Description

Magnesium Thiosulfate Hexahydrate is an inorganic salt compound valued for its role as a source of bioavailable magnesium and thiosulfate ions. This dual functionality makes it a versatile specialty chemical for agricultural and industrial processes where controlled nutrient delivery or reducing properties are required. Key industries that utilize this material include agriculture, water treatment, and specialty chemical synthesis.

Application

• Agricultural Fertilizers & Soil Amendments: Used as a source of highly soluble magnesium and sulfur for correcting deficiencies in crops, often in fertigation or foliar spray formulations.
• Water Treatment: Acts as a dechlorinating agent and reducing agent in certain wastewater and industrial water treatment processes.
• Chemical Synthesis: Serves as a reagent or intermediate in the production of other sulfur-containing compounds and specialty chemicals.
• Photographic Industry: Used in some photographic fixing baths as a component, leveraging the thiosulfate ion's ability to dissolve silver halides.
• Leather Processing: Can be employed in certain tanning processes or as a reducing agent in leather treatment.
• Laboratory & Research: Used as a standard or reagent in analytical chemistry and various research applications.

Basic Information

Product Name	Magnesium Thiosulfate Hexahydrate
CAS No.	13446-30-5
Molecular Formula	MgS2O3·6H2O
Molecular Weight	244.51 g/mol
Synonyms	Magnesium Thiosulphate Hexahydrate; Magnesium Hyposulfite Hexahydrate; Thiosulfuric Acid, Magnesium Salt, Hexahydrate; Magnesium Sulfurothioate Hexahydrate; EINECS 236-638-4
EINECS	236-638-4

Quality Control

Our Magnesium Thiosulfate Hexahydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets defined specifications for purity, identity, and physical properties. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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 material is hygroscopic (moisture-sensitive) and must be kept in original packaging or a suitable moisture-proof container to prevent caking and degradation.

Specification

Item	Specification
Appearance	White or colorless crystalline solid
Identification (IR)	Conforms
Assay (MgS2O3·6H2O)	≥ 98.0 %
pH (5% solution)	5.0 - 7.0
Water Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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