Product Identification

Product Name

Tungsten(VI) oxide

Synonyms

Tungsten blue
Tungsten oxide
Tungsten(Vi) oxide
Tungstic acid anhydride
Tungstic anhydride
Tungstic oxide

CAS

1314-35-8

Formula

O3W

Molecular Weight

231.84

EINECS

215-231-4

RTECS

YO7760000

RTECS Class

Other

Merck

12,9947

Beilstein/Gmelin

110461 (G)

Physical and Chemical Properties

Appearance

Canary yellow, heavy powder; dark orange when heated.

Solubility in water

Insoluble

Melting Point

1473

Density

7.16 g/cm3

Usage

Manufacture of tungstates which are used for x-ray screens and for fireproofing fabrics.

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Keep container tightly closed.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

Exposure Effects

Prolonged or repeated skin contact may cause dermatitis. May cause lung damage.

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities

Chlorine, Chlorine trifluoride, Lithium.

Stability

Stable under normal temperatures and pressures.

Decomposition

None.