International Chemical Safety Cards PARAFORMALDEHYDE ICSC: 0767 Polyoxymethylene Paraform/formagen (CH2O)n / HO(CH2O)nH ICSC #    0767 CAS #     30525-89-4 RTECS # RV0540000 UN #        2213 March 28, 1996 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, alcohol-resistant foam, water spray, carbon dioxide. EXPLOSION Above 71°C explosive vapour/air mixtures may be formed. Finely dispersed particles form explosive mixtures in air. Above 71°C use a closed system, ventilation. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN Redness. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •EYES Redness. Pain. Safety goggles, or eye protection in combination with breathing protection if powder. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water (extra personal protection: A/P2 filter respirator for organic vapour and harmful dust). Separated from strong oxidants, strong bases, strong acids. Cool. Dry. Keep in a well-ventilated room. Airtight. R: S: UN Hazard Class: 4.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 0767 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards PARAFORMALDEHYDE ICSC: 0767 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE SOLID IN VARIOUS FORMS , WITH PUNGENT ODOUR. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. CHEMICAL DANGERS: The substance decomposes on heating or on contact with oxidants, acids and bases producing flammable formaldehyde. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and by ingestion. INHALATION RISK: Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin and the respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. PHYSICAL PROPERTIES Melting point (decomposes): 120-180°C Relative density (water = 1): 1.46 Solubility in water: slow in cold water, evolution of formaldehyde Vapour pressure, kPa at 25°C: <0.2 Flash point: 71°C c.c. Auto-ignition temperature: 300°C Explosive limits, vol% in air: 7.0-73.0 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S TLV for formaldehyde: C 0.3 ppm; C 0.37 mg/m3 A2 (ACGIH 1995-1996). Also consult ICSC # 0275 (formaldehyde). Transport Emergency Card: TEC (R)-41G10 NFPA Code: H2; F1; R0; ADDITIONAL INFORMATION ICSC: 0767 PARAFORMALDEHYDE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.