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APPENDIX A: HAZARDOUS PROPERTY INFORMATION Explanations and footnotes Water solubility is expressed in ifferent terms in different references. Many references use the term "insoluble" for materials that will not readily mix with water, such as gasoline. However, most of these materials are water sol ble at the part per millon or part per billion level. Gasoline for example, is insoluble in the gross sense, and will be found as a discreet layer on top of the ground water. But certain gasoline constituents, such as benzene, toluene, and xylene will also be found in solution in the ground water at the part per millon or part per billion level. A. Water solubility expressed as 0 . 2g means 0. 2 grams per 100 grams water at 20°C. B. Solubility of metals depends on the compound in which they are present. C. Several chlorinated hydrocarbons exhibit no flash point in conventional sense, but will burn in presence of high energy ignition source or will form explosive mixtures at temperatures above 200°F. i D. Practically non-flammable under standard conditions. E. Expressed as mm Hg under standard conditions F. Explosive concentrations of airborne dust can occur in confined areas. G. Values for Threshold Limit Value - Time Weighted Average (TLV-TWA) are OSHA Permissible Exposure Limits (PEL) except where noted in H. and I . H. TLV - TWA adopted by the American Conference of Government Industrial Hygienists (ACGIH) whica is lower than the OSHA PEL. I . TLV - TWA recommended by the National Institute for Occupational Safety and Health (NIOSH) . A TLV or PEL has not been adopted by the ACGIH or OSHA. J. A. - Corrosive B. - Flammable C. - Toxic D. - Volatile E. - Reactive F. - Radioactive G. - Carcinogen H. - Infectious $ F. Dermal Toxicity data is summarized in the following three categories: 30-097A.H&S 10