Cobalt Acetate, Cobaltous Acetate, Cobalt Diacetate, 6147-53-1

Cobalt Acetate, Cobaltous Acetate, Cobalt Diacetate, 6147-53-1

COBALT(II) ACETATE

1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

CHEMICAL STRUCTURE AND DESCRIPTION:

Cobalt(II) Acetate (Co(CH₃COO)₂) is the acetate salt of cobalt in the +2 oxidation state. The compound consists of a central cobalt ion (Co²⁺) coordinated by two acetate groups (CH₃COO⁻). Each acetate group binds to the cobalt ion through its carboxylate oxygen atoms, forming a coordination complex with octahedral geometry in its hydrated form. The cobalt ion has a 3d⁷ electron configuration with three unpaired electrons, making the compound paramagnetic. The acetate ligands can coordinate in monodentate or bridging modes, and the compound readily forms hydrates, with the tetrahydrate being the most common commercial form. The red to purple color is characteristic of cobalt(II) complexes in octahedral geometry. Cobalt(II) Acetate is highly soluble in water and ethanol, and is widely used as a catalyst in organic synthesis, as an intermediate for other cobalt compounds, and as a pigment in ceramics and glass industry.

Structural Features:

• Central cobalt ion in +2 oxidation state (3d⁷ configuration)

• Two acetate ligands in monodentate or bridging coordination modes

• Octahedral geometry (hydrated form)

• Paramagnetic due to three unpaired electrons

• Forms hydrates (tetrahydrate is common commercial form)

• Red to purple color characteristic of octahedral Co²⁺ complexes

2. PHYSICAL AND CHEMICAL PROPERTIES

3. SOLUBILITY PROFILE

4. CHEMICAL PROPERTIES AND REACTIONS

Key Chemical Reactions:

Thermal Decomposition:
3Co(CH₃COO)₂ → Co₃O₄ + 4CH₃COOCH₃ + CO₂ + H₂O

Hydroxide Precipitation:
Co(CH₃COO)₂ + 2NaOH → Co(OH)₂ ↓ + 2CH₃COONa

Acid Reaction:
Co(CH₃COO)₂ + 2HCl → CoCl₂ + 2CH₃COOH

Complex Formation with Ammonia:
Co(CH₃COO)₂ + 6NH₃ → Co(NH₃)₆₂

5. APPLICATIONS AND INDUSTRIAL USES

6. SPECIFICATIONS (TYPICAL)

7. HANDLING AND STORAGE

Handling Notes:

• Avoid dust formation and inhalation

• Avoid skin and eye contact

• Use in well-ventilated areas

• Wash hands thoroughly after handling

• Keep containers tightly closed when not in use

• Protect from moisture

8. SAFETY AND TOXICOLOGY

SPECIAL WARNINGS:

• Cobalt(II) Acetate is classified as a suspected carcinogen and reproductive toxicant

• Avoid inhalation of dust

• Avoid contact with skin and eyes

• Use only in well-ventilated areas

• Cobalt compounds may cause allergic skin reactions

• Very toxic to aquatic life; avoid environmental release

9. FIRST AID MEASURES

Special Notes:

• Cobalt compounds are toxic and may cause allergic reactions

• Medical personnel should be informed about cobalt compound exposure

• In case of ingestion, do not induce vomiting due to possible aspiration risk

10. TRANSPORT INFORMATION

11. REGULATORY INFORMATION

12. SUMMARY AND CRITICAL WARNINGS

SUMMARY:

Cobalt(II) Acetate (Co(CH₃COO)₂, CAS 6147-53-1) is a red to purple crystalline solid with a molecular weight of 177.03 g/mol and density of approximately 1.7 g/cm³. It is soluble in water and ethanol, and decomposes at ~140°C. It is paramagnetic due to unpaired electrons in the cobalt ion. The compound features a central cobalt ion coordinated by two acetate groups with octahedral geometry in its hydrated form.

Its most important applications include use as a catalyst in organic synthesis and polymerization reactions, as an intermediate for other cobalt compounds, as a pigment in ceramics and glass industry, and as a source of cobalt ions in analytical chemistry.

The compound is classified as a suspected carcinogen (Category 1B) and reproductive toxicant (Category 1). It is harmful if swallowed or inhaled, causes skin and eye irritation, may cause allergic skin reactions, and is very toxic to aquatic life. Storage should be in cool, dry, well-ventilated areas, in tightly closed containers, away from moisture and strong acids.

Key Properties:

Key Safety Points:

• CARCINOGEN: Category 1B (suspected carcinogen)

• REPRODUCTIVE TOXIN: Category 1

• HARMFUL: Harmful if swallowed or inhaled (H302, H332)

• IRRITANT: Skin and respiratory irritation (H315, H335)

• SENSITIZER: May cause allergic skin reaction (H317)

• ENVIRONMENTAL: Very toxic to aquatic life (H410)

• PROTECTIVE EQUIPMENT: Gloves, safety goggles, protective clothing, dust mask

CRITICAL WARNINGS:

1. Carcinogenicity and Reproductive Toxicity: Cobalt(II) Acetate is classified as Category 1B carcinogen and Category 1 reproductive toxicant. Strict exposure controls are mandatory.

2. Respiratory Sensitization: May cause allergy or asthma symptoms or breathing difficulties if inhaled. Inhalation exposure must be strictly controlled.

3. Environmental Hazard: Very toxic to aquatic life with long-lasting effects. Environmental release must be strictly prevented.

4. Hygroscopic: Slightly hygroscopic; must be stored in airtight containers and handled in dry conditions.

5. Customs Classification: The correct customs tariff code is 2915.29.00.

6. Regulatory Compliance: REACH, KKDİK, and TSCA registration requirements apply. Not permitted for food, cosmetic, or pharmaceutical applications.

Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with Cobalt(II) Acetate. This material is strictly for industrial and research use only.