Ferrous sulphate, also known as copperas, crystal of light blue or green. It can be used as flocculating agent, reducing agent, and precipitation agent for various kinds water treatment, not only obvious effect, but also cheaper.


The purpose of Ferrous Sulphate:

1.    As reducing agent:

l  Formula:



Ferrous sulphate is a strong reducing agent, it can transfer hexavalent chromium to trivalent chromic ion by reduction reaction. Then adjust PH value by alkalize, transform trivalent chromic to sediment of chromium hydroxide. There is no toxic gas be generated in the whole process.

l  Ferrous sulphate also can adjust the pH of water


2.    As flocculating agent:

l  Formula:


Resultant Fe(OH)3 can adsorb impurities to purify the water.

l  Ferrous sulphate has strong decolorization ability. It can discolor the textile waste such as textile printing, water scrubbing, etc.

l  Ferrous sulphate can dislodge heavy metal ion, and sterilization, etc.

Advantage: sedimentation speed, better flocculating effects, and non-toxic.


3.    As precipitation agent

l  Formula:

FeSO4 + H2S = FeS↓ + H2SO4

Generate precipitate with sulfide, phosphate, etc. and thus dislodge ion of sulfide, phosphate, etc.



Baise Johnson Chemical Co., ltd. focus on the production of Ferrous Sulphate for 20 years, our main product are Ferrous Sulphate Monohydrate (FeSO4.H2O) and Ferrous Sulphate Heptahydrate (FeSO4.7H2O). Johnson Chemical not only have great attention of product quality but also have competitive price. And already authenticated by ISO9001 and Alibaba. If you have any inquiry, please do not hesitate to contact us or visit us in China. 

Contact information:





     Email: info@johnsonchemical.com

Tel: 0086-771-2780078

Address: Baise Liutang Aluminium Industry Zone, Baise City, Guangxi, China PR.


Ferrous Sulphate for Water Treatment

FeSO4 can used as agent of flocculating, reducing, etc. for water treatment.