Calcium stearate

  • Calciumoctadecanoat
  • Calcium distearate
  • E 470a

White odorless flammable solid

Fixed

1.07 g · cm -3

140-160 ° C

435 ° C ( decomposition)

  • Insoluble in water ( 2.2 mg · l-1 at 20 ° C)
  • Poorly in ethanol and diethyl ether

> 10,000 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Calcium stearate is a chemical compound selected from the group of fatty acid salts, more specifically, it is the calcium salt of stearic acid. Technical calcium stearate contains calcium mostly other calcium salts of higher fatty acids, for example Calciumpalminat.

Production and representation

Technical calcium stearate (usually contaminated with the sodium salt of palmitic acid ) by reaction of calcium chloride with the sodium salt of stearic acid obtained, followed by washing out the sodium chloride.

Use

Calcium stearate is the production of non-toxic stabilizers of plastics, preferably in combination with zinc stearate, barium stearate or magnesium stearate as well. Furthermore, it serves as a lubricant in pharmaceutical products and as a lubricant ( Solid oils ) in the paper and metal - processing industry, and the sand preparation.

CAS registry number PubChem Stabilizer (chemistry)
257374
de