Ammonium thiosulfate, 96%, Thermo Scientific Chemicals

Product Code	Brand	Quantity
11394599	Thermo Scientific Alfa Aesar A10190.22	100 g
11429502	Thermo Scientific Alfa Aesar A10190.36	500 g
11439502	Thermo Scientific Alfa Aesar A10190.0E	2500 g

Description

Ammonium thiosulfate finds application for leaching of gold and silver since it forms strong complexes. It is widely utilized as a photographic fixing agent, which acts quicklier than sodium thiosulfate fixers. It serves as a fertilizer. It acts as an additive to coal-waste mixtures to inhibit the formation of dangerous dioxins and furans. It is used as an analytical reagent in laboratories.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Ammonium thiosulfate finds application for leaching of gold and silver since it forms strong complexes. It is widely utilized as a photographic fixing agent, which acts quicklier than sodium thiosulfate fixers. It serves as a fertilizer. It acts as an additive to coal-waste mixtures to inhibit the formation of dangerous dioxins and furans. It is used as an analytical reagent in laboratories.

Solubility
Soluble in water, slightly soluble in acetone. Insoluble in ethanol and diethyl ether.

Notes
Hygroscopic. Incompatible with strong oxidizing agents, acids, magnesium and aluminum.

Chemical Identifiers

• CAS: 7783-18-8
• Molecular Formula: (NH₄)₂S₂O₃
• MDL Number: MFCD00015965
• Synonym: ammonium thiosulphate, thiosulfuric acid h2s2o3 , diammonium salt, thiosulfuric acid h2s2o3 , ammonium salt 1:2, diammonium hypo, acmc-1bhnz, ammoniumthiosulfate, dsstox_cid_9703, dsstox_rid_78814, dsstox_gsid_29703, diammonium thiosulphate

Specifications

• Melting Point: ∼180°C (decomposition)
• pH: 6.0 to 6.5
• MDL Number: MFCD00015965
• Synonym: ammonium thiosulphate, thiosulfuric acid h2s2o3 , diammonium salt, thiosulfuric acid h2s2o3 , ammonium salt 1:2, diammonium hypo, acmc-1bhnz, ammoniumthiosulfate, dsstox_cid_9703, dsstox_rid_78814, dsstox_gsid_29703, diammonium thiosulphate
• Formula Weight: 148.2
• Sensitivity: Hygroscopic
• Chemical Name or Material: Ammonium thiosulfate

• CAS: 7783-18-8
• Molecular Formula: (NH₄)₂S₂O₃
• Merck Index: 14,562
• Solubility Information: Soluble in water,slightly soluble in acetone. Insoluble in ethanol and diethyl ether.
• Percent Purity: ≥96%
• Density: 1.64

Safety and Handling

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Recommended Storage : Ambient temperatures; Store under Nitrogen

RUO – Research Use Only