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MATERIAL SAFETY DATA SHEET 000006489/F/USA - Q-0032.621A Approval Date: 09/26/1997 Print Date: 09/27/1997 Page 4 -------------------------------- ---------------------------------------------- pH: 10.0 Flash Point: None, noncombustible liquid ------------------------------------------------------------------------------ 10. STABILITY AND REACTIVITY Stability: Stable Incompatibility: None with common materials and contaminants with which the material may reasonably come into contact. Hazardous Decomposition Products: None Hazardous Polymerization: Will not occur. ------------------------------------------------------------------------------ 11. TOXICOLOGICAL INFORMATION Effects of Exposure: Inhalation: Expected to be a low hazard for usual industrial or commercial handling by trained personnel. In contact with strong acids or if heated, sulfites may liberate sulfur dioxide gas. Sulfur dioxide gas is irritating to the respiratory tract. Some asthmatics or hypersensitive individuals may experience difficult breathing. Eyes: No specific hazard known. May cause transient irritation. Skin: May cause allergic skin reaction. Ingestion: May be harmful if swallowed. Some asthmatics or sulfite-sensitive individuals may experience wheezing, chest tightness, stomach upset, hives, faintness, weakness and diarrhea. Acute Toxicity Data: Data for 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate Oral LD-50 (male rat) : 25-50 mg/kg (target organ effects: kidney) Oral LD-50 (female rat) : 30 mg/kg (target organ effects: kidney) Oral LD-50 (mouse) : 141 mg/kg (target organ effects: kidney) Dermal LD-50: >2000 mg/kg Skin irritation: moderate Repeated skin application: moderate irritation Skin sensitization (human) : positive Eye irritation (unwashed eyes) : moderate Eye irritation (washed eyes) : slight Inhalation study (164 mg/m3, 6 hours, rat) : 0/10 died Definitions for the following section(s) : LOEL = Lowest-observed-effect