Tetraethyl lead even in a diluted form such as exists in the case of Ethyl gasolines, coming in contact with the skin is readily absorbed and may lead to mild cases of lead poisoning.

Tetraethyl lead process flow, reaction and material requirements..19 Tables 1.

Stationary sources included in the study are primary and secondary lead smelters, a primary lead refinery, battery plants and the only remaining tetraethyl lead production plant.

Nor do we know for a certainty why it is that the blood does not develop a sufficiently elevated concentration of lead when tetraethyl lead is absorbed into the body.

Bohlnant ' I hare your letter of February 20th concerning the physiological effect of exhaust gas from gasoline containing tetraethyl lead.

However, they have very little to do with the dangers of tetraethyl lead or Ethyl Gasoline, but are quite interesting with the gener al problem of lead poisoning* I hope to be able to re port soon on our experimental work on tribromanallne.

,tetraethyl lead.

Nor do we know for a certainty why it is that the blood does not develop a sufficiently elevated concentration of lead when tetraethyl lead is absorbed into the body.

The matter concerned in our discussion mas the imminent likelihood of the use of tetramethyl lead as a substitute in part or in whole for tetraethyl lead.

Redden, I should explain to him that there lias been a suspicion (which has not been verified by any facts) that the absorption of tetraethyl lead added to gasoline if handled carelessly, might in due time give rise to chronic lead poisoning; that in view of this suspicion careful investigations have been made among men and upon animals to determine whether or not there 13 any likelihood of thi3 occurrence; that no evidence whatever has been found that lead absorption in appreciable quantities occurs under these conditions; that, in spite of that fact, however, the Ethyl Gasoline Corporation has made it a matter of policy to educate gasoline handlers not to use Ethyl gasoline in cleansing tools or for any other purpose which brought about unnecessary contact of the skin with the gasoline, and that it looks with disfavor and #2 Mr# E l Webb January 10, 1928 discourages the use of Bthyl gasoline In the way suggested in his letter largely because encouragement of such procedure would tend to offset the attempts which had been made (not only by the Ethyl Gasoline Corporation, but'by the United States Public Health ^ervice) to educate gasoline handlers in the avoidance of any unneces sary contact not only with Ethyl gasoline but with materials which are intended purely for use as motor fuels# If you do not wish to make your suggestion as strong as I have outlined above, it will be a very simple matter merely to set forth the facts and allow Dr Redden:to make whatever application of them he chooses, on his own responsibility.

Webb came to me for advice for I had done the medical investigation that revealed the nature of the new chemical compound - tetraethyl-lead which had been synthesized in order to have a compound of lead (organic lead) which was soluble in gasoline.

Louisiana Plant Tetraethyl Lead Tetramethyl Lead Inorganic Lead Ethylene Dichloride Ethylene Dibromide Hydrogen Chloride Chlorine 1 156 4 22 111 <1 <1 <1 40 1 5 28 <1 <1 <1 Ethyl Corporation - Pasadena.

O-ethyl 0>(4>(tnethyithio)pbenyll ester Pbosphonothioic acid, methyl-, S-(2-(di- isopropylamioo)ethyl> O-ethyl ester Pbospbonc acid, dimethyl t-(methylthio)pbenyl ester Piprotal Iron pehtacarnanyl Mercuric acetate Mercuric chionde Mercuric oxide Methoxyethylraercunc acetate Methylmercunc dicyanamide Nickel Nickel carbonyl Osmium tetroxide Phenylmercury acetate Plaunous chionde Platinum tetrachionde Rhodium tnchJonde Tellunum Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallods chionde Thallous malonate TfcaUous sulfate Ptnmifos-ethyl PoUiaun arsemte Piixnecarto Pnxboate Pyrlnuml Sodium arsenate Sodium arsemte Sodium cacodylate Sodium fluoroacetate Sodium pentachtarophenate Strychnine Strychnine sulfate Sulfotep Solvents--I Widely used in paints and cleaning materi

Cadmium oxide Cadmium stearate Chromic chloride Cobalt Cobalt carbonyl Ethylmercuric phosphate Gallium trichloride Iridium tetrachloride Iron pentacarbonyl Mercuric acetate Mercuric chloride Mercuric oxide Methoxyethylmereunc acetate Methvlmercunc dicvanamide Nickel Nickel carbonyl Osmium te'roxide Phenylmercurv acetate Plntinous . tilonde Platinum tetrachloride Rhodium trichloride Tellurium Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallous chloride Thallous malonate Thallous sulfate Solvents--6 Widely used in paints and cleaning materials.

O-ethyl 0>(4>(tnethyithio)pbenyll ester Pbosphonothioic acid, methyl-, S-(2-(di- isopropylamioo)ethyl> O-ethyl ester Pbospbonc acid, dimethyl t-(methylthio)pbenyl ester Piprotal Iron pehtacarnanyl Mercuric acetate Mercuric chionde Mercuric oxide Methoxyethylraercunc acetate Methylmercunc dicyanamide Nickel Nickel carbonyl Osmium tetroxide Phenylmercury acetate Plaunous chionde Platinum tetrachionde Rhodium tnchJonde Tellunum Tetraethyl lead Tetramethyl lead Thallic oxide Thallous carbonate Thallods chionde Thallous malonate TfcaUous sulfate Ptnmifos-ethyl PoUiaun arsemte Piixnecarto Pnxboate Pyrlnuml Sodium arsenate Sodium arsemte Sodium cacodylate Sodium fluoroacetate Sodium pentachtarophenate Strychnine Strychnine sulfate Sulfotep Solvents--I Widely used in paints and cleaning materi