Description
Industrial Calcium Sulf Detailed Specifications
Industrial-Grade Calcium Sulfate is a highly stable inorganic compound available in dihydrate (gypsum), hemihydrate (plaster-grade), and anhydrite (anhydrous) forms. With consistent mineral purity, controlled particle distribution, and excellent structural stability, it is widely used in cement and building materials, fertilizer production, chemical processing, soil improvement, water treatment, and industrial fillers.
Its predictable hydration/dehydration behavior and low impurities make it an essential material across multiple industrial sectors.
Technical Specifications
| Item | Specification |
|---|---|
| Chemical Name | Calcium Sulfate |
| Forms | Dihydrate (CaSO₄·2H₂O), Hemihydrate (CaSO₄·0.5H₂O), Anhydrite (CaSO₄) |
| Purity | 95–98% (Technical Grade), up to ≥99% (Refined Grade) |
| Appearance | White / off-white crystalline powder or granules |
| Moisture | < 1.0% (Anhydrite / Hemihydrate); structural water for dihydrate |
| pH (10% suspension) | Neutral to slightly alkaline |
| Bulk Density | 0.8–1.1 g/cm³ (varies with form & particle size) |
| Solubility | Slightly soluble in water; solubility decreases with temperature |
| CAS Numbers | 7778-18-9 / 10101-41-4 / 10034-76-1 |
| HS Code | 252020 |
Key Functions & Industrial Benefits
- Controlled Hydration Properties
Stable crystalline structure suitable for cement set control, plaster systems, cast materials, and industrial binders. - High Purity Mineral Source
Low insolubles and stable Ca/S ratio ensure consistent downstream performance in chemicals, fillers, and fertilizer blends. - Structural & Processing Stability
Excellent thermal stability, low reactivity (anhydrite), and predictable setting behavior ensure reliable industrial output. - Soil & Agricultural Benefits
Provides available calcium and sulfur, improves soil structure, reduces sodicity, enhances water infiltration. - Cost-Effective & Widely Applicable
Abundant mineral source, simple storage conditions, suitable for high-volume industrial consumption.
Product Grades Available
1. Calcium Sulfate Dihydrate (Gypsum)
- High consistency for cement retarders
- Used in agriculture & soil conditioning
- Suitable for gypsum board and general building materials
2. Calcium Sulfate Hemihydrate (Plaster-Grade)
- Fast and controlled setting performance
- Suitable for molding, casting, finishing plaster, specialty construction materials
3. Anhydrous Calcium Sulfate (Anhydrite)
- Low moisture, highly stable, low reactivity
- Used in industrial fillers, desiccant blends, and chemical processing
Industrial Applications
Construction & Building Materials
- Cement set regulator
- Plaster, stucco, drywall manufacturing
- Self-leveling compounds, grouts, cast building materials
Chemical Manufacturing
- Filler, carrier, flow aid
- Intermediate for sulfates and calcium salts
- Catalyst support and process mineral additive
Agriculture & Soil Improvement
- Neutralizes sodic soils
- Improves structure, increases Ca & S availability
- Reduces soil compaction & enhances infiltration
Industrial Fillers & Plastics
- In plastics, rubber, and resin systems
- Improves dimensional stability & mechanical properties
Water Treatment
- Coagulation aid
- pH buffering
- Mineral additive in multi-component treatment systems
Desiccants & Specialty Uses
- Anhydrous CaSO₄ as drying agent
- Ceramic, glass, and mold applications
Packaging, Transport & Storage
- Packaging Options: 25 kg bags / 40 kg bags / 50 kg bags
500–1000 kg jumbo bags
Bulk delivery upon request - Storage Conditions: Store in a dry, ventilated, moisture-free environment.
Hemihydrate and anhydrite must avoid prolonged humidity exposure to prevent rehydration or caking. - Shelf Life: 12–24 months if stored correctly.
Why Choose DONGKWANG Industrial Calcium Sulfate
Consistent Industrial-Grade Quality
DONGKWANG ensures stable purity, controlled moisture levels, and uniform particle size—ideal for high-precision construction, chemical, and manufacturing processes.
Reliable Supply & Global Logistics
With advanced production capacity and international distribution experience, DONGKWANG guarantees steady supply, on-time delivery, and dependable support for global industrial clients.
Application-Focused Technical Expertise
Our team provides guidance tailored to cement, fillers, coatings, plastics, soil conditioning, and chemical processing—helping customers achieve optimal performance in every application.
Strict Quality Control & Compliance
Every batch is tested against industrial standards for purity, whiteness, solubility, and particle consistency, ensuring predictable results and long-term reliability.
Partner-Oriented Service
From customized specifications to flexible packaging and technical assistance, DONGKWANG supports manufacturers with solutions designed to enhance productivity and reduce operational risks.
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