Sodium thiosulfate

Sodium thiosulfate

Sodium thiosulfate, also known as "hypo," is a common inorganic compound that typically appears as colorless, transparent crystals or a white powder; it is highly soluble in water, a process that absorbs heat. Characterized by strong reducing properties and excellent complexing capabilities, it is widely used in photography, aquaculture, medical detoxification, and industrial manufacturing.

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Technical parameters
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Product Description

Physical And Chemical Properties

1. Appearance: Typically exists as a pentahydrate at room temperature; readily effloresces in dry air.

2. Solubility: Highly soluble in water, forming a weakly alkaline solution; the dissolution process absorbs a significant amount of heat.

3. Chemical properties: Exhibits strong reducing properties and reacts rapidly with oxidizing agents such as iodine (commonly used in iodometric titration); forms soluble complexes with silver ions.

Technical parameters

Quality specification
Iterm	Specification	Result
Sodium thiosulfate	≥98%	98.25%
Water- insoluble substances	≤0.03%	0.02%
Sulfide(Na2S)	≤0.003%	0.001%
The mass of iron(Fe)	≤0.003%	0.001%
Sodium chloride(NaCl)	≤0.20%	0.10%
PH	6.5-9.5	8.1
Conclusion	Qualified

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Product Name: Sodium thiosulfate

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