Description

Calcium Carbonate CAS NO 1317-65-3 is a versatile, naturally occurring inorganic compound that serves as a fundamental industrial mineral. Its primary value lies in its ability to act as a cost-effective filler, extender, pH buffer, and source of calcium across diverse manufacturing sectors. This high-quality product is essential for industries including plastics, paper, paints & coatings, construction, pharmaceuticals, and food & beverage. We supply consistent, reliable grades to meet the stringent demands of global B2B buyers.

Application

• Plastics & Polymers: Widely used as a filler and reinforcing agent in PVC, polypropylene, and polyethylene to improve mechanical properties, reduce costs, and enhance whiteness.
• Paper Manufacturing: Acts as a filler and coating pigment to improve paper brightness, opacity, smoothness, and printability.
• Paints & Coatings: Serves as an extender pigment and functional filler to provide body, improve durability, and control gloss and sheen.
• Construction Materials: A key raw material in cement, sealants, adhesives, and as a filler in asphalt and building composites.
• Pharmaceuticals & Nutraceuticals: Used as an active pharmaceutical ingredient (API) for calcium supplementation and as an excipient in tablet formulations.
• Food & Beverage (FCC Grade): Employed as a nutritional calcium fortifier, anti-caking agent, pH regulator, and whitening agent.
• Personal Care & Cosmetics: Functions as an abrasive in toothpaste, a bulking agent in powders, and an opacifying agent in creams.
• Environmental & Water Treatment: Utilized for flue gas desulfurization and as a pH adjustment agent in water purification processes.

Basic Information

Product Name	Calcium Carbonate
CAS No.	1317-65-3
Molecular Formula	CaCO3
Molecular Weight	100.09 g/mol
Synonyms	Carbonic acid calcium salt; Limestone; Calcite; Aragonite; Chalk; Precipitated Calcium Carbonate (PCC); Ground Calcium Carbonate (GCC); Marble; Agricultural Limestone; Whiting
EINECS	215-279-6

Quality Control

Our Calcium Carbonate is manufactured and tested under a stringent quality management system to ensure batch-to-batch consistency and compliance with relevant industry standards, including USP, FCC, and ISO. Each production lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, particle size distribution, and impurity profiles. We support audits and provide full traceability documentation to meet the quality assurance needs of our global industrial partners.

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 kept sealed to prevent caking or moisture absorption.

Specification

Item	Specification
Appearance	White powder or crystals
Identification (IR)	Conforms
Assay (CaCO3)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Acid Insoluble Substances	≤ 0.2 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Particle Size (D50)	Customizable (e.g., 2-20 µm)
pH (10% slurry)	8.0 - 10.0

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