Ammonium Bisulfite, also known as ammonium hydrogen sulfate, is a white, crystalline solid when it is completely pure, with formula (NH4)HSO4. Pure ammonium bisulfite is a white crystalline solid. Commercially, aqueous liquid form is common. Ammonium bisulfite’s reductive and sulfonating properties provide versatile applications. It is used as an oxygen scavenger to eliminate the dissolved oxygen in waste water and in pipes. Ammonium bisulfite is a reductive bleaching agent.


Item Index
Assay % 58-62
Appearance Transparent yellow liquid
Density (20℃) g/cm3 1.33 – 1.38
pH 4.5 – 5.5

Soluble in Water

Non Soluble in Hydrocarbon Solvents

The 62% non-catalyzed Ammonium Bisulfite is designed for controlling corrosion due to atmospheric oxygen. Ammonium bisulfite may be added to fresh or brine water to control oxygen corrosion. Precaution should be taken when injecting this product in conjunction with other chemicals. The products should first be tested for compatibility. This product should not be used with other acidic or chlorinated solutions. Exposure to the atmosphere will cause crystallization of this product. Keep drum tightly sealed and stored in a cool area away from acids, ignition sources, and other strong oxidizers.

Package and Storage:
200L plastic drum, IBC (1000L), customers’ requirement. Storage for ten months in shady room and dry place.

Safety protection:
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.