International Chemical Safety Cards AMMONIUM OXALATE ICSC: 1036 AMMONIUM OXALATE Oxalic acid, diammonium salt Ethanedioic acid, diammonium salt C2H8N2O4 / NH4OOCCOONH4 Molecular mass: 124.1 CAS # 1113-38-8 RTECS # RO2750000 ICSC # 1036 UN # 2811 EC # 607-007-00-3 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! INHALATION Cough. Sore throat (see Ingestion). Local exhaust or breathing protection. Fresh air, rest. SKIN Redness. Burning sensation. Pain. Blisters. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. EYES Redness. Pain. Severe deep burns. Safety goggles, or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION Abdominal pain. Convulsions. Drowsiness. Dullness. Shock or collapse. Vomiting. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Rest. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles). Separated from food and feedstuffs, oxidants. Dry. Do not transport with food and feedstuffs. Xn symbol R: 21/22 S: (2-)24/25 Note: A UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1036 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

International Chemical Safety Cards AMMONIUM OXALATE ICSC: 1036 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS, COLOURLESS, CRYSTALLINE POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic and corrosive fumes including ammonia and nitrogen oxides. Reacts with oxidants. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body 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. The substance may cause effects on the central nervous system and kidneys , resulting in impaired functions. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the kidneys. PHYSICAL PROPERTIES Decomposes below melting point at see Notes°C Relative density (water = 1): 1.50 Solubility in water: moderate ENVIRONMENTAL DATA N O T E S The physical properties are those of the monohydrate. Temperature of decomposition unknown in literature. Transport Emergency Card: TEC (R)-61G12c ADDITIONAL INFORMATION ICSC: 1036 AMMONIUM OXALATE © IPCS, CEC, 1993

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.