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7. Handling and storage <br />Precautions for safe handling <br />Use only with adequate ventilation. Do not breathe gas. Do not get in eyes, on skin, on clothing. <br />Wear appropriate personal protective equipment (See Section 8). Eating, drinking, and smoking <br />should be prohibited in areas where this material is handled, stored, and processed. Observe good <br />industrial hygiene practices. <br />Conditions for safe storage, <br />Store in a cool, dry, well -ventilated place. Secure cylinders in an upright position at all times, close <br />including any incompatibilities <br />all valves when not in use. Keep container tightly closed and sealed until ready for use. Protect <br />cylinders from damage. Store away from incompatible materials (See Section 10), <br />8. Exposure controlslpersonal protection <br />Occupational exposure limits <br />US. OSHA Table Z-1 Limits for Air Contaminants (29 CFR 1910.1000) <br />Material Type Value <br />Sulfur dioxide (CAS PEL 13 mg/m3 <br />7446-09-5) <br />5 ppm <br />US. ACGIH Threshold Limit Values <br />Material Type Value <br />Sulfur dioxide (CAS STEL 0.26 ppm <br />7446-09-6) <br />US. NIOSH: Pocket Guide to Chemical Hazards <br />Material Type Value <br />Sulfur dioxide (CAS <br />STEL 13 mg/m3 <br />7446-09-5) <br />5 ppm <br />TWA 5 mg/m3 <br />2 pprn <br />Biological limit values <br />No biological exposure limits noted for the ingredient(s). <br />Appropriate engineering <br />Use process enclosures, local exhaust ventilation, or other engineering controls to control airborne <br />controls <br />levels below recommended exposure limits. The engineering controls also need to keep gas, <br />vapor, or dust concentrations below any lower explosive limits. <br />Individual protection measures, such as personal protective equipment <br />Eyelface protection <br />Wear approved safety glasses or goggles. <br />Skin protection <br />Hand protection <br />Wear appropriate chemical resistant gloves. <br />Other <br />Wear protective clothing appropriate for the risk of exposure. <br />Respiratory protection <br />If engineering controls do not maintain airborne concentrations below recommended exposure <br />limits (where applicable) or to an acceptable level (in countries where exposure limits have not <br />been established), an approved respirator must be worn. <br />Thermal hazards <br />Wear appropriate thermal protective clothing, when necessary. <br />General hygiene <br />Do not eat, drink or smoke when using the product. Wash thoroughly after handling. Provide <br />considerations <br />eyewash station and safety shower. Handle in accordance with good industrial hygiene and safety <br />practices. <br />9. Physical and chemical <br />properties <br />Appearance <br />Colorless liquefied gas. <br />Physical state <br />Gas. <br />Form <br />Liquefied gas. <br />Color <br />Colorless. <br />Odor <br />Strong pungent. <br />Odor threshold <br />Not available. <br />Melting pointifreezing point <br />-104 °F (-75.56 °C) <br />Initial boiling point and boiling <br />14 °F (-10 °C) <br />range <br />Flash point <br />Not available. <br />Sulfur dioxide SDS US <br />920566 Version #: 02 Revision date: 30-July-2014 Issue date: 11-July-2014 3/7 <br />