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Sodium Carbonate, Anhydrous (497-19-8) <br />Date: 12/19/2008 <br />• RESPIRATORY: Whenever dust in the worker's breathing zone cannot be controlled with <br />ventilation or other engineering means, workers should wear respirators or dust masks approved by <br />NIOSH/MSHA, EU CEN or comparable certification organization to protect them against airborne <br />dust. <br />PROTECTIVE CLOTHING: Dry product is generally non-irritating to intact skin. <br />However, this product can be irritating where skin has been damaged and can create skin irritation <br />after long exposures when moisture is present. Under such conditions, gloves and long-sleeved <br />clothing are recommended to minimize skin contact. <br />COMMENTS: <br />ADDITIONAL EXPOSURE GUIDELINES: <br />Federal guidelines treat the ingredient(s) in this product as a nuisance dust, as no product-specific <br />guidelines have been issued for exposure. As with all nuisance dusts, worker breathing zone concentrations <br />should be measured by validated sampling and analytical methods. The following limits (OSHA and <br />MSHA) apply to this material: <br />Particulates Not Otherwise Regulated: <br />OSHA (PEL / TWA): 15 mg/m3 (total dust); 5 mg/m3 (resp fraction) <br />MSHA (PEL / TWA): 10 mg/m3 (total dust) <br />The information noted above provides general guidance for handling this product. Specific work <br />environments and material handling practices will dictate the selection and use of personal protection <br />equipment (PPE). <br />9. PHYSICAL AND CHEMICAL PROPERTIES <br />ODOR: Odorless <br />APPEARANCE: White, granular solid. <br />AUTOIGNITION TEMPERATURE: Not applicable <br />BOILING POINT: Decomposes <br />COEFFICIENT OF OIL / WATER: Not applicable <br />DENSITY / WEIGHT PER VOLUME: (g/ml) Dense Grades = 0.86 - 1.12; Light Grades = 0.70 - <br /> 0.90 <br />EVAPORATION RATE: Not applicable (Butyl Acetate = 1) <br />FLASH POINT: Non-combustible <br />MELTING POINT: 851 °C (1,564 °F) <br />ODOR THRESHOLD: Not applicable <br />OXIDIZING PROPERTIES: Not applicable <br />• <br />Page 4 of 10