Calcium Carbonate
CAS 471-34-1 · CaCO3 · HS 2836.50
Calcium carbonate (CaCO3, CAS 471-34-1) is the worlds highest-volume mineral filler, supplied as ground calcium carbonate (GCC) produced by milling high-purity limestone, marble or chalk, or as precipitated calcium carbonate (PCC) synthesised by carbonation of lime for tighter particle-size control and higher brightness. It is used to reduce compound cost, raise stiffness and impact strength, improve dimensional stability and, in paper, to raise brightness and opacity. Buyers compare CaCO3 assay, whiteness, D50 and D97 particle size, oil absorption and whether the grade is surface treated with stearic acid for polyolefin compatibility.
Application scenarios
- PVC pipes, profiles and cables
- Polyolefin masterbatch and compounds
- Paper filling and coating
- Architectural and industrial paints
- Sealants and adhesives
- Construction dry-mix mortars
Typical specifications
| CAS Number | 471-34-1 |
|---|---|
| Molecular Formula | CaCO3 |
| Type | GCC / PCC |
| CaCO3 Assay | ≥ 98.0% |
| Whiteness | ≥ 94% |
| Particle Size D50 | 1.5 - 15 µm (grade dependent) |
| HS Code | 2836.50 |
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Suppliers of Calcium Carbonate
6 qualifiedZibo, Shandong, China · Est. 1998
Data confidence 95% · Online verified · Claim Pending
- Guangdong Xinhai Chemical Co., Ltd.Manufacturer
Jiangmen, Guangdong, China · Est. 2004
Data confidence 94% · Not verified · Claimed
Quzhou, Zhejiang, China · Est. 2001
Data confidence 93% · On-site verified · Featured
Guilin, Guangxi, China · Est. 2002
Data confidence 93% · Online verified · Verified
- Anhui Guotai Fine Chemicals Co., Ltd.Manufacturer
Hefei, Anhui, China · Est. 2011
Data confidence 88% · Not verified
- Yunnan Dianchi Mineral Processing Co., Ltd.Manufacturer
Kunming, Yunnan, China · Est. 2008
Data confidence 83% · Not verified
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