Methane, Compressed

Hazard statements (CLP)

H220, H280

Code

Statements

H220

Extremely flammable gas

OSHA HCS Classification

Physical, Flammable Gases, 1 Physical, Gases Under Pressure, Compressed Gas

Signal word

DANGER

Hazard statements

H220 - Extremely flammable gas H280 - Contains gas under pressure; may explode if heated OSHA-H01 - MAY DISPLACE OXYGEN AND CAUSE RAPID SUFFOCATION. CGA-HG04 - MAY FORM EXPLOSIVE MIXTURES WITH AIR.

Precautionary statements

P202 - Do not handle until all safety precautions have been read and understood. P210 - Keep away from heat/sparks/open flames/hot surfaces. No smoking P271 - Use and store only outdoors or in a well-ventilated area. P377 - Leaking gas fire: Do not extinguish unless leak can be stopped safely. P381 - Eliminate all ignition sources if safe to do so. P304+340 - IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. SDS Page 2 of 6 P313 - Get medical advice/attention. CGA-PG05 - Use a back flow preventive device in the piping. CGA-PG10 - Use only with equipment rated for cylinder pressure. CGA-PG06 - Close valve after each use and when empty. CGA-PG11 - Never put cylinders into unventilated areas of passenger vehicles. CGA-PG02 - Protect from sunlight when ambient temperature exceeds 52 °C (125 °F).

Principle Routes of Exposure

Inhalation; Target Organs: Respiratory system; Inhalation: Methane is a simple asphyxiant. Exposure to high concentrations of this gas may exclude an adequate supply of oxygen. Oxygen levels should be maintained at greater than 19.5% at normal atmospheric pressure. Effects of oxygen deficiency resulting from simple asphyxiants may include: rapid breathing, diminished mental alertness, impaired muscular coordination, faulty judgment, depression of all sensations, emotional instability and fatigue. As asphyxiation progresses, nausea, vomiting, prostration and loss of consciousness may result, eventually leading to convulsions, coma and death. Oxygen deficiency during pregnancy has produced developmental abnormalities in humans and experimental animals. Inhalation of high methane concentrations may cause central nervous system depression with dizziness, disorientation, in-coordination, nausea, and narcosis. High concentrations may also cause cardiac sensitization resulting in irregular heartbeat and may make the individual more susceptible to cardiac effects of substances such as epinephrine and adrenaline. Skin Contact: Non-irritating. Contact with rapidly expanding gas near the point of release may cause frostbite with redness, skin color change to gray or white, and blistering. Eye Contact: Non-irritating. Contact with rapidly expanding gas near the point of release may cause frostbite. NFPA: Health = 0, Fire = 4, Reactivity = 0, Specific Hazard = n/a HMIS III: Health = 0, Fire = 4, Physical Hazard = 3 HMIS PPE: B - Safety Glasses, Gloves 0 4 0 3 B