Methane

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# SAFETY DATA SHEET (cont.) ## SECTION 2: Hazards identification (cont.) <table><tr><th colspan="2">Hazard statement(s)</th></tr><tr><td>H220</td><td>Extremely flammable gas.</td></tr><tr><td>H280</td><td>Contains gas under pressure; may explode if heated. May displace oxygen and cause rapid suffocation.</td></tr><tr><td>Precautionary statement(s)</td><td></td></tr><tr><td>P210</td><td>Keep away from heat/ sparks/ open flames/ hot surfaces. No smoking.</td></tr><tr><td>P377</td><td>Leaking gas fire: Do not extinguish, unless leak can be stopped safely.</td></tr><tr><td>P381</td><td>Eliminate all ignition sources if safe to do so.</td></tr><tr><td>P410 + P403</td><td>Protect from sunlight. Store in a well-ventilated place.</td></tr></table> 2.3 Hazards not otherwise classified (HNOC) or not covered by GHS - none ## SECTION 3: Composition/information on ingredients ## 3.1 Substances Formula : CH₄ Molecular weight : 16.04 g/mol CAS-No. : 74-82-8 EC-No. : 200-812-7 Index-No. : 601-001-00-4 <table><tr><th>Component</th><th>Classification</th><th>Concentration</th></tr><tr><td>Methane</td><td></td><td></td></tr><tr><td></td><td>Flam. Gas 1; Press. Gas Compr. Gas; SA ; H220, H280,</td><td>&lt; = 100 %</td></tr></table> For the full text of the H-Statements mentioned in this Section, see Section 16. ## SECTION 4: First aid measures ## 4.1 Description of first-aid measures ## General advice Consult a physician. Show this material safety data sheet to the doctor in attendance. Move out of dangerous area. ## If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Flush eyes with water as a precaution. ## If swallowed Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Aldrich 463035 The life science business of Mer…

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# What are the potential health effects of methane? (cont.) ## What are the stability and reactivity hazards of methane? (cont.) - Conditions to Avoid: Open flames, sparks, static discharge, heat and other ignition sources. - Incompatible Materials: Increased risk of fire and explosion on contact with: strong oxidizing agents (e.g. perchloric acid), halogens (e.g. chlorine). Not corrosive to: aluminum alloys, carbon steel. - Hazardous Decomposition Products: None known. - Possibility of Hazardous Reactions: None known. ## What are unintentional release measures for methane? Personal Precautions: Evacuate the area immediately. Isolate the hazard area. Keep out unnecessary and unprotected personnel. Eliminate all ignition sources. Use grounded, explosion-proof equipment. Methods for Containment and Clean-up: Stop or reduce leak if safe to do so. Knock down vapour with fog or fine water spray. Ventilate the area to prevent the gas from accumulating, especially in confined spaces. ## What handling and storage practices should be used when working with methane? Handling: Eliminate heat and ignition sources such as sparks, open flames, hot surfaces and static discharge. Post "No Smoking" signs. If used in a confined space, check for oxygen deficiency before worker entry and during work. Secure cylinder in an up-right position. Protect cylinders from damage. Use a suitable hand truck to move cylinders; do not drag, roll, slide, or drop. Prevent unintentional contact with incompatible chemicals. Additional information for handling refrigerated liquefied methane: ensure that cryogen dewar can withstand extremely low temperature. Cool the receiving container prior to transfer. Slowly fill containers or put objects into liquefied gas to minimize boiling and splashing. Do not overfill portable dewars. Storage: Store in an area that is: cool, well-ventilated, temperature-controlled, out of direct sunlight and away from heat and ignition sources, clear of combustible…

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# What are the potential health effects of methane? (cont.) ## What Personal Protective Equipment (PPE) is needed when working with methane? (cont.) (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode; or Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus. APF = Assigned Protection Factor Recommendations apply only to National Institute for Occupational Safety and Health (NIOSH) approved respirators. Refer to the NIOSH Pocket Guide to Chemical Hazards for more information. Fact sheet last revised: 2023-02-07 ## Disclaimer Although every effort is made to ensure the accuracy, currency and completeness of the information, CCOHS does not guarantee, warrant, represent or undertake that the information provided is correct, accurate or current. CCOHS is not liable for any loss, claim, or demand arising directly or indirectly from any use or reliance upon the information. Methane CCOHS

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# What are the potential health effects of methane? (cont.) ## What handling and storage practices should be used when working with methane? (cont.) ACGIH® TLV® - TWA: Minimal oxygen content required. (D) (EX) Exposure Guideline Comments: TLV® = Threshold Limit Value. TWA = Time-Weighted Average. (D) Simple asphyxiant. (EX) Explosion hazard: The substance is a flammable asphyxiant or excursions above the TLV® could approach 10% of the lower explosion limit. Adapted from: 2022 TLVs® and BEls® - Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices. Cincinnati: American Conference of Governmental Industrial Hygienists (ACGIH) NOTE: In many (but not all) Canadian jurisdictions, the exposure limits are similar to the ACGIH® TLVs®. Since legislation varies by jurisdiction, contact your local jurisdiction for exact details. A list is available in the OSH Answers on Canadian Governmental Occupational Health & Safety Departments. A list of which acts and regulations that cover exposure limits to chemical and biological agents is available on our website. Please note that while you can see the list of legislation for free, you will need a subscription to view the actual documentation. ## What are the engineering controls for methane? Engineering Controls: Use local exhaust ventilation, if general ventilation is not adequate to control amount in the air. Use non-sparking ventilation systems, approved explosion-proof equipment and intrinsically safe electrical systems in areas where this product is used and stored. Do not allow product to accumulate in the air in work or storage areas, or in confined spaces. For large scale use of this product: use stringent control measures such as process enclosure to prevent product release into the workplace. ## What Personal Protective Equipment (PPE) is needed when working with methane? Eye/Face Protection: Wear chemical safety goggles and face shield when contact is possible. Skin …

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# SAFETY DATA SHEET (cont.) ## If swallowed (cont.) - 4.2 Most important symptoms and effects, both acute and delayed The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11 - 4.3 Indication of any immediate medical attention and special treatment needed No data available ## SECTION 5: Firefighting measures - 5.1 Extinguishing media - Suitable extinguishing media - Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. - 5.2 Special hazards arising from the substance or mixture Carbon oxides - 5.3 Advice for firefighters - Wear self-contained breathing apparatus for firefighting if necessary. - 5.4 Further information - Use water spray to cool unopened containers. ## SECTION 6: Accidental release measures - 6.1 Personal precautions, protective equipment and emergency procedures Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Beware of vapors accumulating to form explosive concentrations. Vapors can accumulate in low areas. For personal protection see section 8. - 6.2 Environmental precautions - Prevent further leakage or spillage if safe to do so. Do not let product enter drains. - 6.3 Methods and materials for containment and cleaning up Clean up promptly by sweeping or vacuum. - 6.4 Reference to other sections For disposal see section 13. ## SECTION 7: Handling and storage 7.1 Precautions for safe handling Advice on safe handling Avoid inhalation of vapor or mist. Advice on protection against fire and explosion Use explosion-proof equipment. Advice on protection against fire and explosion Keep away from sources of ignition - No smoking. Take measures to prevent the build up of electrostatic charge. Hygiene measures Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. For precautions see section 2.2. Aldrich …

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# What are the potential health effects of methane? (cont.) ## What are first aid measures for methane? (cont.) Skin Contact: Not applicable (gas). Liquefied gas: quickly remove victim from source of contamination. DO NOT attempt to rewarm the affected area on site. DO NOT rub area, flush with water, or apply direct heat. Carefully cut around clothing that sticks to the skin and remove the rest of the garment. Do not remove frozen clothing from frostbitten areas. Loosely cover the affected area with a sterile dressing. DO NOT allow victim to drink alcohol or smoke. Get medical attention immediately. Treatment is urgently required. Transport to a hospital. Eye Contact: Not applicable (gas). Liquefied gas: immediately flush with gently flowing water, occasionally lifting the upper and lower eyelids. DO NOT attempt to rewarm. Cover both eyes with a sterile dressing. DO NOT allow victim to drink alcohol or smoke. Get medical attention immediately. Treatment is urgently required. Transport to a hospital. Ingestion: Not applicable (gas). First Aid Comments: Some of the first aid procedures recommended here require advanced first aid training. All first aid procedures should be periodically reviewed by a medical professional familiar with the chemical and its conditions of use in the workplace. ## What are fire hazards and extinguishing media for methane? Flammable Properties: FLAMMABLE GAS. Can easily ignite. Can readily form an explosive mixture with air at room temperature. Can be ignited by static discharge. Suitable Extinguishing Media: Dry chemical powder and high-expansion foam. Foam manufacturers should be consulted for recommendations regarding types of foams and application rates. Unsuitable Extinguishing Media: DO NOT use carbon dioxide, low expansion foams, and direct application of water on liquefied gas. Specific Hazards Arising from the Chemical: Gas or vapour may travel a considerable distance to a source of ignition and flash back to a leak or op…

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# Methane (cont.) ## What is the WHMIS classification? (cont.) According to the Commission des normes, de l'équité, de la santé et de la sécurité du travail (CNESST), methane can be classified as: Flammable gases - Category 1 Gases under pressure - Compressed gas Simple asphyxiants - Category 1 The signal word is danger. The hazard statements are: - Extremely flammable gas - Contains gas under pressure; may explode if heated - May displace oxygen and cause rapid suffocation Please note that this classification was retrieved from the CNESST site on February 22, 2023 and was established by CNESST personnel to the best of their knowledge based on data obtained from scientific literature and it incorporates the criteria contained in the Hazardous Products Regulations (SOR/2015-17). It does not replace the supplier's classification which can be found on its Safety Data Sheet. ## What are the most important things to know about methane in an emergency? Emergency Overview: Colourless gas. Odourless. EXTREMELY FLAMMABLE GAS. Distant ignition and flashback are possible. CONFINED SPACE HAZARD. Can accumulate in hazardous amounts in low-lying areas especially inside confined spaces. COMPRESSED GAS. Contains gas under pressure. May explode if heated. ASPHYXIANT. High concentrations can displace oxygen in air and cause suffocation. May cause frostbite. Methane CCOHS

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# SAFETY DATA SHEET (cont.) ## SECTION 7: Handling and storage (cont.) - 7.2 Conditions for safe storage, including any incompatibilities - Storage conditions - Keep container tightly closed in a dry and well-ventilated place. - Contents under pressure. - Storage class - Storage class (TRGS 510): 2A: Gases - 7.3 Specific end use(s) - Apart from the uses mentioned in section 1.2 no other specific uses are stipulated ## SECTION 8: Exposure controls/personal protection ## 8.1 Control parameters Ingredients with workplace control parameters <table><tr><th>Component</th><th>CAS-No.</th><th>Value</th><th>Control parameters</th><th>Basis</th></tr><tr><td>Methane</td><td>74-82-8</td><td>TWA</td><td>0.1 mg/m3</td><td>USA. NIOSH Recommended Exposure Limits</td></tr></table> ## 8.2 Exposure controls ## Appropriate engineering controls Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. ## Personal protective equipment - Eye/face protection Face shield and safety glasses Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). ## Skin protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. Full contact Material: Fluorinated rubber Minimum layer thickness: 0.7 mm Break through time: 480 min Material tested:Vitoject® (KCL 890 / Aldrich Z677698, Size M) Splash contact Material: Nitrile rubber Minimum layer thickness: 0.4 mm Break through time: 60 min Material tested: Camatril® (KCL 730 / Aldrich Z677442, Size M) data source: KCL GmbH, D-[redacted postal code] Eichenzell, phone +49 (0)6659 [redacted postal code], e-mail [redacted email], test method: EN374 If us…