【Product Name】Polyoxymethylene 【Synonyms】FormagenParaformPolyoxymethylene 【CAS】30525-89-4 【Formula】(CH2O)n 【Molecular Weight】30.01 【EINECS】200-001-8 【RTECS】RV0540000 【RTECS Class】Agricultural Chemical and Pesticide; Mutagen; Primary Irritant 【Merck】12,7158 【Beilstein/Gmelin】102769 【EC Class】harmful, irritant, carcinogenic, sensitizing Physical and Chemical Properties Back to Contents 【Appearance】A white solid with a light pungent odor. A linear polymer of formaldehyde of formula HO(CH2O)xH where x averages about 30. 【Solubility in water】Decomposes 【Melting Point】123 【Boiling Point】135 - 136 (13 torr) 【Vapor Pressure】11 【Density】1.46 g/cm3 (20 C) 【Heat Of Vaporization】 【Heat Of Combustion】-589 kJ/mol 【Usage】Microbiocide, fungicide, insecticide. First Aid Measures Back to Contents 【Ingestion】Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. 【Inhalation】Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. 【Skin】Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes. 【Eyes】Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes). Handling and Storage Back to Contents 【Storage】Keep away from heat and flame. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Keep away from strong bases. 【Handling】Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get on skin or in eyes. Do not ingest or inhale. Hazards Identification Back to Contents 【Inhalation】May cause severe irritation of the upper respiratory tract with pain, burns, and inflammation. May cause anosmia (loss of smell). Inhalation of high concentrations may cause pulmonary edema. Harmful if inhaled. 【Skin】May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause hives. Causes severe skin irritation and possible burns. Contact with dust causes drying, cracking, and scaling of the skin. 【Eyes】May result in corneal injury. Causes severe eye irritation and burns. 【Ingestion】Symptoms may include: headache, excitement, fatigue, nausea, vomiting, stupor, and coma. May cause systemic toxicity with acidosis. May cause severe digestive tract irritation with abdominal pain, nausea, vomiting and diarrhea. May be harmful if swallowed. 【Hazards】Changes to formaldehyde gas, which is highly flammable. 【EC Risk Phrase】R 20/22 34 40 43 【EC Safety Phrase】S 22 26 36/37/39 45 【UN (DOT)】2213 Exposure Controls/Personal Protection Back to Contents 【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. 【Respirators】A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use. 【Exposure Effects】Prolonged or repeated eye contact may cause conjunctivitis. Repeated inhalation may cause chronic bronchitis. Repeated exposure may cause sensitization dermatitis. 【Exposure limit(s)】C 0.3 ppm TLV {C 0.37 mg/m3} 【Poison Class】4 (Substances and products that must be considered harmful) Fire Fighting Measures Back to Contents 【Autoignition】300 【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Combustion generates toxic fumes. Flammable solid. May re-ignite after fire is extinguished. May burn rapidly with flare-burning effect. Extinguishing media: For large fires, use water spray, fog or regular foam. For small fires, use dry chemical, carbon dioxide, sand, earth, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out. 【Upper exp. limit】73 【Lower exp. limit】7 【Fire Potential】Moderately flammable. Requires moderate heating. Accidental Release Measures Back to Contents 【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. Stability and Reactivity Back to Contents 【Stability】Stable, however, can decompose above 260 C. 【Incompatibilities】Strong oxidizing agents, strong bases, isocyanates, anhydrides, bronze, brass, copper, copper alloys, steel, strong reducing agents, acids. 【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, formaldehyde. 【Combustion Products】When heated, it emits formaldehyde gas and carbon monoxide.. Transport Information Back to Contents 【UN Number】2213 【Hazard Class】4.1 【Packing Group】III 【HS Code】3808 40 90
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