Coated Calcium Carbonate Powder
Surface treated with stearic acid so it repels moisture and disperses well in polymers.
Overview
About this product
Coated calcium carbonate is ground calcium carbonate whose particle surfaces are treated with stearic acid. The coating makes the powder repel moisture and helps it mix evenly into polymers.
It is the usual choice for plastics, where untreated powder can clump and take up moisture. Mesh sizes follow the same scale as the uncoated range and are confirmed in the quotation.
- Stearic acid coated
- Mesh sizes in the quotation
Sizes
Available sizes.
Mesh sizes
Chosen from the uncoated range and confirmed in the quotation
Coating
Stearic acid
Specification
Specification table.
| Property | Typical value |
|---|---|
| CaCO3 content | 97% minimum |
| Whiteness | 93% or higher |
| Brightness | 93% or higher |
| Moisture | 0.3% maximum |
| Particle size, D50 | Depends on mesh grade |
| Particle size, D97 | Depends on mesh grade |
| Oil absorption | 10 to 18 g per 100 g |
| pH | 9 to 10 |
| Specific gravity | About 2.7 |
| Mohs hardness | 3 |
| Stearic acid coating | About 1% by weight |
Typical values. A technical data sheet and certificate of analysis are provided with every quotation.
Benefits
Key benefits.
- Repels moisture
- Disperses evenly in polymers
- Flows well in processing equipment
- Allows higher filler loadings
Packing
Packing options.
- 25 kg and 50 kg polypropylene bags
- Jumbo bags, 1 to 1.25 tonne
- Palletised
Palletised or loose loaded, with custom branding on request. See Quality and Logistics for shipping terms.
Related
Related products.
Tell us what you need and we will send a quotation.
Send the product, grade, quantity and destination port. A technical data sheet and certificate of analysis are provided with every quotation.