Description

Calcium Sulfate Dihydrate is a naturally occurring inorganic salt, widely recognized as the mineral gypsum. This versatile compound serves as a critical functional additive and processing aid across numerous industries due to its unique physical and chemical properties. It is essential for manufacturers in the construction, food & pharmaceutical, and agricultural sectors seeking a reliable source of a safe, inert, and multifunctional material. Consistent quality and reliable supply are paramount for its effective integration into industrial processes.

Application

• Construction & Building Materials: Primary raw material for the production of plaster, wallboard (drywall), cement retarder, and various architectural mouldings.
• Food Industry (FCC Grade): Used as a firming agent, stabilizer, dough conditioner, and a dietary source of calcium in products like tofu, baked goods, and fortified beverages.
• Pharmaceuticals (USP/EP Grade): Employed as an inert excipient in tablet formulations, primarily as a diluent and desiccant, and in dental plasters and casts.
• Agriculture & Soil Amendment: Applied to improve soil structure, provide calcium and sulfur nutrients, and ameliorate sodic soils.
• Industrial Processes: Acts as a filler and pigment in paints, paper, and textiles, and as a coagulant in tofu manufacturing.
• Art & Sculpture: Base material for plaster of Paris, used in casting, moulding, and art restoration.

Basic Information

Product Name	Calcium Sulfate Dihydrate
CAS No.	10101-41-4
Molecular Formula	CaSO4·2H2O
Molecular Weight	172.17 g/mol
Synonyms	Gypsum; Alabaster; Satin Spar; Selenite; Terra Alba; Precipitated Calcium Sulfate; Drierite; Calcium Sulfate Hemihydrate precursor; Mineral White
EINECS	231-900-3

Quality Control

Our Calcium Sulfate Dihydrate is manufactured under a stringent quality management system. We offer various grades, including Industrial, Food (FCC), and Pharmaceutical (USP/EP), each meeting its respective purity and safety specifications. Certificates of Analysis (COA) are provided with every shipment, detailing parameters such as assay, heavy metals, loss on drying, and microbial limits where applicable. Our commitment ensures product consistency and compliance with global regulatory standards like REACH and FDA guidelines for food contact substances.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); therefore, the original container must be kept tightly sealed after each use to prevent caking and maintain product integrity. Keep away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Conforms
Assay (as CaSO4·2H2O)	≥ 98.0 %
Loss on Drying	18.0 - 22.0 %
Water Soluble Substances	≤ 0.2 %
Chloride (Cl)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
pH (5% slurry)	5.0 - 8.0

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