International Chemical Safety Cards o-TOLUENESULFONAMIDE ICSC: 1581 2-Toluenesulfonamide Toluene-2-sulfonamide o-Methylbenzenesulfonamide C7H9NO2S Molecular mass: 171.2 ICSC #    1581 CAS #     88-19-7 RTECS # XT4900000 April 19, 2005 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. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Ventilation.  •SKIN Protective gloves.  •EYES Redness. Pain. 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. Rinse mouth. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P2 filter respirator for harmful particles. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Separated from strong oxidants, acids, bases . R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1581 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 o-TOLUENESULFONAMIDE ICSC: 1581 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 burning producing toxic fumes including nitrogen oxides and sulfur oxides . Reacts with acids , bases and strong oxidants . OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: May cause mechanical irritation to the eyes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: >270°C Melting point: 156°C Density: 1.46 g/cm3 Solubility in water, g/100 ml at 25°C: 0.162 Vapour pressure, Pa at 25°C: negligible Octanol/water partition coefficient as log Pow: 0.84 ENVIRONMENTAL DATA N O T E S The substance is in commercial mixtures with p-toluenesulfonamide, see ICSC 1557. ADDITIONAL INFORMATION ICSC: 1581 o-TOLUENESULFONAMIDE (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.