Product Identification

Product Name

Argon

CAS

7440-37-1

Formula

Ar

Molecular Weight

39.94

EINECS

231-147-0

RTECS

CF2300000

RTECS Class

Other

Merck

12,820

Beilstein/Gmelin

821 (G)

Physical and Chemical Properties

Appearance

Colorless odorless inert cryogenic liquid.

Solubility in water

3.4 g/100 ml

Melting Point

-189.2

Boiling Point

-185.86

Vapor Pressure

10322 (-150 C)

Density

0.001633 g/cm3 (20 C)

Heat Of Vaporization

6.6 kJ/mol

Usage

Gas as shield in gas metal-arc welding, in metal processing.

Vapor Density

1.378

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water.

Eyes

Immediately flush with running water for at least 20 minutes.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Inhalation

Vapors may cause dizziness or asphyxiation without warning. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.

Skin

Contact with liquid may cause frostbite.

Eyes

Pain. Blurred vision. Severe deep burns.

Ingestion

Not likely to be a routed of exposure.

Hazards

Containers may explode when heated. Ruptured cylinders may rocket.

UN (DOT)

1951

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Exposure Effects

The toxological properties of this substance have not been fully investigated.

Poison Class

-

Fire Fighting Measures

Fire Fighting

Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Do not use water on material itself. Apply water from as far a distance as possible.

Fire Potential

Non-flammable gas.

Accidental Release Measures

Small spills/leaks

Make no contact with the spilled material. Stop leak if you can do it without risk. Do not direct water at spill or source of leak. If possible, turn leaking containers so that gas escapes rather than liquid. Allow substance to evaporate. Ventilate the area.

Stability and Reactivity

Incompatibilities

None.

Stability

Stable at normal temperatures and pressures.

Decomposition

None.

Transport Information

UN Number

1951

Hazard Class

2.2