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As a leader manufacturer of alum salts in China. Hengyang Jianheng Industry Development Company is a creator and editor member of the national standard of aluminumu sulfate GB31060-2014 and poly aluminum chloride GB/T22627-2014, food additives potassium alum GB.1886.229-2016, and ammonium alum GB25592-2010.


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Aluminum Potassium Sulfate(potassium alum/potash alum)
Relative Molecular Weight:474.39
CAS NO,: 7784-24-9
EINECS No.:5637-689-7
HS CODE.: 2833301000
Appearance: lump, white crystal, white powder 
Properties:Colorless, transparent, particle or crystalline powder, odorless, nontoxic, tastes slightly sweet and puckery, astringent, easily soluble in water, its water solution appears acid,is would lose crystal water and become white powder on heating 
1)Food industry: food fermentation, vermicelli processing, salted aquatic products, 
food preservative and additive.
2)Chemical Industry: Water Flocculant, sizing of paper, Painting and dyeing of coating, drug, making of paint and leather, coagulant, processing of fiber board and rubber processing, Seed disinfection.
Packaging:PP/PE 50kg/bag;25kg/bag; 25-27MT /20'FCL container.
Storage:shady, cool and ventilated environment
Ammonium Aluminum Sulfate(Ammonium alum)
Relative Molecular Weight:453.08
CAS NO,: 77784-26-1
HS CODE.: 2833309000
Appearance: lump, white crystal, white powder
Properties:colorless & transparent or semitransparent lump or powder.
1)Food industry: Buffering agents and leavening agents in food-grade products. 
2)Chemical Industry: Water Flocculant, aluminum tanning agents and after-treating agents for leather tanning in the leather industry, dyeing agents,Astringents,mordants etc.
Standard No. of Potassium alum:GB1895-2004
Project name Standard indicators Test results
Potassium aluminum sulfate [KAl (SO4) 2.12 H2O] content ≥99.2% 99.50%
Heavy metals(as Pb>) content ≤0.002% <0.002%
Water Insoluble Matter ≤0.2% 0.1%
Lead (Pb) content ≤0.001% 0.0003%
Arsenic (As) content ≤0.0002% <0.0002%
Fluorine (F) content ≤0.003% <0.003%
Ammonium Compliance testing Compliance testing
Moisture content ≤1.0% 0.80%
Standard No. of Ammonium Alum:GB25592-2010

Project name

Standard indicators

Lotus alum Test results

Aluminium ammonium sulfate [NH4Al (SO4) 2.12 H2O]content



Heavy metals (as Pb) content



Water Insoluble Matter



Plumbum(Pb) content



Arsenic (As) content



Fluorine (F) content



Selenium (Se) content



Moisture content