.; <c%, o
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 wilh Type **S" Filters. Bureau of Mines approved for
mictc
M-S-A Custom Conv.o Respirator with Type "H" Ultra-Filters, for extra finely divided particles and for toxic particulate matter
M-S-A Comfo Respirator ecuiosed with type "H" filters
for protection against extra finely Citicefl anc.cr toxic
particulate matter. Approval No. 213-93. 1 to, 71 ............ .......................................each S 6.65
72 to 1<3...................................................each 7.60 1 <4 or more ...............................................each 7.<0
^ r\ r-
A. <! u o o
Subport G--Occupational Health and Environmental Control
1910.93 Air contaminant*. (C.n>n. vapor*, fumes, dust, and mists.)
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 1ST0" 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
)0 10T
r-t .--
A 20 O C*
1030-1
RULES AND REGULATIONS
except for values of mineral dusts listed in Table G-3 o' this sectim, and i2) con centrations r.bcve these specified in Table G-l. G-2. and G-3 of m:s section, shall be avoided, or ;?rct:ctive equipment shall be prc.tdcd and used.
(b) To achieve compliance with para graph ia) of this section, feasible ad ministrative or er.e:neer:r.e controls must first be determined and implemented in all cases. In cases where protective equipment, or protective equipment in addition to c ther 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 C-I
Substance
p.p.m.* mp./M1
Xbilt...........................................
Acetaldehyde........................... Acetic aetd...................................
Acetic anhydride......................... Acuor.f........................................ Acetcr.ttnle...................................
Ac*ty|-ne dichloride, see 1, 2Dich'.crocthylene.....................
Acetrler.e tetrabromide........... Acro'.o:?......................................... Aery l-.mide--Ski-.......................
Acryianitriie--Skrn..................... Aldrir-'ku:............................... Aliy] atcirol--Skin....................... Allyl chloride.............................. *C A'.lylrlycidyl ether (AGE). Allyl ;-;py| dlrulfidr................. 2-AtT.:.-..* thar.nl. see Ethnr.ol-
p.r.iine........................................
2-An:iropvriJ:ne......................... "Ammonia................................. Ammonium suilanatc (Aid-
matt).........................................
ti-Axy' r.crTSfe............................ sec-Amyl scejjte......................... Aniune --ikir...............................
Aniiidi-ie fo. p-ironrrsl--Skin.. An::--.o-.y and cenpo-jnrs
fa-'-'h)....................................... ANT L" (alpha naphthyl
t Incur--:)................................... Ar'errcar.d compounds (a.. As). Arjir-.e........................................... A imp hot-me: hr! -- Fk:e..............
Barium -lolu;,'.-: corr.rc-.mds)...
p-Er p.m-vtinope. see Quir.one.. Benre-yi prror.d*........................ Ber.rvi di'-end-........................... Eit-he-yl. see Diphenvl.............
Bur-hero! A. see Diflycidyl
200
150
1.000 40
1
0.1 10
21 120
as so
..100
135 3
0.Q5
Boron cxiif...................................
Boror. ir:.*>rcmid^........................
1
C Pcron tnf.ucride.....................
l
Brcm::'.'.... ...............................
a)
Brcnir.e pfr.txCuoride.............
ai
Sk:r........................
0.3
Biiti.iicr.-* (1. 3-t-u:2d!trn*>........ 1.000
Butar.f:h:ol. see Butyl sscr-
C-Buiancn?...................................
C*Bufx> rthfino* (Butyl Cel*
loj^lTe} -- sl:n..........................
Burv
tn-butvl oertstc).
sec-Burv. acetate.........................
tert-Iluiyl acetate........................
Butvl afr.'he!...............................
sec*Bu:y; ale*hoJ............ ......... .
tert-Bbr-.l alcchel.......................
C Hu:>
*k;n..................
C ier:*Euty1 ehrcrr.ale (as CrOi'--Skin..............................
n-Bu:vl r.ycidy# ether (BCE)..
But*: rr.ercaf tin....................... p>tc rt-r u?y.:c!u?~.f.....................
200
50 ISO KM 200 100 ISO 100
5
. 50 a3 10
Cs:fiurr.
...............................
"Can:; --: tSyrthetlc)..............
2
C8r**ar>i .aevia *ri...................... _____ .....
Cifl'cn t 'firk............................. .
Carbon
............................ 5. COO
CarU-.n
.................. 50
C h I-.'rJ j r. ** -- S k :r..........................
ChSrr;**oi'.l ear:phene--Skm.... .
C!i> r.ri'C'l UiP-Vuyl ouJe......... Ctd.nr.e..................................... Cb>.f::.i't- :. ........................
.
1 0. 1
C Cl.'.er;:.. trif'.j :,Je................
a1
See Inotnotis nt end of table.
15 300 IS 20 :.400 TO
14 0.25 0.3
4a55 is
3 45 II
35
15 515 650 10
0.5
as
0.3 0.5 0.1 0.2 0.5 ......
5
15 10 3 0.7 c.: '5 2 200
300
240 Tin 950 950 3h0 450 3(0
15
0.1 270
1.5 to
5
3 3.5 9.00) 35 as 0.5 0.5 3 as ' a4
Table G-I--Con.
Table C-I--Con.
Substance
p.p.m.* msJiP *
SatnUnce
p.p.re.4 mgJM*1
C Cli'.ortijreialilchyde..............
i
.(.'h!nra.icrt.-p!ieriano (l'heharylcp.uindc)...................
Chinrob*r:tene traonochlor>
a os
b** >zco*>m..... 75
oCh!orobtnzThftf'it
rr.a:*.na*n:tn!c (0C3M)
ae5
Ch.i 'rofrotnr.niethanc................. 300
I-C mero-'-.d-butadiene. see
Chlareptenc............................. ..
Ch'.nrotlipheryl (41 percent
Chiorirte*--Sktn___________ __
ChlnrodiDhcnvl (54 percent
Chlarinei--akin______ _____ _
l-Chi.->rn.:.}-e?ji>-propane, tea
Er-ichiorhydrin____....___ ...
I-Chloroethanol. see Ethylene
ct-.lcref.yurm......................... .
Chljrocthylcne, see Vinyl
(Sirilil.....................................
C Chloroform (tnchloro-
methane)....................... .
SO
1-Chloro-l-nitropropane.....
a
Chlonopicrin.........................
ai
Chlnroproac d-chloro-1,3-
bctadic.ae)--Skin____ ____
a
Chromium, sol. chromic,
Chromatis sJts as Cr______
Metal and insal. falls________
Coal tar pitch rolatilcs (ben-
lencsnluole fraction) anthra
cene. BaP. pnenamhrene.
acridine, chrysene, pyrene___
Cohan, ninal lumr and dust___
Copper fume....................... ........
1 lusts and Mists...................... .
Cctton dust (raw).......................
Crap S) herbicide..........................
Crcsol (all isomers)--Skin..___
Crotnnald.-hyde..........................
so
Cyanide (as CN)--Skin...............
ioo.........
Cydohesane................................ 300
Cyclohcianol............ ..........
50
SO
5CKI
Cydopentadicne................ ......
7b
1.4-1)...........
onT--Skin.....................................................
3 as 350 0.4 1.C50
1 as
340 100
0.7 90
al s
ai at
al i l
15
245 5
1.050 COO 200
1,015 200 10 i
DlmethTlrultite--Skin..............
l
DlnUrubrntrne (all isomen)--
Skin........................ I.............................
Diniiro-o-cresol--Skin....................................
Dinnroto!jene -S k tn.....................................
Dioxane iDicthylene dioaide)--
Diphenyl............. ............. ..
a2
Diphenyl amine........................ .....................
Diph-nrt--ethane dilsocyanata
(see Methylene btsphenyl
tsoeyanate (MDl)...................... .
Dipropyien* flycol methyl
ether--Skin...;................... . Dt-sce. octyi phthalate (1)1-1-
100
etliylhecylphthalaie)...............
Endosullia (Tbiodan )--
Skin............ ........................ .
Endrln--Skm....................... .......
r.pichlerhydnn --Skin
EPN-akm......................... .........
l.I-Epotypropane. sea
Propylen-oiide.......... ...........
1.3- F. pory-l-propanol. lee
Glycidol................. ...................
Ethanetlilel. see Ethylmer-
captan.......................................
Ethanolarr.ine................ .............
3
2-Ethocyethanol--skin.............. 100
I-Ethoiyrthylaeetaie (Cello-
sole* acetate)--Skin................ 100
Ethyl acetate............................... 400
Ethyl acrylate--Skin................. Ethyl alcouol (ethanol)...........
l.ouiso
Eihylannr.e........................... .
10
Ethyl src-jm.yl ketone (5-
methyl-3-hptanone)..............
IS
Ethyl b-nrenc............................ 100
Ethyl bromide............................ 300
Ethyl butyl ketone (3-
Hcpiunone)...........
50
Ethyl ehlcriJe........................... 1.000
400
Ethyl formate.............................. * 100
Ethyl mercaptan................ ........
as
Ethyl sill:-.:*............ .................. 100
. EthvW*nc cMorohydnn--Skin..
3
Elhylerertramine........................
10
Ethylene dihromi-le. see 1,2-
Dibromo^thane..........................
1
I a L,
360 ) 10
eoo
*
ai ai 19 as
6
>40
540 1,400
100
1.00U0
130 435 90
130 3. eoo 1.300
300 1
50 16 25
Decaborane--Skin......................
0.05
0.3
DrRH'ton S'- -Sk:n...........................................
ai
Didceione alcotroi (4-hvdroiy-
4-mrtliv',.j.pc:-.:ur:one)............ 50
240
l.r*di3Tmno''!hyne. Sec
Ethyleredunune...........................................
Diaromrthane.............................
as
Dibcrane......................................
ai
ai
Dibutvl phosphate.....................
1
3
rHhutvj'.iitruLitf......................... ______
5
*C Dicluoroicctylcne...............
ai
0.4
C ol)ich!croii<T.scn.................. 33
300
p*l Mrhlor.v.scmene..-................. 75
430
Uichlorodifluoromethanf........... 1,0)0
4.950
1.3-1) ich lorod .S-dimethyl
a:
ll*l>ichIo:ot;ihar\e................... 100
400
].2-T>iehlo:oPihv!cne................ 200
TOO
C Didiloro thyl ether--Skin...
15
90
Dieliicronif thant*. see
Mcihylcneeblori-J*.................... . ..............
T)ic!iloro:::nnuflufronu*th2ne... 1.000
4,200
C l.l*I>ieMnro-!*n:irc*ibanf....
10
CO
].2-l)lfhlcropropine. see
rropvionfu:e;;ioriQr........... ....______ ....__...
Diehloroiftranon'cn'ibane......... 1.000
7,000
Dichlorces (i)DVl')--Skrn.........
I
a 23
Dwthylanune.............................. 23
74
DirtJivlarr.mo etbanol--Sksr....
13
50
*C Dihiin laic ir:a:n;ne--5kir.. D^tlivU thi'r. 5^: Ethvi ether...
10 42 .. . . . _____ _
Difluoro5iAroTnon:cinane.......... C Iliclycidyl ether (UCE).
10a0 s
SO) XI
Uihydrntybentcr.e. set
llydrocumonc......................
Dnsobutyl ketone....................... 50
no
Iliio;iropy!unur.e--Skin--........
5
30
Unntr.ocyinctlune. see
M. thyljl....................................
Dimethyl aettaratde--Skin.......
10
35
l'nnv thvi mum-..........................
10
IS
Din-.i-thy iammobensenr, see
.\ylnler.e..................................
Pimthy:ani!inc(N-dinifthyP
aniline) --Skin..........................
Dimrte.y'.U-rrrnt. see Xylene..
Dimethyl l._,iliSro:no-'.V."-di-
chl.rrnrthyl phcsph.tr.
.lliurjnu..................................
3
Dimethylirrinarmdc--Skm.......
10
30
2.6- I inr.ei hr tti.-pumme. see
DiUol-ulyt krtoii-.............
1.1-I lime: he;!:>-Irirmc -- Skin... "d'i`
Dimrthytpiill.ulj'.e.................... .
A <:
Dif!>lorthfinf............................
C Ethyli-r* clvcoi dnttratc onrt.'or N:trnclvecr;i;--Skn...
Ethykr.'. clycol t.-.onnmcihyl
ttiicr acetate, sc: Methyl eellcfoK* aectntf.........................
Etr.yh-ne irr.'.ne--Sktn................ Ethylencoc.de............................ Elhy'.idmc rhlorldc. see 1.1-
Pichloroethane.
N-Et`.\y'.morpholine--Skin--...
*a:
a5 50 20
Ferroranadium dusi................
Fluoride (as F)..............................
Fluorine.......................................
0.1
1.000
5 5
Furfury! alcohol..........................
50
Glycidol (I.VEpoiy-1propanol!..................................
Glycol momeir.yl ether, see
50
2-Et how*t Hanoi......................
CutiuDu. X Ar.nphos*
methyl......................................
Halnium......................................
Jleptaehlor--Skin.......................
HtPtar.r
..................
HrwHiorr
-Skin....
500
1
IlrsachlOfGnaj'himlene--Skin..
lUxan* in.ketane)...................... 2*IIexanoii*..................................
300 100
Heioite (Methyl lsobutyl
ketone)......................................
SffUtiyl ireta'.t.......................* Hydrastne--SWn........................ Hydroccn bromide.....................
C Hydrocen ch'.onde.................
Hyrtroceti cyanic--Skill........... Hydrogen parotide..................... ll>dTp*vn viemde......... .
15000 331 10 01.05
)l)drct;uinsne............................. . In'Unt........................................ Indium tut compounds, as lu..
C Jodme....................................... Iron oilde furr.f.................. .
io 0.1
iron salts. stiuMf, Ft............
jjoar.iytrelate...........................
]>onmyyl1
.......................................
Isol'Uty\ ai.cticl.......................... Isophorort........... ................. .
isopropyl artiatt.........................
I?*r:pyl
........................
^i>Oprupyl.miue...........................
100 24>1140250n05000o
5
uo
..................
1 90
13 1 0. 5.600 0 20 200 ISO
as o.s
1,000 10
1.64010a0 i 340100 101.3 171L4 45aa2 ij 101 x37!10042o0001S n>a0o 13
Tab ix G-I--Coa.
* Sotsnr.
p.p.m.* CiSJM' *
RULES AND REGULATIONS Tabu: G-I--Con.
Substi-nee
p.p.m.* rry.'M*
Tab lx G-I--Coo.
Sataunet
p.p.m.*
10505
!s:prepy!:r.cr.......... ................. sm
l.'trf-T'.- ' tvr.dyl ct: crflGE). 40
.................
as
........... .
2Jftti3r.e--b*:n....... ....................................
L::h;un *yunc*.......
L.P.'J. i-iuulcc
pis)*
1.000
Msmesium ottiHune.
Jlalel: a.-JiyCrtde___1................ C llar.paaese aad cocpcunds.
a 2:
Jlesityl rtldc.............................. Utthaneratol. see Methyl
a
Methoxyehlor....... ................ ........ ...............
S-MetbovyethanoL see Methyl
ctUoive....................................
Methyl acetate............................ 200
Methyl acetylene iprep.'f.t!----- LOGO
Methyl actylere-rropadiene
cUilur? OlAPi'i....... -......... LOGO
Methyl acr.^t.-ct::i...............
10
Methyial'd:~.Lt;. jv-irthar.e).. l, (*
Methyl al.omsl i.r.ethancdj____ 2*0
2.100 240 ap 0.15 as a 024
1.100
16 14 1
4 100
14
10 1,640
L800 36
3,100 200
Methyl a--,v| alcc-.al. ce
ilelfcyl liScuty: curi'ir.o!.......... ................... ___ ______
Methyl ts'umyl tetjr.c----- .... 100
476
Methyl (n-amyt) ictone (2-
Heptar.ar.c).............................. 100
4G4
C Mclliy! srn;r:i*iv--Skin..........
20
40
Methyl bu:yl
see 2*
H?tanr.c.....................................
Methyl ce"'\v)lvc--Skin............. 25
80
Mclhyi ff IaV*Ivc saute--Skui
25
1X1
Methyl eh..;crr,rm...................... 350
1.000
Mfahylcyciciiri-:.......................
2,<*'Y)
Mc!h)i`:\c:5K*\A:V:!.................... 1*0
470
ICO . 460
Mcihyl tn.yf k?:o:;c (MK).
Methyl (.mute........................... 100
S'.rfhyl iv;: `.;-c; ;r,..................
5
.M*:hylL'*^',.::vl i::-:::*! -- r*k:n. 25
Mf:b>! U'iuusyl k-.;c.i-, ice
Heion*
M'thjl isocyanate--Skin...........
0.02
r.tircar^ar.....................
0.6
Methyl nc:r.a-r>;.t.................. 100
ilcihy) propyl k't c.c. ':
Pr.:sr.s:i*.....................................
C M'thy! .*;.:ra:c......................
6
C Methyl 5iyre:\*.......,,........... 100
C Methyl*::.! b,.pr r.yl
isocyanate
....................
0.02
3l!yl>cl?r.u::::
Soluble cun*.pouv.i......................
Insoluble con*.:
...................
Monorncthyl 2:-.'. ::.c - >k:r.........
C Mono.T.ciliyJ !:vira:;r.e--
Skin..........................................
0.2
Msrphclir.c-Skiu......................
00
Naphtha (csal:;--)...................... 100
Naphtha if r*.p................. ...........
10
Ntrkcl carVonyl.............. .
0.001
N::kcl, su*.:jI and soluble
mpl. at Ni.............. .................
Nicotine -- akin.............. ............ ..
Nitric arid..................................
Nunc ox: It .....
p*Nnrca:-..
Nitrol/f
-- $a,
i i
Nitroclhar.e........................
Nitrc?cn d;*xil-................ Njinvcn tn.Ijor..:.-........... Ni::cwyr*'n:i--
5 10
0.2
Njtrume'har.e..................... l*Nitroprrr jnc............ ..
25
2`Niuorrr; me............... Nitrot-lucr-: -- ^ k :.*i............ Nirrotrr. h.'roructl'aue, see
Chlnri.p,v:i:i ................................
4
Oct>',hloco:;apL;!.i,c::e--ekm....... * firlane........................................ 400 Oil r/.Ljt. r-rtimiatc...................... <>5rriur.i t'truiide............................
Otihc a :-*........................................
Oiypou d::lufnde....................... blMi.f...........................................
Parana*-:`kin*
'.***...
,"`'rr. iiT.j...l..:..!*.!.*.v.lu.l..K..c.u.m..*....
0 05 0.1
ffrhum f.uwmjci (.vie (|i'>b --
ksu..................... ................
^*fchum hy<lroerlr...........................
^ibine..............
M
%>iuM.ii(l 9.u.U.%...n..t....................................... 2UI
Sulfur
!' S
Sulfur |.t i.i^uci ....... ............ 1 oou
footnoti's at uul of table.
250 2S 100
0.06 1 410
00 4SO
0.2
&
15 0
0.36 70 4"J 60 0.007
1 0.5 6 30 6 5 1 310 9 29 2 260 90 00 30
0.1 1,900
6 0.002 1
ai
0.2
as
a 01
a 05
5.4 1, IM
0 14 W &.COJ
Sulfurt; ;ld................... . Sulfur mtr.Khlcndt.........
........
Systoi. see Lcmeton _
Tantalum.
TF.PP--iWift...................................
Tellurium........................................
........Tti'.unun htiaAuondc..............
ac:
TEPP-$kln....................................
C Terpheryls... .......................
l.U.C-TtiraciilorO'^-dtftuoro*
ethane................................. .. 500
U^.C-Temchloro-U-difiuoro*
ethane...................................... 500
l.l,2.2*Tt;racliloroeihane--Skin
5
Teirachloroethyient, set Per*
ehlnrorthylenf.................... ..........
Trtfachlororr.cihant. see Carbon
tetraehlande..................................
Tetrichioronjphthai^ne--Skin....
Tetraethyl lead (as Pb) --ikm....
Te:mhydrefuran....... ................ 200
Tetrameihyl lead (as Pb)--
Skin...................................
Tetrameihyl succinonitrile--
Skin............. ............................
a6
Teirnnitremethane.....................
i
Tetryl U.4.'-tr:nitropheny)-
1 0.34 20
10 5 as
ai as a 06
<170
<170 36
3
/fl.100
430
/a 140 1
1
Ttlnethyl hetuent.................
s
3,4.4-Tnrjtropflenol. jrc Picric
uil.......................................... .
3.4.6-Trin:trophcnyl.>ncthyl-
mtramir.c. j.c Te::yL...________ ________
Trimtrotcxcnc--iiin____ ___________ .....
Trtorthomyl phosvmie.............................
Triphenyl pnospiu:,......
Tanmeu and compaundi. u
IV;
Soluble____ ....____ ____________________
Insoluble___ .................
Turpentine..................
100
Cranium (natural) soL and
Insol. compounds as V.......
C Vanadium:
VjOs dust.......................................................
ViOs lumc................................. ................ Vinyl ucniene. see StjTcne.............................
*`C Vinyl ehlonde._..................
400
Vinylcyanide. see Acrylonitrile___________...
Vinyl toluene...............................
100
Warfarin........................................................ .. *
Xylene dylnl)________________
100
Xylidine--5km.................
4
Yttrium_______ _______ ______ ___________
Zinc chloride tume____________ _______ ____
Zinc oxide fume................................ .
Zirconium compounds (as Zr)......................
120
1.4 0.1 3
1 4 460
0.2
0.4 0.1
1.330
440
ai
434 24
1 1 4 4
jnfthyjr.itraniine)--Skin..............
L4
Thalhun; (soluble com* pounds)--Skin as Tl....................
0.1 IDTOAdditiou.
Tlurem..............................................
4 Parts ol vapor or pas per million parts ct cantami-
Tla (morr^nic empds, except
Snlli and SnO:>............................ ____________
Tin (eraar.ic cmnds).........................
C Toiuc`ne'2.4*dnsoryanaie........
0.02
o-ToluHiite-- Skin.......... ............
4
2 ai au
22
pated air by volume a: .'4' C. and Tv ) mm. lie pressure.
1 Approximate milli.Tjins ol particulate pvt cuoic meter ol air.
(No (ootnotc "c" is used to avoid confusion with
eeilinc value notations.)
Toi-phc:ic, sec Chlorinated
< An atmospheric concentration o[ not more than
canpiu-n*.......................... .........
0.03 p.p.m., or personal prvtcctzon may Uc nc.ctsary
Tri`*utyi phosptmte..........................
to avoid headache.
l,l.l*TricMnro*'thaue see-
M**!*ivi cbii'roicrm............... ......... ......................... . ________ .
l.l.?*Tnchiori> thane--Skin..... 10
45
Paraiiiioii-Skin................................
ai
As sampled method that does not collect vapor. /1 or rontrol of Ceiicral roam air. btolocic monitoring
Is essential for personnel control.
PcrJaboranc................................
Pentachlrroniphtha^ene--Skin.
Pentachlcrcpnenol--Skin............ 'Pentane...................................... 2*rcntancne............ ,,..................
"6.'6o5`
600 200
aoi as
0.6 1,600
700
Tabu G-2
3-hour rime
weighted
average
Pcrchlororc*thyl mercaptan....
PercMoryl fluoride...................... Phenol--Skin............................... [I'iienyirnc diamine--Skin...........
Phenyl ether (vapor)..................
0.1 3 6
0.8 Benzene (Z37.4-1SG9)........ . 10 p.pda.
13.6 19 ai
Beryllium and beryllium compounds (Z37.29-1S70). 0.002 stg./M*.
Cadmium dust (as Cd)
Phenyl eihcr-btphcnyl
(Z37.5-1S70)....................... 0.2 mg./M>.
mixture (Tapur;....................... Phcnylct)iyl<-nr. Styrene....... Phcnyi r!yc:dyl ether (POD... Pher.yihydrarsne -- skin.............
10 6
Cadmium tumc (as Cd) to (Z37.5-1970) ...................... 0.1m;.,M:. 22 Carbon disulfide (Z373-
plu\drin (Mcvtuphos gfi )--
Ss-in........................................ .. Ph??*ne 'carbonyl chloride)... Phosphine....................................
Phosphoric acid............................... Phosphorus (yellow'........................ Phosphorus tctujc!i!*ndf.............. Phosphorus prma.vj.ndc................. Phosphorus irirtitnridc...............
0.1 a3
0.6 2
19G8) ................................... 20 p.p.m.
ai a4 0.4
Carbon tetrachloride (Z37.17-19C7) .................... 10 p.p.m.
1 Ethylene dibromlde
ai (Z37.31-1970) .................... 20 p.pxi.
1 1 3
Ethylene dlchloride (Z37.21-1SC9) ................. SO p.p.m.
1a2 t
Formaldchvde (Z37.1G--1967) ....______ 3 p.pdn.
Rival jrwMhcjlyl-l.JThUnum (Soluble Soils) us
Pl.................................................
01
Hyd.Jgen Suorlde (Z37.26-19C0)
a 002 Fluoride as dust
3 p.psn.
Rrofarryl alcohol- itin............ n-l'iocyl areiatc..........................
Piopyl-nc didilori'lc.................. Propylene ;::ut.e-Skin..............
1
200 200 26 76
2
840
600 110
(Z37.2S-19CS) ___________ 2J Lead and Its inorganic com
pounds (Z37.11-1963).... 0.2 mg., M;.
340 Methvl chloride
5 (Z37.18-19C3) ___________ 100 p.p.m..
100
Ptopyiw, see .Metii>Urviylruc........
Pjrot brunt.......................................
Pyridine.......................................
4
140 Melhvlette chloride 4 (Z37.23-19G9) .................... SOO p.p.m. 14 Organo (alkvl) mercury
Qu:r'om'.................... ..............
0.1
01 (Z37.30-19691 ................... 0.01 m;. M\
UM.V-Si;m......................... ...........
R Viliut:t.
lumc ond
duiU. i' Kli............................
SwUltli! nils..................................
L4 Styrene (Z37.13-1S69)...--- lOO p.p.m.
00.10)1
Tctraehlorocthvlcne (Z37.2I-19G7) ...................
ICO p.p.m.
Rci:ncl............................................ .
10 Toluene (Z37.12-1957).......... 200 p.p.m.
Kulcnonc (ci>::inirr.*i.in............... . S?r)..........
4
0.:
Acceptable
Si'!o:mim l.r\.i:Vjiir;di`................
0.04
0.4
cciltip
Tiiihh'runi(:!uiM\ 5 Clilorrv
I' r:n...............................................
T/iriilPrn-.rii'liltijI'-nc -- ^kiti..........
t.'J.JTru
................
60
concentration Hvdrogen sulfide 300 (Z37.2-19CG) ..................... 20 p.p Jn.
l.l.'J-Tfn'hlL'ro l.-.- lnllui-iorlli.nii-................................ .
Trirlli) U .line.............................
Tiilluitrgnwitubi'umoiiiritiniii'...
1,000 26
l.OA)
7,ron M(X)
Chromic acid nnd chrontntes (Z37.3-1971) ___ a............. 1 nig./ 19M'.
. Mercury (Z37.8-1971)............ 1 mg./5C.\i\
A 2035 7
10506
Taile G-3-Mrvt*.iL Dcsn
Pubstanet
Mppcf Mg/M1
Enin:
Crystalline:
QuarU (respirable)...___ _
30 lOmc'M* -
CiSiOr+5 3SIO:-(-2 Quart* (total dust).........
Cristobalite: UjeVjthe
value calculated Iron the count or mass iormuiae lor
quant. Trinynitc: Use H the tsIuc
calculated Ircm the (or-
mulac for quartz. Amorphous. includin? natural
diatoinaccous earth
%S10r+: 20 0mp.'M>
Tremollte........................... .....
GSiOj 5 SOmg.'M1
Eillcatei (less than 1% eryj-
lalitiic silica):
> Asbestos--12 libers per
milliliter greater than 5
microns in length * or____
2
Mica.................... .................
20
Soapstone..............................
20
Talc........................................
20
Portland cement...........
50
Graphite (natural)..................
IS
Coal dust <re=pT3b'.e fraction
less than i7c SiO:)________ ...................
Tor mart than SIOs........... ...................
TeSiOi
2.4mg,'M or
lOmf/Mt
Inert or Nuisance Dost: Respirable fraction.............. Total dust.............................
%sio>+:
15 Smg'M5 50 ISnig/.M1
Noth: Conversion factors-- mppcfXJS.3miil:o:i parv.cics per cubic meter
particles per c.c. MiUiO'.is of part jell's p-r cul :: foot of air. based on
lmp:::c^r arr.j>Scs counted bv !:: nt-ficld technics. 1 Th- pcricua-'c nl crvstii.i i.c silica in the formula
is the amount *trr:sisi.jd Jr *n airAsorue samples, except l:i those in*ta irc> v.i wp:icl: other methods have
been snv.vn in he applicable. As determined i*v the rr.tv:inrane filter method at
133 X P'i^sc cor.iras: mai'i'i.'i-a:;;on. Tiotlt roiiccntr2tiv,:i and percent quartz fer the
ppUe.viun of this lirr.tr aie to be determined from the fraction passing a site-selector with the following.
eliaractcris'.ics:
Aerodynamic diameter (unit density sphere)
Ferrent passing selector
3 90 15 75 1.5 so 5.0 25 10 0
The Tnour#m?ni} under thj r.ntr refer to the use of
n AtC instrument. If the rfr:r.ii|f fraction of coal
dust Is di'tormin'il with a MKL ::i* luurceorrrspoudine
to that of j.4
the table fur coal dust Is 4.5 Mg/M1
A U or. r. r*