Kehoe, we conclude that tetram ethyl lead and tetraethyl lead (T E L ) a re no different fro m the standpoint of th e ir possib le effects on the' public health.

Suffice it to say, however, that it has been known for more than twenty years that there is no change in the urine Coproporphyrin in response to the absorption of tetraethyl lead, even in fatal poisoning.

It was not to be inferred that tetramethyl lead would replacq tetraethyl lead but rather that either or both would be used for addition to motor gasoline as might prove economic.

It was not to be inferred that tetramethyl lead would replacq tetraethyl lead but rather that either or both would be used for addition to motor gasoline as might prove economic.

Phaapharua (yellow) PHaapHarua pentachlerlde Phaapharua pentatulflde Picric acid Pytethruai Rotenene Salaniwai caopounda (aa Sa) Sodium fluaroocatato (1010) SMluia hydrealdc ' StrycHnlaa Sulfuric acid TE0P (tetraethyl dlthianepyrw* phaapHaia) TEPP (tetraethyl pyrapHaaphata) Talluriuai Tarry!

His work in this field began In the. very early days of mass manufacture of automobiles wlih the purpose of achieving safely and high health standards in the manufacture and use of tetraethyl lead for gasoline, The excellent, record mjilntnined In this area an he traced largely lo work performed by Dr.

Chronic Toxicity Acrylamide Aldrin 2-Amino pyridine Antimony ANTU Arsenic Barium, soluble Benzene Cadmium, soluble and dust Cadmium fume Calcium arsenate Carbon disulfide Carbon tetrachloride Chlordane Chlorinated camphene Chlorodiphenyl 42$ Cl Chlorodiphenyl 54$ Cl Chlorodiphenyl oxide Chloroform Chromium, metal and soluble chrcmous, chromic salts Cobalt Copper, dust, mist Copper fume Crag herbicide 2,4-D DDT 1.1-Di chioroethane 1.2-Dichloroethane Dieldrln Dimethyl acetamide Dimethyl formamide Dicxane Endrin Hafnium Heptachlor 72 TLV's Hexachloroethane Hexachloronaphthalene Hydrogen selenide Hydroquinone Lead Lead arsenate Lindane Manganese Mercury Mercury, organic Methoxychlor Methyl bromide Molybdenum, insoluble Molybdenum, soluble Nickel, metal and soluble Octachloronaphthalene Pentachloronaphthalene Phenyl hydrazine Phosphorous, yellow Propylene dichloride Pyridine Quinone Selenium 2,4,5-T Tellurium Tet rachloroethane Tet rachloronaphthalene Tetraethyl lead Tetramethyl lead Thallium Tin, organic 1,1,2-Trichloroethane Trichloronaphthalene Trichloropropane Triorthocresyl phosphate Uranium Yttrium OLI 2632 List E* Cancer - Asbestos Benzidine Be ryIlium Coal tar pitch volatiles Chromates, insoluble 2-Naphthylaraine Nickel carbonyl Nit ros odimethylamine beta-Propiolact one F.

(ammonium aulfamata) 15 Antimony 0.5 ANTU (alpba-naphthyl-thiourea) 0.3 Araanic 0.5 Barium (aolubla compounda) 0.5 Beryllium 0. 002 Cadmium oxide fume 0.1 Calcium araanata 0.1 Chlordane (1,2,4, 5, 6,7, 8, 8-octa- chloro-3a, 4, 7, 7e-tetra-hydr-4, 7 -m cthanoindane) 2 Chlorinated camphene, 60% 0.5 Chlorinated diphenyl oxide 0.5 Chlorodlphenyl (42% chlorine) - akin 1 Chlorodiphenyl (54% chlorine) - akin 0.5 Chromic acid and chromatea (aa CrO,) 0.1 Crag herbicide (sodium 2-(2, 4-dichloro- phenoxy) ethanol hydrogen eulfate) 15 Cyanide (aa CN) - akin 5 2,4-D (2,4-dicklorophenoxyacetlc acid) 10 DDT (2.2-bia (p-chloropbenyl)-l, 1,1- trichloroethane) 1 Dieldrin (1,2, 3,4,10,10-hexachloro-6, 7-epoxy-1,4,4a,5,6,7,8,8a-octahydro - 1 ,-4, 5, 8-dimethanonapbthalene) - akin 0.25 Dinitrobensena akin 1 Dinitrotoluene - akin 1.5 Oinitro-o-creaol - akin 0.2 CPN (O-athyl O-p-nitropbanyl thiono- bcnxenephoaphonate) - akin 0.5 Farbam (ferric dimethyl dithlocarbamale) IS Ferrovanadium duat 1 Fluoride 2.5 Hydroquinone 2 Iron oxide fume Lead 15 0.2 Lead araenata 0.15 Lindane (hexachloroeydohexane, gamma iaomar) Lithium hydride Magnaaium oxide fume Malathion (O, O-dimethyl dithiophoephata 0.5 0.025 15 of diethyl mercaptoauccinate) - akin IS Manganeee 5.

IS Sulfuric acid 1 TEDP (tetraethyl dithio'nopyro- phosphate)- skin 0.2 TEPP (tetraethyl pyrophosphate) - skin 0.05 Tellurium 0.1 Tetryl (2,4, 6-trinltrophenylmethyl- nitramine) - skin 1.5 Thallium (soluble compounds) 0.1 Thiram (tetrarnethyl thiuram disulfide) . 5.

IS Sulfuric acid 1 TEDP (tetraethyl dithio'nopyro- phosphate)- skin 0.2 TEPP (tetraethyl pyrophosphate) - skin 0.05 Tellurium 0.1 Tetryl (2,4, 6-trinltrophenylmethyl- nitramine) - skin 1.5 Thallium (soluble compounds) 0.1 Thiram (tetrarnethyl thiuram disulfide) . 5.

(ammonium aulfamata) 15 Antimony 0.5 ANTU (alpba-naphthyl-thiourea) 0.3 Araanic 0.5 Barium (aolubla compounda) 0.5 Beryllium 0. 002 Cadmium oxide fume 0.1 Calcium araanata 0.1 Chlordane (1,2,4, 5, 6,7, 8, 8-octa- chloro-3a, 4, 7, 7e-tetra-hydr-4, 7 -m cthanoindane) 2 Chlorinated camphene, 60% 0.5 Chlorinated diphenyl oxide 0.5 Chlorodlphenyl (42% chlorine) - akin 1 Chlorodiphanyl (54% chlorine) - akin 0.5 Chromic acid and chromatea (aa CrO,) 0.1 Crag herbicide (sodium 2-(2, 4-dichloro- phenoxy) ethanol hydrogen eulfate) 15 Cyanide (aa CN) - akin 5 2,4-D (2,4-dicklorophenoxyacetlc acid) 10 DDT (2.2-bia (p-chloropbenyl)-l, 1,1- trichloroethane) 1 Dieldrin (1,2, 3,4,10,10-hexachloro-6, 7-epoxy-1,4,4a,5,6,7,8,8a-octahydro - ` 1 ,-4, 5, 8-dimethanonapbthalene) - akin 0.25 Dinitrobensena akin 1 Dinitrotoluene - akin 1.5 Oinitro-o-creaol - akin 0.2 CPN (O-athyl O-p-nitropbanyl thiono- bcnxenephoaphonate) - akin 0.5 Farbam (ferric dimethyl dithlocarbamale) IS Ferrovanadium duat 1 Fluoride ' 2.5 Hydroquinone 2 Iron oxide fume Lead 15 0.2 Lead araenata 0.15 Lindane (hexachloroeydohexane, gamma iaomar) Lithium hydride .

t is conceivable that a chemist in a research or service laboratory in the petroleum industry might be subjected to a significant degree of Exposure to tetraethyl lead in the course of his work of carrying out distillations and like procedures.

rs t is conceivable that a chemist in a research or service laboratory in fhe petroleum industry might he subjected to a significant degree of Exposure to tetraethyl lead in the course of his work of carrying out instillations and like procedures, This has sever occurred, however, so v.-' .

They could get In serious position, should tetraethyl lead markets ' slump with the two now producers on the scene.

Since it has been handled and used mostly (not exclusively) in connection with the handling and use of tetraethyl lead, it has had little opportunity to reveal its harmful properties, for the precautions thrown around T.E.L. for the avoidance of cutaneous contact and respiratory exposure, have been such as to provide protection from the dibromide.