Metallic stearate

 

Calcium Stearate

Specification                          

                                            In accordance with HG/T 2424-93

Item

Index

Super Grade

First Grade

Qualified Grade

Appearance

White Powder

Calcium content, %

6.5±0.5

6.5±0.6

6.5±0.7

Free acid (accounted as stearic acid), %

0.5

Heating loss, %

2.0

3.0

3.0

Melting point,

140-155

140

125

Fineness (mesh of 0.075mm), %

99.5

89.0

Stacking density(g/cm3),

0.2

--

Product Performance:

It has good thermal stability, but poorer than lead stearate and barium stearate. It performs better if used with zinc or epoxy compound, so it is widely used for the nontoxic products. PVC can become light red at160 or heated for a long time. If in a large quantity, it will has the frost phenomenon.

Package: Packed in weaved bag, lined with a PE bag,20kgin weight.

Zinc Stearate

 Specification                                

                                                     In accordance with HG/T 3667-2000

Item

Index

Super Grade

First Grade

Qualified Grade

Appearance

White Powder

Zinc content, %

10.3-11.3

10.0-11.5

Free acid (accounted as stearic acid), %

0.8

1.0

1.5

Heating loss, %

0.8

1.0

1.5

Melting point,

120±5

Fineness , %

99.0 (0.045mm)

99.5 (0.075mm)

95.0 (0.075mm)

 Product Performance:

It will caused black point by decomposing PVC if zinc stearate used too much. It will become white zinc sulphide after absorbing sulfide in air, and slow down primary stainability process. It is not used independently for PVC products, usually with any others.

Package: Packed in weaved bag, lined with a PE bag,20kgin weight.


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