Document M4b3061VJoaNeb3Yw1vv08Erz

0) res D TO Substance Thallium (solL<Dte compounds! Skin Thiram Tin (inorganic empds. except oxides Tin (organic cmpdsi Titanium dioxide Toluene (toluol) C Toluene-2.4-dusocyanaie o-Toiuidine Skin Toxaptiene. see Chlorinated camphene 1.1,1-Trichloroethane, see Methyl chloro form Trichloroethylene Tttchlotomelhane. see Chloroform Trichloioiiaphttutene - Skin 1,2. 3 Tlichloiopiopane 1,1.2 Trichloio 1.2.2-lnfluoroethane Triethylamme Tn fluoiomonobiomomethane 2.4.6 Titmltophenol see Picnc acid 2.4.6-T<*nitiophenylniettiy)nitramine. see Tettyl . . Tnnilfotoluene - Skin Ttiorthociesyl phosphate Tnphenyl phosphate Turpentine Utantuin (soluble compounds) (insoluble compounds) C Vanadium (V2O s dust) . .. (VX)o fume) Vinyl benzene, see Styiene C Vinyt chloiide Vinylcyantde, see Aciylomtiile Vinyl toluene Warfarin .......... | Xylene (xylol) Xylidine - Skin .. + Yttrium ........ Zinc oxide fume Zirconium compounds (as Zi) ppm* Mg - - 200 0 02 5 C 5 2 J. 25 750 0 22 100 535 50 1.000 25 1.000 S 300 ?. 000 100 6, 100 -1 0. -3 100 560 - 0. - 0. 0. ~ 0. 500 1. 300 100 480 - 0. -5 25 -1 -5 -5 Radioactivity: For jt'.-rrmssilile com entcatuns `f radio isotopes u air, sc' II S. Department <l Coiitiitt'n-t*. National Bureau *f Standards, Handbook W. "Maximum Permissibl% I tody Burdens -mil Maximum Permissible Concentrations o( Kudit'iun'lides in Air and in Water for Occupational txp>sure, ** June S. 1*159. Also sit t). S Department of Commerce National Bureau of Standards Handbook S`J, "Permissible Dose from Kxtcrnal Sources of lontzin* Radiation, ** September 24. |yf4. and adden dum of April 15. * Port* of vopor or qoi pt million port* of air plut vapor by volume ut JS'C and 760 mm. Hj pirn ** Approximate niilligninu of parficwlofo per cubic motor of oir. A Humber*. S*e AppvnJi* A * Srv Tfiitjntf I.nuns RESPIRABLE DUSTS EVALUATED BY COUNT Substance cn. p. p. c. f. * SILICA Crystalline tyartz, Thiesltold Limit calculated 60m the formula.................. Cristobalite " " Amorphous, including natural " diatomaceous earth................. . . 250 ** "oSiO> 5 ~ 20 SILICATES (less than crystalline silica) Asbestos ................................. Mica......................................... . .. 5 20 Soapstone................................. 20 Talc......................................... ....... 20 Portland Cement....................... ........ 50 GRAPHITE (natural) IS "Inert" or Nuisance Particulates SO (or IS mg m3 see Appendix D whichever is the smaller) Conversion factor* mppcf * 35-3 = million particles pet cubic meter = particles pet c.c. * Millions of poftlclos por cubic foot of oir, boced on mpingor temples counted by Lgh-(tefd technics. ** Tbo percentage of crystalline silica in the formuto is tfio amount determined from oir-bome samples, except In those instances in wdiicb other me died* hove been shewn to be applicable. TENTATIVE VALUES These substances, with theii corresponding tentative limits, compiise those foi which a limit has been assigned foi the first time or for which a change in the `Recommended* listing has been made. In both cases, Ore assigned limits should be considered trial values that will remain in the ten tative listing for a period of at least two years, during which time definitive evidence and experience is sought. If accept able at the end of two years, these substances aid values will be moved to the RECOMMENDED list. Documentation for tentative values are available lor each of these substan ces. Substance PPn* M9 M Acrylamide - Skin 2*Ammopyndme sec-Amy! acetate Azinpho s~methy1*Sk 1n Bromoform-Skin ... n-Butyl acetate sec-Butyl acetate tert-Butyl acetate ++ set-Butyl alcohol Cadmium (Metal dust and soluble salts) Carbon black . . Carbon monoxide ... t a-Chloioacetophenone (phenacylchlorrde) o-Chlorobenzyltdene malonomtitle (OCBM) C Chlorine .... 11 Chromium, sol. chromic, chromous salts. as Cr................................................... Metallic & insol. sails . Coat tai pitch volatiles (benzene soluble fraction) (anthracene, BaP, phenanthrene, acridine, chrysene, pyrene) . . . ++ Cobalt, Metal fume & dust . Crotonaldehyde ................... Cumene - Skin .... Cyclohexane Cyclohexene ...... Oiazomethane... C 1.2-Oituomo-ethane-Skin .. * Dibutyl phosphate .... * Oibutylphthalate Oiethylamino ethanol-Skin . re Oiisspiopylamine-Skin . _ 0.3 0.5 2 125 650 - 0.2 0.5 5 ISO. 710. 200 050 200. 950. 150. 450. - 0.2 - 3.5 50. 55. 0.05 0.3 .05 0.4 l. 3. _ 0.5 _ 1. - 0.2 _ 0.1 2. 6. 50. 245. 300. 1,,050. 300. 1,015. 0.2 0.4 25. 190. 1. 5. 5. 10. 50. 5. 20. " Ports of vapor a. 90s por mlllioo port, ol oi, plur vapor bp volume of 2PC ond 760 run. Kg ptritutt " Appvo.imato mrlliproms ol particulolo pot cub.c malar of air. I 1966 Revision + + 1966 Additions 03122225