Description

Ammonium Thiosulfate is an inorganic salt widely recognized for its role as a source of soluble sulfur and nitrogen. This compound is valued for its high solubility and effectiveness in various industrial and agricultural processes. It serves as a critical raw material for manufacturers in the photographic, mining, and agricultural sectors, where consistent quality and reliable supply are paramount.

Application

• Photographic Fixer: A primary component in photographic fixing baths to dissolve unexposed silver halides from film and paper.
• Agricultural Fertilizer: Used as a highly efficient liquid fertilizer and soil amendment, providing readily available sulfur and nitrogen to crops.
• Mining (Gold & Silver Leaching): Acts as an alternative, non-cyanide lixiviant for the extraction of precious metals from ores.
• Water Treatment: Employed in dechlorination processes to neutralize residual chlorine in wastewater and industrial effluent.
• Chemical Synthesis: Serves as a sulfur source and reducing agent in various organic and inorganic synthesis reactions.
• Analytical Chemistry: Used in iodometric titrations and as a reagent in specific analytical procedures.

Basic Information

Product Name	Ammonium Thiosulfate
CAS No.	7783-18-8
Molecular Formula	(NH₄)₂S₂O₃
Molecular Weight	148.20 g/mol
Synonyms	Ammonium Hyposulfite; Diammonium Thiosulfate; Thiosulfuric Acid, Diammonium Salt; ATS; Ammonium Thiosulphate; Fixing Salt; (NH4)2S2O3
EINECS	231-982-0

Quality Control

Our Ammonium Thiosulfate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and 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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	White crystalline solid or solution
Identification (IR)	Conforms
Assay (as (NH₄)₂S₂O₃)	≥ 99.0%
pH (5% solution)	6.0 - 7.5
Insoluble Matter	≤ 0.01%
Chloride (Cl)	≤ 0.001%
Sulfate (SO₄)	≤ 0.01%
Heavy Metals (as Pb)	≤ 5 ppm

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