International Chemical Safety Cards POLYACRYLIC ACID, SODIUM SALT ICSC: 1429 Acrylic acid homopolymer, sodium salt Carboxy vinyl polymer, sodium salt 2-Propenoic acid homopolymer, sodium salt Sodium polyacrylate (C3H3O2)n·Na Molecular mass: Polymer, variable molecular mass ICSC #    1429 CAS #     9003-04-7 RTECS # AT4680000 April 09, 2008 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. NO open flames. Powder, alcohol-resistant foam, water in large amounts, carbon dioxide. EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Ventilation, local exhaust, or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Remove contaminated clothes.  •EYES Redness. Safety spectacles 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. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. Separated from oxidants . Signal: Warning Health haz May cause damage to lungs through prolonged or repeated exposure if inhaled SEE IMPORTANT INFORMATION ON BACK ICSC: 1429 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 POLYACRYLIC ACID, SODIUM SALT ICSC: 1429 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE POWDER , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. CHEMICAL DANGERS: Reacts violently with oxidants causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK: 0.05 mg/m3 (Respirable fraction); Carcinogen category: 4; Pregnancy risk group: C (DFG 2008). ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: May cause mechanical irritation. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Lungs may be affected by repeated or prolonged exposure. on not to select: Tumours have been detected in experimental animals but may not be relevant to humans. PHYSICAL PROPERTIES (See Notes) Density: 1.1 - 1.4 g/cm³ Solubility in water: good ENVIRONMENTAL DATA N O T E S The substance is combustible but no flash point is available in literature. Properties may vary with the molecular weight. Physical properties are for the acid form of the polymer. The recommendations on this Card also apply to polyacrylic acid, CAS# 9003-01-4. ADDITIONAL INFORMATION ICSC: 1429 POLYACRYLIC ACID, SODIUM SALT (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.