Description

Barium Thiosulfate is an inorganic salt with the CAS registry number 35112-53-9, valued for its role as a specialized chemical intermediate and precipitating agent. Its primary commercial significance lies in its ability to provide a source of barium ions in controlled reactions and its utility in specific analytical and synthesis processes. This compound is essential for manufacturers and R&D laboratories in sectors such as specialty chemicals, analytical reagent production, and materials science.

Application

• Chemical Synthesis: Acts as a key intermediate or barium source in the production of other barium salts and specialty inorganic compounds.
• Analytical Chemistry: Used as a reagent in specific gravimetric analysis and titration methods for the determination of certain anions.
• Photographic Industry: Serves in specialized photographic fixing or toning solutions, though less common than other thiosulfates.
• Pyrotechnics & Matches: Employed as a component in certain pyrotechnic compositions to produce specific flame colors or effects.
• Water Treatment: Investigated for use in precipitation processes for the removal of specific heavy metal contaminants.
• Research & Development: Utilized in academic and industrial labs for studying reaction mechanisms and developing new materials.

Basic Information

Product Name	Barium Thiosulfate
CAS No.	35112-53-9
Molecular Formula	BaS2O3 or BaO3S2
Molecular Weight	249.46 g/mol
Synonyms	Barium Hyposulfite; Barium Thiosulphate; Thiosulfuric Acid, Barium Salt; Barium Sulfurothioate; Barium Sulfothionate; Barium (meta)thiosulfate; Barium salt of thiosulfuric acid
EINECS	Contact for details

Quality Control

Our Barium Thiosulfate is manufactured under controlled conditions to ensure batch-to-batch consistency and high purity. Quality is verified through a series of analytical tests including assay, identification, and impurity profiling. A Certificate of Analysis (COA) detailing specific results for each lot is provided to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Barium Thiosulfate)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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