Document EeKXoo3bMXMMDdL1YjE4rGv4

1191 Substance 2-diffuoroethane 1, 1, 2, 2-Tetrechloroethane--Skin Tetrachloroethylene, see Perchloroethytene Tetrachloromethane, see Carbon tetrachloride Tetrachloronaphthalene--Skin Tetraethyl lead (as Pb)--Skin Tetrahydrofuran Tetremethyl lead (as Pb)--Skin Tetramethyl succinomtnle--Skin Tetranitromethane Tetryl (2, 4, 6-trmitrophenyf- melhylmtramlne)--Skin Thallium (soluble compounds)-- Skin (as Ti) Thiram Tin (Inorganic compounds, except SnH and SnO>) as Sn Tin (organic compounds)--Skin (as Sn) Tin oxide Titanium dioxide * Toluene (toluol) C Toluene-2, 4-dilsocyanate o-Tolmdine Toxaphene, see Chlorinated camphene Tnbutyl phosphate 1, 1, 1-Trichforoethane, see Methyl chloroform 1,1, 2-Tnchloroethane--Skin Trichloroethylene Trichloromethane, see Chloroform Trichioronaphthalene--Skin 1, 2, 3-Trichloropropane 1,1, 2-Trlchloro 1, 2, 2-tnfluoroelhane Triethylamine Trifluoromonobromomethane Trlmethyl benzene 2, 4, 6-Trtmtrophenol, see Picric acid 2, 4, 6-Trinitrophenylmethylmtramlne, see Tetryl Trin itrotoluene--Skin Trlorthocresyl phosphate Trlpheny! phosphate Tungsten and Compounds, as W ppm* mg/cu m` 500 4,170 S 35 " - - - 200 05 1 - 2 0100 590 0150 3 8 - * - . 100 0 02 5 15 01 5 2 01 E E 375 014 22 - 5 - 10 100 - - 50 1,000 25 1,000 25 * - 45 535 - 5 300 7,600 100 6,100 120 - 02 1 5 - 01 "3 Soluble Insoluble Turpentine Uranium (natural) soluble and insoluble compounds, as U Vanadium (V9Os), as V Oust C Fume Vinyl acetate Vinyl benzene, see Styrene Vinyl bromide Vinyl chloride Vinylcyanide, see Acrylonitrile Vinyl toluene Warfarin Wood dust (nonaflergemc) Xylene (xylol) . Xylldlne--Skin Yttnum Zinc chloride fume Zinc oxide fume Zirconium compounds (as Zr) 100 10 250 200 100 100 5 1 5 560 02 05 005 30 1,100 510 480 01 5 435 25 1 1 5 5 * Parts of vapor or gas per million parts of contaminated air by volume at 25 C and 760 mm Hg pressure 6 Approximate milligrams of substance per cubic meter of air 4 An atmospheric concentration of not more than 002 ppm, or personal protection may be necessary to avoid headache * < 5-7 pm in diameter * As sampled by method that does not collect vapor According to analytically determined composition h For control of general room air, biologic monitoring is essential for personal control Capital letters refer to Appendices 1973 Addition 09 See "Notice of Intended Changes " Radioactivity For permissible concentrations of radioisotopes In air, see U S Department of Commerce, National Bureau of Stand ards Handbook 69, "Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and in Water for Occupational Exposure," June 5, 1969 Also, see U S Department of Commerce. National Bureau of Standards Handbook 59, "Permissible Dose from External Sources of Ionizing Radiation," September 24, 1954, and addendum of April 15, 1958 A report, Basic Radiation Protection Criteria, published by the National Committee on Radiation Protection, revises and modernizes the concept of the NCRP standards of 1954, 1957, and 1958, obtainable as NCRP Rept No 39, P O Box 4867, Washing ton, D C 20008