Ammonium thiosulfate, 96%

Description

CAS: 7783-18-8 | (NH₄)₂S₂O₃

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.

Specifications

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

• Melting Point: ∼180°C (decomposition)
• pH: 6.0 to 6.5
• Quantity: 100 g
• Merck Index: 14,562
• Solubility Information: Soluble in water,slightly soluble in acetone. Insoluble in ethanol and diethyl ether.
• Formula Weight: 148.2
• Percent Purity: ≥96%
• Sensitivity: Hygroscopic
• Density: 1.64
• Chemical Name or Material: Ammonium thiosulfate

Safety and Handling

EINECSNumber	231-982-0
RTECSNumber	XN6465000
TSCA	Yes
Recommended Storage	Ambient temperatures; Store under Nitrogen

SDS

RUO – Research Use Only