Chemicals property of zinc stearate

CAS Number :557-05-1 EC Number:209-151-9

Linear Formula [CH3(CH2)16COO]2Zn. Molecular Weight: 632.33

Technical index of zinc stearates

Appearance White powder

Zinc content,% 10-11 10.5-11

Moisture(105℃) 1.0max

ZnO content,% 13.0-14.0

zinc stearate melting point,℃ 118-

Free Fatty acid,% <1.0

Residue on 200 mesh,% <0.5

Features of zinc stearates

1. Zinc stearates is non-toxic heat stabilizer

2. Good smoothing properties

3. Can prevent initial coloring

4. Can easily cause quick degradation,and thus use level should be strictly controlled

Application of zinc stearates

1.Rubber: It can improve flow of rubber and dispersion of vulcanising agent throught the compound.

2.Plastics :It as Internal lubricants and mould release agents for Polystyrene,Phenolics,Polyolefins,

Nylon,Melamine Master Batches and Urea.

3.Coating: Stearate zinc as a component in the coating of abrasive papers and sanding sealers.

4.PVC Compounds: zinc stearate mixture with calcium stearate,barium stearate as compound heat stabilzier.

Synthesis processing

zinc stearate powder,based on water as the medium.Synthesis by stearic acid and zinc salt.

Heavey grade zinc sterarate prepared by the reaction of stearic acid and zinc oxide direct synhtesis.