International Chemical Safety Cards p-CHLOROBENZOIC ACID ICSC: 0503 4-Chlorobenzoic acid Chlorodracylic acid ClC6H4COOH / C7H5ClO2 Molecular mass: 156.6 ICSC #    0503 CAS #     74-11-3 RTECS # DG4976010 October 27, 1995 Peer reviewed 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. Water spray, powder. EXPLOSION EXPOSURE  •INHALATION Ventilation. Fresh air, rest.  •SKIN Protective gloves. Rinse and then wash skin with water and soap.  •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. Rinse mouth. Rest. 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. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0503 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 p-CHLOROBENZOIC ACID ICSC: 0503 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS WHITE SOLID IN VARIOUS FORMS. PHYSICAL DANGERS: CHEMICAL DANGERS: On combustion, forms toxic and corrosive fumes including hydrogen chloride. The solution in water is a weak acid. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) {{Limestone}}NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) {{Marble}}NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH IDLH: No data {{Limestone}} No data {{Marble}} No data 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: See Notes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 275°C Melting point: 243°C Relative density (water = 1): 1.5 Solubility in water: none Vapour pressure, Pa at 25°C: 0.3 Relative vapour density (air = 1): 5.4 Relative density of the vapour/air-mixture at 20°C (air = 1): 1 Flash point: 237.7°C Auto-ignition temperature: 545°C Octanol/water partition coefficient as log Pow: 2.65 ENVIRONMENTAL DATA N O T E S No data available on health effects. ADDITIONAL INFORMATION ICSC: 0503 p-CHLOROBENZOIC ACID (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.