Description

Calcium Sulfite 0.5-Water is a specific hydrate form of calcium sulfite, a key industrial chemical compound. This product is valued for its role as a versatile reducing agent and preservative across several manufacturing sectors. It is primarily utilized in industries such as water treatment, food processing, and pulp & paper manufacturing. Consistent quality and reliable supply are critical for maintaining efficient production processes.

Application

• Water Treatment: Acts as an oxygen scavenger and dechlorination agent in boiler feed water and wastewater systems.
• Food & Beverage Industry: Used as a preservative (E226) and antioxidant to prevent spoilage and maintain color in products like wine, fruit juices, and canned goods.
• Pulp & Paper Manufacturing: Serves in chemical pulping processes and as a bleaching agent.
• Flue Gas Desulfurization (FGD): Employed in air pollution control systems to remove sulfur dioxide from industrial exhaust gases.
• Chemical Synthesis: Functions as a reducing agent and sulfur source in various organic and inorganic chemical production.
• Pharmaceutical Intermediates: Used in the synthesis of certain pharmaceutical compounds.
• Textile Industry: Applied in bleaching and desizing processes for fabrics.
• Agriculture: Used as a fungicide and soil treatment agent in certain applications.

Basic Information

Product Name	Calcium Sulfite 0.5-Water
CAS No.	29501-28-8
Molecular Formula	CaSO3 · 0.5H2O
Molecular Weight	120.14 g/mol (anhydrous basis)
Synonyms	Calcium sulphite hemihydrate; Sulfurous acid, calcium salt (1:1), hemihydrate; Calcium sulfite hemihydrate; E226; Preservative E226; CAS 29501-28-8; Calcium sulphite (CaSO3) hemihydrate
EINECS	Contact for details

Quality Control

Our Calcium Sulfite 0.5-Water is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, composition, and physical properties. Certificates of Analysis (COA) are provided with every shipment, detailing key parameters such as assay, heavy metal content, and loss on drying. We can support compliance with relevant standards including Food Chemical Codex (FCC) for food-grade applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; store under an inert atmosphere (e.g., nitrogen) for long-term stability and to prevent degradation. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as CaSO3·0.5H2O)	≥ 95.0 %
Loss on Drying	≤ 5.0 %
Water Insoluble Matter	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Iron (Fe)	≤ 50 ppm

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