Product Identification

Product Name

Cobalt hydroxide

Synonyms

Cobalt dihydroxide
Cobaltous hydroxide

CAS

21041-93-0

Formula

CoH2O2

Molecular Weight

92.95

EINECS

244-166-4

RTECS

GG0904500

RTECS Class

Tumorigen

Merck

13,2467

Beilstein/Gmelin

8813 (G)

Physical and Chemical Properties

Appearance

Blue-green crystals

Solubility in water

Slightly soluble

Density

3.597 g/cm3 (15 C)

Usage

Production of co compds.

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water.

Eyes

In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Handling and Storage

Storage

Keep tightly closed. Store in a cool dry place. Store under nitrogen.

Hazards Identification

Inhalation

Material is irritating to mucous membranes and upper respiratory tract.

Hazards

Emits toxic fumes under fire conditions.

EC Risk Phrase

20/21/22 36/37/38

EC Safety Phrase

26 37/39

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles.

Respirators

Government approved respirator.

Exposure Effects

Harmful. Harmful by inhalation, in contact with skin and if swallowed. Irritating to eyes, respiratory system and skin.

Exposure limit(s)

0.02 mg/m3 TLV

Poison Class

2

Fire Fighting Measures

Fire Fighting

Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Accidental Release Measures

Small spills/leaks

Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Incompatibilities

Strong oxidizing agents.

Decomposition

Nature of decomposition products not known.