Product Identification

Product Name

Cobalt (II) acetate

Synonyms

Bis(acetato)cobalt
Cobalt acetate
Cobalt diacetate
Cobalt(2+) acetate
Cobalt(II) acetate

CAS

71-48-7

Formula

C4H6CoO4

Molecular Weight

177.02

EINECS

200-755-8

RTECS

AG3150000

RTECS Class

Tumorigen; Drug; Mutagen

Merck

12,2494

Beilstein/Gmelin

3692529

Beilstein Reference

4-02-00-00094

Physical and Chemical Properties

Appearance

Red-violet crystalline solid. Vinegar-like odor.

Solubility in water

readily soluble

Melting Point

297-299

Density

1.7755 g/cm3 (20 C)

Heat Of Vaporization

Usage

Foam stabilizers for malt beverages. Former use.

First Aid Measures

Ingestion

Give large amounts of water; induce vomiting.

Inhalation

Move to fresh air; if breathing has stopped, begin artificial respiration.

Skin

Wash with soap and water.

Eyes

Flush with water for at least 15 min.

Handling and Storage

Storage

Cool, dry location. Tightly sealed container.

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

An interstitial fibrotic pulmonary process has been described among hard metal workers and diamond polishers.

Skin

May cause irritation.

Eyes

May cause severe irritation and possible corneal damage.

Ingestion

Ingestion or inhalation of cobalt causes nausea, vomiting, diarrhea, and colicky abdominal pain.

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

NIOSH approved respirator with dust/mist filter.

Exposure Effects

Administration of cobalt chloride to pregnant rats in doses up to 100 mg/kg/day did not produce teratogenicity or fetotoxicity. <br>CASE REPORT - A 31-year-old woman with severe cobalt-induced pulmonary fibrosis delivered a normal full term infant. Throughout the pregnancy, supplemental oxygen was required during exercise due to deterioration of respiratory capacity. Inhalation exposureor respiratory disease is present.

Exposure limit(s)

IDHL: 20 mg/m3

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.

Fire Potential

Not flammable tetrahydrate

Accidental Release Measures

Small spills/leaks

Sweep up and place in a suitable clean, dry containers for reclamation or disposal. Keep unnecessary people away.

Stability and Reactivity

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Toxic and hazardous fumes of cobalt and oxides of carbon.

Combustion Products

Toxic cobalt oxide fumes may form in fire.