Product Name:

Ammonium Thiosulfate

WCode:

01-026

CAS No.

7783-18-8

Molecular Formula:

(NH4)2S2O3

Formula Weight:

148.20

           

Physical and Chemical Properties

Physical State

White or colorless crystals

Melting Point

150 °C

Boiling Point

Decomposes

Specific Gravity

1.679

Solubility in Water

Miscible

Flash Point

Non-Flammable

Stability

Stable under ordinary conditions of use and storage

 

 

Applications

Ammonium Thiosulphate is used as the most common component of photographic fixing agent especially for rapid development. It is used as a nitrogen and sulphur fertilizer. It is used to enhance N utilization efficiency of fertilizers such as urea ammonium nitrate. 

 

Sales Specification

Liquid Form

Appearance:

Colorless transparent liquid

Assay:

56-60%

Sulfite:

0.6% Max

Basicity:

0.3-1.5%

Heavy metals:

10 PPM Max

Fe:

10 PPM Max

Residue on ignition:

0.1% Max

SG:

1.310-1.335

 

Packing:

In 270 KG plastic drum

 

Powder Form

Appearance:

White crystal

Assay:

98% Min

Ammonium Sulfate

1.0% Max

Basicity:

0.4% Max

Heavy metal:

20 PPM Max

Fe:

20 PPM Max

Sulfid (As S)

0.0002% Max

Residue on ignition

0.2% Max

 

Packing:

In 25 KG plastic woven bag