Description

Calcite CAS NO 13397-26-7 is a naturally occurring crystalline form of calcium carbonate (CaCO₃), renowned for its high purity and consistent chemical composition. This mineral is a fundamental industrial raw material valued for its versatility, neutralization capacity, and role as a cost-effective filler and extender. It is essential for manufacturers in sectors such as construction, plastics, paints and coatings, agriculture, and environmental remediation, where reliable quality and consistent particle size are critical for product performance.

Application

• Construction Materials: Primary raw material for cement and lime production; used as an aggregate and filler in concrete, asphalt, and building stones.
• Polymer & Plastics Industry: Acts as a functional filler and extender to enhance rigidity, dimensional stability, and reduce raw material costs in PVC, polypropylene, and polyethylene compounds.
• Paints, Coatings, and Sealants: Provides whiteness, opacity, and improved rheology as an extender pigment; enhances durability and weather resistance.
• Paper Manufacturing: Used as a coating pigment and filler to improve paper brightness, opacity, smoothness, and printability.
• Agriculture & Soil Treatment: Applied as a soil conditioner to neutralize acidic soils and as a calcium supplement in animal feed and fertilizers.
• Environmental Remediation: Employed in flue gas desulfurization (FGD) systems to scrub sulfur dioxide from industrial emissions and in water treatment for pH adjustment.
• Adhesives & Sealants: Functions as a rheology modifier and filler to control viscosity, sag resistance, and reduce formulation costs.
• Glass & Ceramics: Serves as a source of calcium oxide (CaO), a key fluxing agent that lowers the melting temperature and modifies the physical properties of the final product.

Basic Information

Product Name	Calcite
CAS No.	13397-26-7
Molecular Formula	CaCO₃
Molecular Weight	100.09 g/mol
Synonyms	Calcium Carbonate; Limestone; Chalk; Marble; Iceland Spar; Aragonite (polymorph); Vaterite (polymorph); Carbonic acid, calcium salt (1:1); Precipitated Calcium Carbonate (PCC); Ground Calcium Carbonate (GCC)
EINECS	207-439-9

Quality Control

Our Calcite is sourced and processed under strict quality management protocols to ensure batch-to-batch consistency and compliance with relevant industrial specifications. Quality is verified through parameters including chemical purity, particle size distribution (PSD), brightness, and specific surface area. A Certificate of Analysis (COA) detailing these specifications is provided with each shipment. We can supply grades compliant with various industry standards, including food (FCC), pharmaceutical (USP), and feed-grade specifications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong acids. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent caking due to moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as CaCO₃)	≥ 98.0 %
Calcium Content (as Ca)	≥ 39.0 %
Loss on Drying	≤ 2.0 %
Loss on Ignition	43.0 - 44.5 %
Acid Insoluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Particle Size (D50)	Customizable (e.g., 2-20 µm)
Brightness (ISO)	≥ 90 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.