International Chemical Safety Cards C10-13 ALKYLBENZENESULFONIC ACID, SODIUM SALT ICSC: 1602 Sodium alkylbenzene sulfonate Linear alkylbenzene sulfonic acid sodium salt Linear alkylbenzene sodium sulfonate LAS C11•6H24•2C6H4SO3Na Molecular mass: 342.4 ICSC #    1602 CAS #     68411-30-3 October 20, 2005 Validated 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: use appropriate extinguishing media. EXPLOSION EXPOSURE  •INHALATION Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Burns. Safety goggles . First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Diarrhoea. Nausea. Vomiting. Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. 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 containers; if appropriate, moisten first to prevent dusting. Store in an area without drain or sewer access. Separated from acids. SEE IMPORTANT INFORMATION ON BACK ICSC: 1602 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 C10-13 ALKYLBENZENESULFONIC ACID, SODIUM SALT ICSC: 1602 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: SOLID IN VARIOUS FORMS PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing toxic and corrosive fumes including sulfur oxides . Reacts with acids producing toxic and corrosive fumes including sulfur oxides . 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: The substance is irritating to the skin and the respiratory tract and is corrosive to the eyes. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 637°C Melting point: 277°C Relative density (water = 1): 1.06 Solubility in water, g/100 ml at 20°C: 25 Vapour pressure, Pa at °C: negligible Octanol/water partition coefficient as log Pow: 3.32 ENVIRONMENTAL DATA The substance is toxic to aquatic organisms. N O T E S The substance is usually sold as a 50% concentrate. The linear alkyl chain has typically 10 to 13 carbon atoms, approximately in the following mole ratio (percentage of alkyl chain lenght relative to the total component) C10:C11:C12:C13=13:30:33:24. The formulations of linear alkylbenzene sulfonates available in US contain also 0-5% C14 component ADDITIONAL INFORMATION ICSC: 1602 C10-13 ALKYLBENZENESULFONIC ACID, SODIUM SALT (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.