International Chemical Safety Cards NEOPENTYL GLYCOL ICSC: 0305 NEOPENTYL GLYCOL 2,2-Dimethyl-1,3-propanediol Neopentylene glycol Dimethylolpropane HOCH2C(CH3)2CH2OH Molecular mass: 104.2 CAS # 126-30-7 RTECS # TY5775000 ICSC # 0305 UN # 1325 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Water spray, powder. EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). EXPOSURE PREVENT DISPERSION OF DUST! INHALATION Cough, headache. Ventilation (not if powder). Fresh air, rest, and refer for medical attention. SKIN MAY BE ABSORBED! Redness, pain. Protective gloves, protective clothing. Remove contaminated clothes, rinse skin with plenty of water or shower, and refer for medical attention. EYES Redness, pain, blurred vision. Safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION Cough, nausea. Do not eat, drink, or smoke during work. Rinse mouth, give nothing to drink, and refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers, wash away remainder with plenty of water (extra personal protection: P2 filter respirator for harmful particles). Separated from strong oxidants, dry, ventilation along the floor. UN Haz Class: 4.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 0305 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1990 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

International Chemical Safety Cards NEOPENTYL GLYCOL ICSC: 0305 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE COLOURLESS TO WHITE HYGROSCOPICCRYSTALS. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. CHEMICAL DANGERS: Reacts withstrongoxidants causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. PDK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and through the skin, andby ingestion. INHALATION RISK: A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C;on dispersing, however, faster! EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin, and the respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 204-208°C Melting point: 120-130°C Relative density (water = 1): 1.07 Solubility in water, g/100 ml: 186 Vapour pressure, Pa at20°C: <10 Relative vapour density (air = 1): 3.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Flash point: 107°C Auto-ignition temperature: 388°C Explosive limits, vol% in air: 1.4-18.8 ENVIRONMENTAL DATA NOTES Data are insufficiently available on the effect of this substance on human health, therefore utmost care must be taken. NFPA Code: H1; F1; R0 ADDITIONAL INFORMATION ICSC: 0305 NEOPENTYL GLYCOL © IPCS, CEC, 1990

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 IDLH values.