Iron Free Aluminium Sulfate

Brief Descript

Iron-free aluminum sulfate is a white crystal, the specific gravity is 1.69, easy to absorb moisture and agglomeration in the air for a long time. Dehydration temperature is 86.5 degrees Celsius, can dissolve in water, acid and alkali, insoluble in alcohol, the aqueous solution is acidulous.




Al2O3 %



Fe %



Water insoluble %



PH Value



1.Water effluent treatment system It’s used for purification wastewater treatment by settling of impurities by means of precipitation and flocculation.
2.Paper Industry It helps in sizing of paper at neutral and alkaline pH, thus improving paper quality (reducing spots and holes and improving sheet formation and strength) and sizing efficiency.
3.Textile Industry It is used for color fixing in Naphthol based dyes for cotton fabric.
4.Other Uses Leather tanning, lubricating compositions, fire retardants; decolorizing agent in petroleum, deodorizer; food additive; firming agent; dyeing mordant; foaming agent in firefighting foams; fireproofing cloth; catalyst; pH control; waterproofing concrete; aluminum compounds, zeolites etc.