Description

Calcium Thiosulphate is an inorganic salt with significant utility in industrial and agricultural chemistry. Its unique chemical properties make it a valuable reagent and additive for processes requiring sulfur donation or reduction. This compound is particularly sought after by manufacturers in the agricultural, photographic, and water treatment sectors. We supply high-purity Calcium Thiosulphate CAS NO 10124-41-1 to meet the stringent demands of global B2B clients.

Application

• Agricultural Fertilizer & Soil Amendment: Used as a source of soluble calcium and sulfur, and as a nitrification inhibitor to improve nitrogen use efficiency in crops.
• Photographic Industry: Acts as a fixing agent (hypo) in photographic development to remove unexposed silver halides from film and paper.
• Water & Wastewater Treatment: Employed for dechlorination and in processes to remove heavy metals through precipitation.
• Leather Processing: Utilized in the tanning industry as a deliming agent and to improve the quality of leather.
• Mining & Metallurgy: Serves as a lixiviant in gold and silver extraction and in ore flotation processes.
• Chemical Synthesis: Functions as a reducing agent and sulfur source in various organic and inorganic synthetic pathways.
• Concrete & Construction: Added to cement mixtures as a set accelerator and to improve certain durability properties.

Basic Information

Product Name	Calcium Thiosulphate
CAS No.	10124-41-1
Molecular Formula	CaS2O3 or CaO3S2
Molecular Weight	152.21 g/mol
Synonyms	Calcium thiosulfate; Calcium hyposulfite; Lime sulfur; Sulfurated lime; Thiosulfuric acid, calcium salt; Caswell No. 150; UNII-5V4L2GB8T8
EINECS	233-334-4

Quality Control

Our Calcium Thiosulphate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, assay, and impurity profiles to guarantee consistency and compliance for your application.

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) and must be kept in a dry environment to prevent caking and decomposition. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms
Assay (CaS2O3)	Min. 95.0%
pH (5% solution)	6.0 - 8.5
Water Insoluble Matter	Max. 0.5%
Heavy Metals (as Pb)	Max. 20 ppm
Loss on Drying	Max. 2.0%

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