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preface to fifteenth edition

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PRACTICAL LABORATORY INFORMATION 11.125<br />

TABLE 11.49<br />

TLV Concentration Limits for Gases and Vapors (Continued)<br />

Maximum allowable<br />

exposure<br />

Substance ppm mg · m 3 Toxicity<br />

Endrin—skin 0.1<br />

Epichlorohydrin 2 7.6 carcinogen<br />

2,3-Epoxy-1-propanol (glycidol) 50 150<br />

1,2-Ethanediamine 10 25<br />

Ethanethiol 0.5<br />

Ethanol 1000 1880<br />

Ethanolamine 3 7.5<br />

2-Ethoxyethanol (Cellosolve) 5 18<br />

2-Ethoxyethyl acetate 5 27<br />

Ethyl acetate 400 1400<br />

Ethyl acrylate 5 20<br />

Ethylamine 5 9.2 highly <strong>to</strong>xic<br />

Ethylbenzene 100 435<br />

Ethylene<br />

anesthetic<br />

Ethylene glycol 39<br />

Ethylene glycol dinitrate 0.2<br />

Ethyleneimine 0.05 carcinogen<br />

Ethylene oxide 1 <strong>to</strong>xic, carcinogen<br />

Ethyl formate 100 300<br />

Ethyl mercaptan 0.1 1<br />

Ethyl silicate 100 850<br />

Fluorine 1 2 highly <strong>to</strong>xic<br />

Fluorotrichloromethane (Freon 11) 1000 5600<br />

Formaldehyde 0.3 carcinogen<br />

Formamide 10 18<br />

Formic acid 5 9.4<br />

2-Furancarboxaldehyde (furfural) 2 7.9<br />

2-Furanmethanol 10 40<br />

Glycerol 10<br />

Heptachlor 0.5<br />

Heptane 400 1640<br />

2-Heptanone 50 233<br />

3-Heptanone 50 234<br />

Hexachloro-1,3-butadiene 0.02 carcinogen<br />

Hexachlorocyclohexane (lindane) 0.5<br />

Hexachloroethane 1 carcinogen<br />

Hexachloronaphthalene 0.2<br />

Hexamethylphosphoric triamide<br />

carcinogen<br />

Hexane 50 176<br />

2-Hexanone 5 20<br />

sec-Hexyl acetate 50 300<br />

Hexylene glycol 25<br />

Hydrazine 0.01 0.1 carcinogen<br />

Hydrogen bromide 3 10 highly <strong>to</strong>xic<br />

Hydrogen chloride 5 7 highly <strong>to</strong>xic<br />

Hydrogen cyanide 4.7 highly <strong>to</strong>xic<br />

Hydrogen fluoride 3 2 highly <strong>to</strong>xic<br />

Hydrogen iodide<br />

highly <strong>to</strong>xic<br />

Hydrogen peroxide (90%) 1 1.4

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