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Exposure Guidelines: <br />Ingredient <br />OSHA PEL <br />ACGIH TLV <br />• Water <br />Not established <br />Not established <br />Potassium Tetraborate <br />Not established <br />Not established <br />Sodium Sulfite <br />Not established <br />Not established <br />Hydroquinone <br />2 mg /m3 <br />2 mglml <br />Potassium Sulfite <br />Not established <br />Not established <br />Potassium Hydroxide <br />2 mg /m3 (c) <br />2 mg /m3 (c) <br />5- Sulfosalicylic Acid <br />Not established <br />Not established <br />N- Butyldiethanolamine <br />Not established <br />Not established <br />Potassium Bromide <br />Not established <br />Not established <br />TWA = time weighted average <br />STEL = short term limit (c) = ceiling <br />SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES <br />Appearance: Yellowish liquid <br />Odor: None <br />Boiling Point: approx. 100°C- <br />Odor Threshold: No-data--- <br />Specific Gravity: 1.25 <br />Reactivity with Water: None <br />Vapor Pressure: approx. 15 mm Hg <br />Melting Point: No data <br />Evaporation Rate: 1 (water -1) <br />Freezing Point: No data <br />Percent Volatile: approx. 65 <br />Percent VOC: approx. 11 <br />• Solubility in Water: Completely <br />Vapor Density: No data <br />pH.. 12.0 <br />Water -Oil Partition Coefficient: <br />No data <br />L� <br />SECTION 10. STABILITY AND REACTIVITY <br />Hazardous polymerization will not occur if product is used and stored as directed. <br />Product is stable if used and stored as directed. <br />Hazardous Decomposition Products: Sulfur dioxide. <br />Materials to avoid: Strong acids. Chlorine compounds. Oxidizers. <br />Conditions to avoid: Excessive heat. <br />SECTION 11. TOXICOLOGICAL INFORMATION <br />L ZO: > 5000 mg/kg oral, rat <br />A_ cute Overexposure: Irritating by contact with skin and eyes. May cause comeal opacification. <br />Irritating to gastrointestinal tract by ingestion. May cause headache, nausea, <br />vomiting and diarrhea. Irritating to respiratory tract if inhaled. May cause <br />respiratory and pulmonary stimulation. <br />Chronic Overexposure: Chronic dermatitis. May have effects on the kidneys and liver causing <br />discolored urine. May cause muscle tremors, convulsions and delirium. <br />Hydroquinone shows limited evidence of carcinogenic activity in rats and <br />mice. Hydroquinone is a reproductive toxin. <br />cD <br />Page3 or 4 <br />56411001 <br />