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Exposure Guidelines: <br /> Ingredient OSHA PEL ACGIH TLV <br /> Water Not established Not established <br /> Potassium Tetraborate Not established Not established <br /> Sodium Sulfite Not established Not established <br /> Hydroquinone 2 mg/m3 2 m9/m3 <br /> Potassium Sulfite Not established Not established <br /> Potassium Hydroxide 2 mg/m3(c) 2 mg/m3 (c) <br /> 5-Sulfosalicylic Acid Not established Not established <br /> N-Butyldiethanolamine Not established Not established <br /> Potassium Bromide Not established Not established <br /> TWA = time weighted average STEL= short term limit (c) = ceiling <br /> SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES <br /> Appearance: Yellowish liquid Odor: None <br /> Boiling Point: approx. 100°C- Odor Threshold: • No-data <br /> Specific Gravity: 1.25 Reactivity with Water: None <br /> Vapor Pressure: approx. 15 mm Hg Melting Point: No data <br /> Evaporation Rate: 1 (water=1) Freezing Point: No data <br /> Percent Volatile: approx. 65 Percent VOC: approx. 11 <br /> Solubility in Water: Completely Vapor Density: No data <br /> . pH: 12.0 <br /> Water-Oil Partition Coefficient: No data <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 /> —60• > 5000 mg/kg oral, rat <br /> Acute Overexposure: Irritating by contact with skin and eyes. May cause corneal 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 /> • <br /> Page3 of 4 <br /> 56411001 <br />