International Chemical Safety Cards MONOLINURON ICSC: 1273 MONOLINURON 3-(4-chlorophenyl)-1-methoxy-1-methylurea Urea, N'-(4-chlorophenyl)-N-methoxy-N-methyl- 3-(p-chlorophenyl)-1-methoxy-1-methylurea C9H11ClN2O2 Molecular mass: 214.6 CAS # 1746-81-2 RTECS # YS6425000 ICSC # 1273 EC # 006-032-00-1 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, water spray, foam, carbon dioxide. EXPLOSION Risk of fire and explosion if formulations contain flammable/explosive solvents. EXPOSURE PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN! INHALATION Local exhaust or breathing protection. Fresh air, rest. SKIN Protective gloves. Rinse skin with plenty of water or shower. EYES 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. Wash hands before eating. Rinse mouth. Rest. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Do NOT wash away into sewer. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: chemical protection suit including self-contained breathing apparatus). Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Do not transport with food and feedstuffs. Xn symbol R: 22 S: (2-)22 SEE IMPORTANT INFORMATION ON BACK ICSC: 1273 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 MONOLINURON ICSC: 1273 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating or on burning producing toxic fumes including hydrogen chloride and nitrogen oxides. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. INHALATION RISK: Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the blood , resulting in anaemia. PHYSICAL PROPERTIES Melting point: 80-83°C Solubility in water: none Vapour pressure, Pa at 22°C: 0.02 Octanol/water partition coefficient as log Pow: 2.2 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. This substance may be hazardous to the environment; special attention should be given to algae and water plants. Avoid release to the environment in circumstances different to normal use. N O T E S If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s). Carrier solvents used in commercial formulations may change physical and toxicological properties. Aresin, Arezin, Arezine, Arresin are trade names. ADDITIONAL INFORMATION ICSC: 1273 MONOLINURON © 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.