International Chemical Safety Cards NITRILOTRIACETIC ACID ICSC: 1238 NITRILOTRIACETIC ACID NTA N,N-Bis(carboxymethyl)glycine Nitrilo-2,2',2-triacetic acid C6H9NO6/N(CH2COOH)3 Molecular mass: 191.2 CAS # 139-13-9 RTECS # AJ0175000 ICSC # 1238 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. 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. Sore throat. Local exhaust or breathing protection. Fresh air, rest. SKIN Redness. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap. EYES Redness. Safety goggles. 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. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P3 filter respirator for toxic particles). Separated from strong oxidants. Well closed. SEE IMPORTANT INFORMATION ON BACK ICSC: 1238 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards NITRILOTRIACETIC ACID ICSC: 1238 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS WHITE CRYSTALLINE POWDER. PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic and irritating fumes including nitrogen oxides. The solution in water is a weak acid. Reacts with strong oxidants. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. INHALATION RISK: No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin and the respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the kidneys. This substance is possibly carcinogenic to humans. PHYSICAL PROPERTIES Melting point (decomposes): 242-246°C Solubility in water, g/100 ml at 22.5°C: poor (0.128 g/100 ml)

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ICSC: 1238 NITRILOTRIACETIC ACID © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.