Description
Precipitated Calcium Carbonate 98% Coating Grade
We are a bulk precipitated calcium carbonate supplier of PCC 98% coating grade. Precipitated Calcium Carbonate 98% Coating Grade (CAS 471-34-1, molecular formula CaCO3) is a coatings raw material used by paint, ink and adhesive formulators who need consistent dispersion, opacity and rheology from drum to drum. China Chemicals supplies it at 98% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.
It is also traded as PCC, Precipitated Chalk, Calcite. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.
Typical applications
- Extender pigment in emulsion and alkyd paint
- Reinforcing filler in PVC, sealant and rubber
- Paper coating and filler for brightness
- Acid neutralisation in flue gas and effluent
- Cost-effective TiO2 spacing in high-PVC coatings
Technical specification
| Chemical name | Precipitated Calcium Carbonate 98% Coating Grade |
|---|---|
| Synonyms | PCC, Precipitated Chalk, Calcite |
| CAS number | 471-34-1 |
| Molecular formula | CaCO3 |
| Appearance | White fine powder |
| CaCO3 content | 98.0% min |
| Whiteness | 95% min |
| Oil absorption | 20 – 30 g/100 g |
| Moisture | 0.4% max |
| Particle size D50 | 1.5 – 3.0 µm |
| pH (10% slurry) | 9.0 – 10.0 |
Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.
Packaging and supply
Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.
Handling and safety
Transport classification: Not regulated · Not classified as hazardous. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.
Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.
What Is Precipitated Calcium Carbonate (PCC)?
Precipitated Calcium Carbonate is manufactured, not mined. The process starts with quicklime (CaO), slaked with water to form milk of lime, then carbonated by passing CO2 gas through the slurry — the reaction precipitates ultra-pure calcium carbonate crystals out of solution. This is fundamentally different from Ground Calcium Carbonate (GCC), which is simply natural limestone mechanically ground to size.
Why Coating Formulators Choose PCC Over GCC
PCC offers higher purity, finer and more uniform particle size, and better brightness than most GCC grades — translating directly into more predictable gloss control, opacity and film consistency in a finished paint, and better compatibility with organic binder systems when surface-coated. It is often used alongside Barium Sulphate as an extender pigment and Titanium Dioxide Rutile for prime opacity.
Handling & Safety
Precipitated calcium carbonate is a non-hazardous, chemically inert mineral filler, not classified as a health or physical hazard under standard GHS criteria. As with any fine powder, standard industrial dust precautions apply — avoid prolonged inhalation of airborne dust, and use basic PPE during bulk handling.
Frequently Asked Questions
What is the difference between PCC and ground calcium carbonate (GCC)?
PCC is manufactured by chemical precipitation, giving controlled, fine, consistent particle size and higher purity. GCC is natural limestone mechanically ground to size, which is cheaper but less consistent batch to batch.
Why is PCC used in paint as an extender?
It adds opacity, bulk and controlled gloss properties at a lower cost than prime pigments like titanium dioxide, while its fine, consistent particle size gives more predictable, repeatable film properties.
Is Precipitated Calcium Carbonate hazardous?
No. It is a non-hazardous, chemically inert mineral filler, not classified as a health or physical hazard under GHS criteria.
What packaging and order quantities are available?
We supply from trial quantities for formulation testing through to full bulk orders. Contact us with your required volume for current pricing and lead time.
Your Trusted Precipitated Calcium Carbonate Supplier
As an established precipitated calcium carbonate supplier, we serve manufacturers and processors with consistent quality and reliable delivery. The right precipitated calcium carbonate supplier gives you steady specification and documentation batch after batch, and as your precipitated calcium carbonate supplier we back every order with a Certificate of Analysis.
For further independent reference, see the Wikipedia entry on precipitated calcium carbonate, and browse our full Coatings & Paint Raw Materials range.
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