HTH CHLORINATING GRANULES

SECTION 2: Hazards identification

CAS or CHEMICAL NAME: Calcium hypochlorite CAS NUMBER: 7778-54-3 PERCENTAGE RANGE: 40-55% HAZARDOUS PER 29 CFR 1910.1200: Yes EXPOSURE STANDARDS 1 mg/cubic meter (15 min. STEL - TWA) Arch chemicals Internal Exposure Standard CAS or CHEMICAL NAME: Sodium chloride CAS NUMBER: 7647-14-5 PERCENTAGE RANGE: 5-15% HAZARDOUS PER 29 CFR 1910.1200: No EXPOSURE STANDARDS: None Established CAS or CHEMICAL NAME: Calcium chlorate CAS NUMBER: 10137-74-3 PERCENTAGE RANGE: 0-4% HAZARDOUS PER 29 CFR 1910.1200: Yes EXPOSURE STANDARDS: None Established CAS or CHEMICAL NAME: Calcium chloride CAS NUMBER: 10043-52-4 PERCENTAGE RANGE: 0-4% HAZARDOUS PER 29 CFR 1910.1200: Yes EXPOSURE STANDARDS: None Established CAS or CHEMICAL NAME: Calcium hydroxide CAS NUMBER: 1305-62-0 PERCENTAGE RANGE: 0-5% HAZARDOUS PER 29 CFR 1910.1200: Yes EXPOSURE STANDARDS: OSHA(PEL) ACGIH(TLV) ppm mg/cubic-meter ppm mg/cubic-meter TWA: None CEILING: None STEL: None CAS or CHEMICAL NAME: Calcium carbonate CAS NUMBER: 471-34-1 PERCENTAGE RANGE: 0-4% HAZARDOUS PER 29 CFR 1910.1200: Yes EXPOSURE STANDARDS: OSHA(PEL) ACGIH(TLV) ppm mg/cubic-meter ppm mg/cubic-meter TWA: 15 (Total dust) 5 (Respirable fraction) CEILING: None STEL: None CAS or CHEMICAL NAME: Magnesium sulfate heptahydrate CAS NUMBER: 10034-99-8 (anhydrous 7487-88-9) PERCENTAGE RANGE: 25-35% HAZARDOUS PER 29 CFR 1910.1200:.Yes EXPOSURE STANDARDS: None Established CAS or CHEMICAL NAME: Water CAS NUMBER: 7732-18-5 PERCENTAGE RANGE: 17-22% HAZARDOUS PER 29 CFR 1910.1200: No EXPOSURE STANDARDS: None Established SECTION 3 PRECAUTIONS FOR SAFE HANDLING AND STORAGE DO NOT TAKE INTERNALLY. AVOID INHALATION OF DUST AND FUMES. AVOID CONTACT WITH EYES, SKIN OR CLOTHING. UPON CONTACT WITH SKIN OR EYES, WASH OFF WITH WATER. REMOVE AND WASH CONTAMINATED CLOTHING BEFORE REUSE. STORAGE CONDITIONS: Keep product tightly sealed in original containers. Store product in a cool, dry, well-ventilated area. Store away from combustible or flammable products. Keep product packaging clean and free of all contamination, including, e.g., other pool treatment products, acids, organic materials, nitrogen-containing compounds, dry powder fire extinguishers (containing mono-ammonium phosphate), oxidizers, all corrosive liquids, flammable or combustible materials, etc. DO NOT STORE AT TEMPERATURES ABOVE: 52 Deg.C (125 Deg.F) In the event that the calcium hypochlorite were to separate from the blend, storage above this temperature may result in rapid decomposition, evolution of chlorine gas and heat sufficient to ignite combustible products. Also, the magnesium sulfate heptahydrate will begin to loose water of crystallization at approximately 150 Deg.C (302 Deg.F); Should all the water of crystallization be lost, the likelihood of rapid decomposition occurring, as above, would be increased. PRODUCT STABILITY AND COMPATIBILITY SHELF LIFE LIMITATIONS: Shelf life (that is, the period of time before the product goes below stated label strength) is determined by storage time and temperatures. Do not store product at temperatures above 52 Deg.C (125 Deg.F). When stored under moderate temperature conditions, product will maintain stated label strength for approximately two years. Prolonged storage at 35 Deg.C (95 Deg.F) or above will significantly shorten the shelf life. Storage in a climate-controlled storage area or building is recommended in those areas where extremes of high temperature occur. INCOMPATIBLE MATERIALS FOR PACKAGING: Product packaging must be clean and free of contamination by other materials, including, e.g., other pool treatment products, acids, organic materials, nitrogen- containing compounds, dry powder fire extinguishers (containing mono- ammonium phosphate), oxidizers, all corrosive liquids, flammable or combustible materials, etc. INCOMPATIBLE MATERIALS FOR STORAGE OR TRANSPORT: Do not allow product to come in contact with other materials, including, e.g., other pool treatment products, acids, organic materials, nitrogen-containing compounds, dry powder fire extinguishers (containing mono-ammonium phosphate), oxidizers, all corrosive liquids, flammable or combustible materials, etc. SECTION 4 PHYSICAL DATA APPEARANCE: White granules or caplets FREEZING POINT: Not Applicable BOILING POINT: Not Applicable