Description

Anhydrite (Ca(SO4)) is the anhydrous crystalline form of calcium sulfate, a key industrial mineral. Its consistent purity and chemical stability make it a critical raw material for numerous manufacturing processes. This product is essential for industries ranging from construction and agriculture to specialized chemical synthesis, where reliable quality and predictable performance are paramount.

Application

• Cement and Construction Materials: As a set regulator and strength enhancer in Portland cement and specialty gypsum plasters.
• Soil Conditioner: Used in agriculture to improve soil structure and provide a source of calcium and sulfur for plant nutrition.
• Industrial Filler and Pigment: Acts as an inert, white filler in paints, coatings, plastics, and paper products.
• Chemical Synthesis: Serves as a precursor for the production of sulfuric acid and various sulfur compounds.
• Desiccant: Utilized in controlled drying processes due to its moisture-absorbing properties when activated.
• Dental and Medical Plasters: High-purity grades are used in the formulation of impression materials and surgical casts.

Basic Information

Product Name	Anhydrite (Ca(SO4))
CAS No.	14798-04-0
Molecular Formula	CaSO4
Molecular Weight	136.14 g/mol
Synonyms	Anhydrous Calcium Sulfate; Anhydrous Gypsum; Calcium Sulfate Anhydrous; Drierite; Muriacite; Karstenite; Anhydrous Sulfate of Lime; Anhydrite Mineral
EINECS	238-967-3

Quality Control

Our Anhydrite is produced and tested under a rigorous quality management system to ensure batch-to-batch consistency and compliance with relevant industrial and technical grade specifications. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as purity, moisture content, and particle size distribution upon request, supporting your quality assurance protocols.

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 the container tightly sealed to minimize exposure to atmospheric moisture, as the material is hygroscopic (moisture-sensitive).

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms
Assay (CaSO4)	≥ 95.0 %
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Particle Size (Typical)	Contact for details

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