SAFETY DATA SHEET PRODUCT NAME Sulfur hexafluoride 1.2 RELEVANT IDENTIFIED USES OF THE SUBSTANCE OR MIXTURE AND USES ADVISED AGAINST :

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1 SULFUR HEXAFLUORIDE PAGE NO. 1 of 10 1 PRODUCT AND COMPANY IDENTIFICATION 1.1 PRODUCT IDENTIFIER : PRODUCT NAME Sulfur hexafluoride SYNONYMS Sulfur fluoride (SF6), (OC-6-11)-; Sulfur fluoride (SF6); Sulfur hexafluoride; Sulfur fluoride CAS NUMBER CHEMICAL FORMULA SF6 1.2 RELEVANT IDENTIFIED USES OF THE SUBSTANCE OR MIXTURE AND USES ADVISED AGAINST : RELEVANT IDENTIFIED USES Industrial use. Use as directed. 1.3 DETAILS OF THE SUPPLIER : COMPANY IDENTIFICATION Sharjah Oxygen Company 1.4 EMERGENCY TELEPHONE NUMBER : EMERGENCY PHONE NUMBER(S) HAZARD(S) IDENTIFICATION 2.1 CLASSIFICATION OF SUBSTANCE OR MIXTURE : Sulfur hexafluoride 100% 2.2 LABEL ELEMENTS : LABELING PICTOGRAMS

2 PAGE NO. 2 of SIGNAL WORD Warning HAZARD STATEMENT PRECAUTIONARY STATEMENT Contains gas under pressure; may explode if heated. May cause frostbite. May displace oxygen and cause rapid suffocation. Read and follow all Safety Data Sheets (SDSs) before use. Read label before use. Keep out of reach of children. If medical advice is needed, have product container or label at hand. Close valve after each use and when empty. Use equipment rated for cylinder pressure. Do not open valve until connected to equipment prepared for use. Use a back flow preventive device in the piping. Use only equipment of compatible materials of construction. Always keep container in upright position. 2.3 OTHER HAZARDS : In addition to any other important health or physical hazards, this product may displace oxygen and cause rapid suffocation. 3 COMPOSITION/INFORMATION ON INGREDIENTS 3.1 SUBSTANCES : CHEMICAL IDENTITY OF THE SUBSTANCE Substance CAS NO IMPURITIES AND STABILIZING ADDITIVES WHICH ARE THEMSELVES CLASSIFIED AND WHICH CONTRIBUTE TO THE CLASSIFICATION OF THE SUBSTANCE Contains no other components or impurities which will influence the classification of the product.

3 PAGE NO. 3 of MIXTURES : Sulfur hexafluoride 100% 4 FIRST AID MEASURES 4.1 DESCRIPTION OF FIRST AID MEASURES : INHALATION SKIN CONTACT EYE CONTACT INGESTION In high concentrations may cause asphyxiation. Symptoms may include loss of mobility/consciousness. Victim may not be aware of asphyxiation. Remove victim to uncontaminated area wearing selfcontained breathing apparatus. Keep victim warm and rested. Call a doctor. Apply artificial respiration if breathing stopped. In case of frostbite spray with water for at least 15 minutes. Apply a sterile dressing. Immediately flush eyes thoroughly with water for at least 15 minutes. Obtain medical assistance. Ingestion is not considered a potential route of exposure. 4.2 MOST IMPORTANT SYMPTOMS AND EFFECTS BOTH ACUTE AND DELAYED : ACUTE SYMPTOMS AND EFFECTS DELAYED SYMPTOMS AND EFFECTS No additional information available No additional information available 4.3 INDICATION OF ANY IMMEDIATE MEDICAL ATTENTION AND SPECIAL TREATMENT NEEDED : Treat symptomatically. Contact poison treatment specialist immediately if large quantities have been ingested or inhaled. 5 FIRE FIGHTING MEASURES 5.1 EXTINGUISHING MEDIA :

4 PAGE NO. 4 of SUITABLE EXTINGUISHING MEDIA All known extinguishants can be used. 5.2 SPECIFIC HAZARDS ARISING FROM THE CHEMICAL : DURING FIRE Contains gas under pressure. In a fire or if heated, a pressure increase will occur and the container may burst or explode. 5.3 ADVICE FOR FIRE FIGHTERS : FIRE FIGHTING INSTRUCTIONS PROTECTION DURING FIRE FIGHTING SPECIAL PROTECTIVE EQUIPMENT FOR FIRE FIGHTERS If possible stop flow of product. Move away from the container and cool with water from a protected position. Compressed gas: asphyxiant. Suffocation hazard by lack of oxygen. Use self-contained breathing apparatus and chemically protective clothing. 6 ACCIDENTAL RELEASE MEASURES 6.1 PERSONAL PRECAUTIONS, PROTECTIVE EQUIPMENT AND EMERGENCY PROCEDURES : GENERAL MEASURES PROTECTIVE EQUIPMENT FOR EMERGENCY RESPONDERS Evacuate area. Ensure adequate air ventilation. Wear self-contained breathing Apparatus when entering area unless atmosphere is proved to be safe. 6.2 ENVIRONMENTAL PRECAUTIONS : Try to stop release. Prevent from entering sewers, basements and work pits, or any place where its accumulation can be dangerous. 6.3 METHODS AND MATERIAL FOR CONTAINMENT AND CLEANING UP : Ventilate area. 7 HANDLING AND STORAGE

5 PAGE NO. 5 of PRECAUTION FOR SAFE HANDLING : NA 7.2 CONDITION FOR SAFE STORAGE, INCLUDING ANY INCOMPATIBILITIES : SAFE STORAGE REQUIREMENTS Always keep container below 50 C in a well ventilated place. Cylinders should be stored upright, with valve protection cap in place, and firmly secured to prevent falling or being knocked over. 8 EXPOSURE CONTROLS/PERSONAL PROTECTION 8.1 CONTROL PARAMETERS : OCCUPATIONAL EXPOSURE : OSHA PEL Z2 (United States, 11/2006). TWA: 2.5 mg/m³ 8 hours. Form: Dust ACGIH TLV (United States, 3/2012). TWA: 5970 mg/m³ 8 hours. TWA: 1000 ppm 8 hours. NIOSH REL (United States, 1/2013). TWA: 6000 mg/m³ 10 hours. TWA: 1000 ppm 10 hours. OSHA PEL (United States, 6/2010). TWA: 6000 mg/m³ 8 hours. TWA: 1000 ppm 8 hours. OSHA PEL 1989 (United States, 3/1989). TWA: 6000 mg/m³ 8 hours. TWA: 1000 ppm 8 hours. 8.2 EXPOSURE CONTROLS : APPROPRIATE ENGINEERING CONTROLS Good general ventilation should be sufficient to control worker exposure to airborne contaminants.

6 PAGE NO. 6 of INDIVIDUAL PROTECTION MEASURES, SUCH AS PERSONAL PROTECTIVE EQUIPMENT : RESPIRATORY PROTECTION Use a properly fitted, air-purifying or air-fed respirator complying with an approved standard if a risk assessment indicates this is necessary. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product and the safe working limits of the selected respirator HAND PROTECTION Chemical-resistant, impervious gloves complying with an approved standard should be worn at all times when handling chemical products if a risk assessment indicates this is necessary. Considering the parameters specified by the glove manufacturer, check during use that the gloves are still retaining their protective properties. It should be noted that the time to breakthrough for any glove material may be different for different glove manufacturers. In the case of mixtures, consisting of several substances, the protection time of the gloves cannot be accurately estimated EYE PROTECTION Safety eyewear complying with an approved standard should be used when a risk assessment indicates this is necessary to avoid exposure to liquid splashes, mists, gases or dusts. If contact is possible, the following protection should be worn, unless the assessment indicates a higher degree of protection: safety glasses with side- shields SKIN PROTECTION Personal protective equipment for the body should be selected based on the task being performed and the risks involved and should be approved by a specialist before handling this product.

7 PAGE NO. 7 of ENVIRONMENTAL EXPOSURE CONTROLS Emissions from ventilation or work process equipment should be checked to ensure they comply with the requirements of environmental protection legislation. In some cases, fume scrubbers, filters or engineering modifications to the process equipment will be necessary to reduce emissions to acceptable levels. 9 PHYSICAL AND CHEMICAL PROPERTIES 9.1 INFORMATION ON BASIC PHYSICAL AND CHEMICAL PROPERTIES : PHYSICAL STATE APPEARANCE Gas MOLECULAR MASS 146 g/mole COLOR Colourless Gas (Note: Shipped as Liquefied Compressed Gas) ODOR No odour warning properties ODOR THRESHOLD Not available PH Not available RELATIVE EVAPORATION RATE Not applicable MELTING POINT O C FREEZING POINT O C BOILING POINT -64(s) O C FLASH POINT Not available CRITICAL TEMPERATURE 45.5 O C AUTO-IGNITION TEMPERATURE DECOMPOSITION TEMPERATURE Not available Not available FLAMMABILITY (SOLID/GAS) Not available

8 PAGE NO. 8 of VAPOR PRESSURE 21 Barg CRITICAL PRESSURE Not known RELATIVE VAPOR DENSITY Not applicable RELATIVE DENSITY Not applicable SPECIFIC GRAVITY/DENSITY Not applicable RELATIVE GAS DENSITY 5 (air=1) SOLUBILITY 34mg/l 10 STABILITY AND REACTIVITY 10.1 REACTIVITY Stable under normal conditions CHEMICAL STABILITY The product is stable POSSIBILITY OF HAZARDOUS REACTION No hazardous reaction under normal conditions of storage and use CONDITIONS TO AVOID No specific data INCOMPATIBLE MATERIALS Under normal conditions of storage and use, hazardous decomposition products should not be produced. 11 TOXICOLOGICAL INFORMATION 11.1 INFORMATION ON TOXICOLOGICAL EFFECTS : ACUTE TOXICITY Not available CORROSION/ IRRITATION Not available RESPIRATORY/SKIN SENSITIZATION SPECIFIC TARGET ORGAN TOXICITY (SINGLE EXPOSURE) Not available Not available

9 PAGE NO. 9 of MUTAGENICITY Not available CARCINOGENICITY Not available REPRODUCTIVE TOXICITY Not available CHRONIC EFFECTS FROM SHORT TERM AND LONG TERM EXPOSURE Not available 12 ECOLOGICAL INFORMATION 12.1 TOXICITY No known toxicological effects from this product PERSISTENCE AND DEGRADABILITY Not Available 12.3 OTHER ADVERSE EFFECTS : GLOBAL WARMING POTENTIAL (GWP) Sulfur hexafluoride (CO2=1) 13 DISPOSAL CONSIDERATIONS 13.1 WASTE TREATMENT METHODS : DISPOSAL METHODS Avoid discharge to atmosphere. Do not discharge into any place where its accumulation could be dangerous. Contact supplier if guidance is required. 14 TRANSPORT INFORMATION 14.1 ROAD (ADR) : UN NUMBER UN PROPER SHIPPING NAME CLASS CLASSIFICATION CODE Sulphur hexafluoride, Liquefied compressed Gas 2A

10 PAGE NO. 10 of PACKING GROUP : LABELS Label 2.2: nonflammable nontoxic gas ENVIRONMENTAL HAZARDS : ENVIRONMENTAL HAZARDOUS SUBTANCE MARK None SPECIAL PRECAUTIONS FOR USER : SPECIAL PROVISIONS Avoid transport on vehicles where the load space is not separated from the driver's compartment. Ensure vehicle driver is aware of the potential hazards of the load and knows what to do in the event of an accident or an emergency. Before transporting product containers ensure that they are firmly secured and the cylinder valve is closed and not leaking, valve outlet cap nut or plug (where provided) is correctly fitted, valve protection device (where provided) is correctly fitted, there is adequate ventilation, compliance with applicable regulations. 15 REGULATORY INFORMATION 15.1 SAFETY, HEALTH AND ENVIRONMENTAL REGULATIONS/LEGISLATION SPECIFIC FOR THE SUBSTANCE OR MIXTURE Not classified as dangerous preparation. 16 OTHER INFORMATION : Ensure all national/local regulations are observed. Asphyxiant in high concentrations. Keep container in well ventilated place. Do not breathe the gas. The hazard of asphyxiation is often overlooked and must be stressed during operator training. Contact with liquid may cause cold burns/frost bite. Users of breathing apparatus must be trained.