SECTION1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING

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1 The recipient of this Safety Data Sheet is urged to study it carefully to become aware of hazards, if any, of the product involved. In the interest of safety you should (1) notify your employees, agents and contractors of the information on this sheet,(2) furnish a copy to each of your customers for the product, and (3) request your customers to inform their employees and customers as well. SECTION1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING Product name: Chemical Name: Tris(2,4-di-tert-butylphenyl)phosphite Synonyms: Garbefix OS 240 Molecular formula: Product Use Description: Chemical nature: C42H63O3P Antioxidant Aryl phosphite Company: Gulf Stabilizers Industries PO Box Jubail City Kingdom of Saudi Arabia Tel: +966 (0) Fax: +966 (0) Chemtura Corporation NAVIGA BUSINESS PARK, NIEUWE WEG 1, HAVEN 1053 ZWIJNDRECHT, ANTWERP B Belgium Emergency telephone: Prepared by: Emergency Phone Number +966 (0) (0) For additional emergency telephone numbers see section 16 of the Safety Data Sheet Product Safety Department (US (EU) +44 (0) MSDSRequest@chemtura.com SECTION 2. HAZARDS IDENTIFICATION Risk advice to man and the environment Not expected to be a hazard in normal industrial use. May form explosive dust-air mixture. SECTION 3.COMPOSITION/INFORMATION ON INGREDIENTS Hazardous components Chemical Name CAS-No. EINECS-No. Classification Concentration [%] Remarks : No dangerous ingredients according to Directive 2001/58/EC 1 of 7

2 SECTION 4. FIRST AID MEASURES First aid procedures Inhalation : Remove to fresh air. Get medical attention. Skin contact : Wash off with warm water and soap. If skin irritation occurs, get medical advice/attention. Eye contact : Hold eyelids apart and flush eyes with plenty of water for at least 15 minutes. Get medical attention. Ingestion : If conscious, make the victim drink the following: Drink 1 or 2 glasses of water. Get medical attention immediately. Notes to physician Symptoms None known. SECTION 5. FIRE-FIGHTING MEASURES Flammable properties Flash point : 225 C Protective equipment and precautions for firefighters Suitable extinguishing media : All conventional media are suitable. Hazardous decomposition products : Type: Hazardous combustion products Oxides of phosphorus Phosphorus trihydride (phosphine) Type: Hazardous decomposition products formed under fire conditions. trihydride (phosphine) Oxides of phosphorus Phosphorus Further information : In the event of fire, wear self-contained breathing apparatus. Wear personal protective equipment. Specific hazards during fire fighting : Burning produces obnoxious and toxic fumes. Thermal decomposition can lead to release of irritating gases and vapours. May form explosive dust-air mixture. SECTION 6. ACCIDENTAL RELEASE MEASURES Personal precautions : For personal protection see section 8. Environmental precautions : Avoid release to the environment. 2 of 7

3 Additional advice : Remove all sources of ignition. Use personal protective equipment. Sweep up and shovel into suitable containers for disposal. Keep in properly labelled containers. Avoid creating dust. SECTION 7. HANDLING AND STORAGE Handling Advice on safe handling : Use personal protective equipment as required. Avoid contact with skin, eyes and clothing. Avoid breathing dust. Avoid repeated exposure. Avoid prolonged contact. Avoid creating dust. Take precautionary measures against static discharges. Use only in well-ventilated areas. Keep away from open flames, hot surfaces and sources of ignition. Ensure all equipment is electrically grounded before beginning transfer operations. Storage Requirements for storage areas and containers : Keep in a dry, cool and well-ventilated place. Keep container tightly closed. Keep away from flames and sparks. Keep away from heat and sources of ignition. Other data : Stable under normal conditions. SECTION 8. EXPOSURE CONTROLS / PERSONAL PROTECTION Exposure Guidelines Components with workplace control parameters Components / CAS-No. Value - Basis - Update Control parameters Further information Engineering measures Engineering measures : Use with local exhaust ventilation. Adequate general ventilation is recommended when handling to control airborne levels. Use mechanical ventilation for general area control. Personal protective equipment Eye protection : Safety glasses with side-shields or Safety goggles Hand protection : PVC or other plastic material gloves 3 of 7

4 Skin and body protection : For personal hygiene purposes, use adequate clothing to prevent skin contact. Respiratory protection : Respirator must be worn if exposed to dust. Respirator with a dust filter Hygiene measures : Wash thoroughly after handling. Wash contaminated clothing before reuse. SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Appearance Form : powder Colour : white to off-white Odour : odourless Safety data Flash point : 225 C Melting point/range : C Vapour pressure : 10E-10 at 20 C Specific Gravity : 1,04 Water solubility : practically insoluble SECTION 10. STABILITY AND REACTIVITY Materials to avoid : Strong oxidizing agents Reducing agents Strong bases Hazardous decomposition products : Type: Hazardous combustion products Oxides of phosphorus Phosphorus trihydride (phosphine) Type: Hazardous decomposition products formed under fire conditions. trihydride (phosphine) Oxides of phosphorus Phosphorus 4 of 7

5 Hazardous reactions : No dangerous reaction known under conditions of normal use. Note : Stable under normal conditions. SECTION 11. TOXICOLOGICAL INFORMATION Acute oral toxicity : LD50 rat Dose: > mg/kg Acute dermal toxicity : LD50 rat Dose: mg/kg Skin irritation : rabbit Result: No skin irritation Eye irritation : rabbit Result: No eye irritation Sensitisation : guinea pig Result: Did not cause sensitization on laboratory animals. SECTION 12. ECOLOGICAL INFORMATION Biodegradability : Not readily biodegradable. Bioaccumulation : Bioconcentration factor (BCF): < 17 Bioaccumulation is unlikely. Acute Fish toxicity : LC50 Species: Fish Concentration: > 100,00 mg/l Exposure time: 96 h Toxicity to bacteria : IC50 Species: Bacteria Dose: > 100,00 mg/l Exposure time: 3 h Avoid release to the environment. SECTION 13. DISPOSAL CONSIDERATIONS Further information : Dispose of in accordance with the European Directives on waste and hazardous waste. SECTION 14. TRANSPORT INFORMATION ADR/RID Not dangerous goods 5 of 7

6 IATA Not dangerous goods IMDG Not dangerous goods SECTION 15. REGULATORY INFORMATION Labelling according to EC Directives The product does not need to be labelled in accordance with EC directives or respective national laws. The components of this product are reported in the following inventories: TSCA DSL EINECS AICS ENCS KECI PICCS IECSC SECTION 16. OTHER INFORMATION Further information Carechem24 International Worldwide Coverage - Chemtura Corporation Emergency Phone Number Europe: All European Countries +44 (0) Asia Pacific: Australia, New Zealand China Japan Indonesia Malaysia Thailand Hong Kong, Singapore, Sri Lanka, Taiwan, Philippines Korea Vietnam India Pakistan Bangladesh Middle East: Arabic speaking countries All other countries +44 (0) of 7

7 Africa: Arabic speaking countries All other countries +44 (0) Latin America: All +44 (0) The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text. Since the use of this information and of these opinions and the conditions of use of this product are not within the control of the seller, it is the user's obligation to determine the conditions of safe use of the products. 7 of 7