oxygen

CAS 7782-44-7 O₂ MW 32.0000 Danger
Flame Over Circle Flame Over Circle
Gas Cylinder Gas Cylinder
Exclamation Mark Exclamation Mark
Health Hazard Health Hazard
Emergency: 911 | Poison Control: 1-800-222-1222

Hazard Statements

CodeStatementHazard Class
H270 May cause or intensify fire; oxidizer Oxidizing gases
H280 Contains gas under pressure; may explode if heated Gases under pressure
H335 May cause respiratory irritation Specific target organ toxicity, single exposure; Respiratory tract irritation
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity

Precautionary Statements

CodeStatement
P203 Obtain, read and follow all safety instructions before use.
P220 Keep away from clothing and other combustible materials.
P244 Keep valves and fittings free from oil and grease.
P261 Avoid breathing dust/fume/gas/mist/vapors/spray.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P318 if exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P370+P376 in case of fire: Stop leak if safe to do so.
P403 Store in a well-ventilated place.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P410+P403 Protect from sunlight. Store in a well-ventilated place.
P501 Dispose of contents/container to ...

Physical Properties

Colorless, odorless and tasteless gas.

Boiling Point-297.3°F
Specific Gravity1.14 at -297.4°F

Data Sources

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

See something wrong? Report a data issue.