MCPA ICSC: 0054 4-Chloro-2-methylphenoxyacetic acid 4-Chloro-o-tolyloxyacetic acid C9H9ClO3 Molecular mass: 200.6 ICSC #    0054 CAS #     94-74-6 RTECS # AG1575000 UN #        3345 EC #         607-051-00-3 Types of Hazard/ Exposure Acute Hazards/ Symptoms Prevention First Aid/ Fire Fighting FIRE Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: use appropriate extinguishing media. Explosion Risk of fire and explosion if formulations contain flammable/explosive solvents. Exposure PREVENT DISPERSION OF DUST! AVOID Exposure OF (PREGNANT) WOMEN!  •Inhalation Headache. Nausea. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention.  •Skin Redness. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •Eyes Redness. 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 Abdominal pain. Nausea. Unconsciousness. Vomiting. Weakness. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention. Spillage Disposal Storage Packaging & Labelling Personal protection: P2 filter respirator for harmful particles. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Separated from food and feedstuffs . Do not transport with food and feedstuffs. Xn symbol R: 22-38-41 S: 2-26-37-39 UN Hazard Class: 6.1 MCPA ICSC: 0054 Important Data Physical State; Appearance: WHITE CRYSTALLINE POWDER Physical Dangers: Chemical Dangers: The substance decomposes on heating producing toxic and corrosive fumes including hydrogen chloride . The substance is a weak acid. Occupational Exposure Limits: TLV not established. Routes of Exposure: The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Inhalation Risk: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered. Effects of Short-Term Exposure: The substance is irritating to the eyes, the skin and the respiratory tract. Effects of Long-Term or Repeated Exposure: Animal tests show that this substance possibly causes toxicity to human reproduction or development. See Notes. Physical Properties Melting point: 118-119°C Relative density (water = 1): 1.6 Solubility in water: none Octanol/water partition coefficient as log Pow: 3.3 Environmental Data The substance is harmful to aquatic organisms. N O T E S MCPA is a chlorophenoxy-herbicide which, as a group, has been classified as possibly carcinogenic to humans. Depending on the degree of exposure, periodic medical examination is suggested. Carrier solvents used in commercial formulations may change physical and toxicological properties. Card has been partly updated in October 2005. See section Emergency Response. Transport Emergency Card: TEC (R)-61GT7-III ADDITIONAL INFORMATION ICSC: 0054 MCPA (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.