Cobalt acetate

CAS Number
71-48-7
EC Number
200-755-8
Chemical Formula
C2H4O2.1/2Co
Molecular Weight
177.02 g/mol

Description

Cobalt acetate (CAS 71-48-7), also sold as cobaltous diacetate, is an organometallic cobalt salt used primarily as a catalyst and metal source across chemical manufacturing and surface treatment industries. It delivers reactive cobalt in a soluble, processable form that integrates readily into industrial formulations and process baths. In polymer and plastics manufacturing, it functions as a catalyst or co-catalyst.

It is used in PET polymerization and oxidation reactions, influencing color and molecular weight outcomes. Textile and leather processors use it in dyeing and finishing baths to promote dye fixation and surface uniformity. In coatings and printing inks, it acts as a drier catalyst, accelerating oxidative cure in alkyd-based systems. Pharmaceutical and biotechnology applications draw on it as a cobalt precursor in synthesis processes.

It also serves as a trace metal supplement in fermentation media. The product is available as a pink to violet crystalline powder and in solution form, with the tetrahydrate being the most prevalent grade. Technical and reagent-grade specifications are standard across the market. Bulk supply is typically offered in fiber drums or intermediate bulk containers, with smaller packaging available for laboratory use.

Other Names (Synonyms)

Cobaltous diacetate|Cobalt(2+) acetate|Cobalt diacetate|Bis(acetato)cobalt|Acetic acid, cobalt(2+) salt (2:1)|Acetic acid, cobalt(2+) salt|Cobaltous acetate|Cobalt(II) acetate

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point 298 °C (dec.)(lit.)
Density 1.13 g/cm³
Appearance Violet Crystalline Powder
Color Pale pink to purple
Form Powder
Water Solubility Soluble in water, alcohol, dilute acids and pentyl acetate(tetrahydrate).
Log P -0.285 (est)

Documentation

Safety & Handling Learn More

Danger
GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant

Hazard Statements

H302 Harmful if swallowed
H317 May cause an allergic skin reaction
H319 Causes serious eye irritation
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P233 Keep container tightly closed.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

Trade & Regulatory

UN Number 3077
ADR Class 9
Packing Group III
Storage Class 6.1D - Non-combustible acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects
WGK (Germany) 2
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