International Chemical Safety Cards DODECANOYL PEROXIDE ICSC: 0264 Lauroyl peroxide Peroxide, didodecanoyl bis(1-Oxododecyl)peroxide (C11H23CO)2O2 Molecular mass: 398.7 ICSC #    0264 CAS #     105-74-8 RTECS # OF2625000 UN #        3106 EC #         617-003-00-3 March 24, 1999 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Flammable. NO open flames, NO sparks, and NO smoking. Water in large amounts, water spray. EXPLOSION Risk of fire and explosion on contact with combustible substances, reducing agents and at warming. Prevent warming above 25 °C. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Redness. Pain. Safety goggles, or face shield. 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. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area in case of large spills! Consult an expert! Remove all ignition sources. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents. (Extra personal protection: P2 filter respirator for harmful particles). Fireproof. Separated from combustible and reducing substances. Cool. O symbol R: 7 S: 2-3/7-14-36/37/39 UN Hazard Class: 5.2 SEE IMPORTANT INFORMATION ON BACK ICSC: 0264 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 DODECANOYL PEROXIDE ICSC: 0264 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE POWDER OR SOLID IN VARIOUS FORMS. PHYSICAL DANGERS: CHEMICAL DANGERS: Heating may cause violent combustion or explosion. The substance is a strong oxidant and reacts with combustible and reducing materials causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: The aerosol irritates the eyes, the skin and the respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point: 49-57°C Density: 0.9 g/cm3 Solubility in water: none Auto-ignition temperature: 112°C ENVIRONMENTAL DATA N O T E S Laurox W 40, Alperox, LYP97 are trade names. Other UN number for water solution (<42%): 3109. Transport Emergency Card: TEC (R)-52G2A NFPA Code: H0; F2; R3; OX ADDITIONAL INFORMATION ICSC: 0264 DODECANOYL PEROXIDE (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.