Determination of Acute Reference Exposure Levels for Airborne Toxicants March 1999 ACUTE TOXICITY SUMMARY FORMALDEHYDE
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چکیده
Description colorless gas Molecular formula CH2O Molecular weight 30.03 Density 0.815 g/L @ -20°C Boiling point -19.5°C Melting point -92°C Vapor pressure 3883 mm Hg @ 25°C (Howard, 1989) Flashpoint 300° C or 573°F Explosive limits upper = 73% lower = 7% Solubility soluble in water, alcohol, ether, other polar solvents Odor threshold 0.05-0.5 ppm Odor description very pungent odor; straw-like Metabolites formic acid Conversion factor 1 ppm = 1.24 mg/m3 @ 25°C
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Determination of Acute Reference Exposure Levels for Airborne Toxicants March 1999 ACUTE TOXICITY SUMMARY PERCHLOROETHYLENE
Description colorless liquid Molecular formula C2Cl4 Molecular weight 165.83 Density 1.6227 g/cm @ 20°C Boiling point 121°C Melting point -19°C Vapor pressure 18.47 mm Hg @ 25°C Flashpoint unknown Explosive limits unknown Solubility soluble in alcohol, ether, chloroform, benzene and hexane; practically insoluble in water Odor threshold 47 ppm (geometric mean) (AIHA, 1989) Odor description color...
متن کاملDetermination of Acute Reference Exposure Levels for Airborne Toxicants March 1999 ACUTE TOXICITY SUMMARY PERCHLOROETHYLENE
Description colorless liquid Molecular formula C2Cl4 Molecular weight 165.83 Density 1.6227 g/cm @ 20°C Boiling point 121°C Melting point -19°C Vapor pressure 18.47 mm Hg @ 25°C Flashpoint unknown Explosive limits unknown Solubility soluble in alcohol, ether, chloroform, benzene and hexane; practically insoluble in water Odor threshold 47 ppm (geometric mean) (AIHA, 1989) Odor description color...
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Description colorless or yellow liquid Molecular formula HNO3 Molecular weight 63.02 Density 1.50269 g/cm @ 25°C Boiling point 83° C with decomposition Melting point -41.59°C Vapor pressure 62 mm Hg @ 25°C Flashpoint not applicable Explosive limits not applicable Solubility miscible in water Odor threshold 0.27 ppm (AIHA, 1989) Odor description choking odor Metabolites oxides of nitrogen, parti...
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