Calcium Sulphate Overview

Calcium Sulphate is a versatile chemical widely used in pharmaceuticals, food processing, construction, and industrial applications. As a GMP & ISO 9001-certified manufacturer, Chemignition Laboratory ensures high-quality Calcium Sulphate production, meeting global regulatory standards. We supply BP and USP-grade Calcium sulphate dihydrate, making us a trusted global manufacturer and exporter.

Key Properties of Calcium Sulphate

Product Name: Calcium Sulphate
Synonyms: Calcium Sulphate Dihydrate
CAS No: 10101-41-4
Chemical Formula: CaSO₄·2H₂O
Grade: BP / USP
Appearance: White or almost white fine powder.
Molar Mass: 172.2 g/mol
Solubility: Very slightly soluble in water; practically insoluble in ethanol (96 per cent).
Melting Point: 1460°C (Decomposes)

Manufacturing process of Calcium Sulphate

Step 1: Raw Material Selection
High-purity calcium carbonate and sulfuric acid are selected.
Raw materials undergo strict quality checks for purity.
Step 2: Chemical Reaction & Processing
Calcium carbonate reacts with sulfuric acid to form Calcium Sulphate.
The solution is filtered and refined to remove impurities.
Step 3: Crystallization & Drying
The solution is evaporated, crystallized, and dried to achieve the required purity.
Step 4: Quality Control & Testing
The product is tested for assay, solubility, moisture content, and pH as per IP/BP/USP standards.
Step 5: Packaging & Storage
Packed in HDPE bags or fiber drums to prevent contamination.
Stored in a cool, dry place to maintain stability.

Applications of Calcium Sulphate

Pharmaceutical Industry
Excipient
Used in tablet formulations as a filler and binder.
Dental Plaster
Used in dental applications and bone grafting.

Food & Beverage Industry
Firming Agent
Used in tofu production and food stabilization.
Dough Conditioner
Improves texture in baked goods.

Construction Industry
Plaster of Paris
Used in wall coatings and sculpture molding.
Cement Additive
Enhances strength and durability of cement products.

Industrial Applications
Ceramics
Improves strength and setting properties.
Paper Manufacturing
Used as a filler and whitening agent.
Soil Conditioner
Enhances soil structure and reduces salinity.

Technical Specifications of Calcium Sulphate

Calcium Sulphate BP Specification

Download Icon Download Calcium Sulphate BP Specification
Sr. No. Test Specification
1 Description White or almost white fine powder.
2 Solubility Very slightly soluble in water; practically insoluble in ethanol (96 per cent).
3 Identification by Sulphate It gives reaction of Sulphate.
4 Identification by Calcium It gives reaction of Calcium.
5 Acidity or Alkalinity Complies with the prescribed test.
6 Chlorides Not more than 300 ppm
7 Iron Not more than 100 ppm
8 Loss on Ignition 18.00% to 22.00%
9  Assay Not less than  98.00% to Not more than 102.00%

Calcium Sulphate USP Specification

Download Icon Download Calcium Sulphate USP Specification
Sr. No. Test Specification
1 Description White or almost white fine powder.
2 Solubility Very slightly soluble in water; practically insoluble in ethanol (96 per cent).
3 Identification by Sulphate It gives reaction of Sulphate.
4 Identification by Calcium It gives reaction of Calcium.
5 Iron Not more than 100 ppm
6 Loss on Ignition 19.00% to 23.00%
7  Assay Not less than  98.00% to Not more than 101.00%
Note: Additional test to be carried out as per customer requirements.

Packing and Storage condition of Calcium Sulphate

Packing:

Packed in 25 kg / 50 kg HDPE bags with inner LDPE liner for moisture protection.
Available in fiber drums or plastic drums for high-purity grades.
Bulk packaging in jumbo bags (500 kg – 1000 kg) available upon request.

Storage:

Store in a cool, dry, and well-ventilated area away from direct sunlight.

MSDS - Calcium Sulphate

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Why Choose Chemignition for
Calcium Sulphate Supply?

Quality Assurance

Grade Compliance

Calcium Sulphate is manufactured in adherence to stringent global pharmaceutical standards.

In-House Quality Control

Each batch undergoes rigorous testing for purity, stability, and efficacy.

Regulatory Approvals

Certified for export and compliant with international regulatory requirements.

Large-Scale Manufacturing and Export

Grade Compliance

Calcium Sulphate is manufactured in adherence to stringent global pharmaceutical standards.

In-House Quality Control

Each batch undergoes rigorous testing for purity, stability, and efficacy.

Regulatory Approvals

Certified for export and compliant with international regulatory requirements.

How to Order Calcium Sulphate

For bulk orders or more information about Calcium Sulphate, contact our sales team today:
 
Email
info@chemignition.com
Phone
+91 8866558673

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    FAQs related to Calcium Sulphate

    What is Calcium Sulphate?

    Calcium Sulphate (CaSO₄) is an inorganic compound widely used in pharmaceuticals, food processing, construction, and industrial applications due to its binding, drying, and setting properties.

    What are the main applications of Calcium Sulphate?

    Pharmaceuticals – Used as an excipient in tablet formulations and dental plaster.
    Food & Beverages – Acts as a firming agent, stabilizer, and dough conditioner.
    Construction – Key ingredient in plaster of Paris and cement.
    Industrial Applications – Used in ceramics, paper manufacturing, and soil conditioning.

    What quality standards does Chemignition Laboratory follow?

    We manufacture Calcium Sulphate under GMP & ISO 9001 standards, ensuring high purity and compliance with BP and USP specifications.

    Is Calcium Sulphate safe for pharmaceuticals and food products?

    Yes, Calcium Sulphate is FDA-approved and widely used in regulated industries with specified usage limits.

    What grades of Calcium Sulphate do you provide?

    We offer BP and USP grades suitable for pharmaceutical, food, and industrial applications.

    How should Calcium Sulphate be stored?

    Store Calcium Sulphate in a cool, dry, well-ventilated area, away from moisture and incompatible substances.

    Do you offer bulk or customized packaging?

    Yes, we provide customized packaging solutions, including 25 kg and 50 kg HDPE bags with an inner polythene liner for moisture protection.