ALUMINUMPOTASSIUM SULFATE12-HYDRATE with CAS 7784-24-9

what is of ALUMINUMPOTASSIUM SULFATE12-HYDRATE with CAS 7784-24-9?

A hydrate resulting from the the formal combination of anhydrous potassium aluminium sulfate with 12 mol eq. of water.

1.Quick details of ALUMINUMPOTASSIUM SULFATE12-HYDRATE with CAS 7784-24-9

Classification:Sulphate Type:Aluminum Sulphate CAS No.:7784-24-9 Other Names:Potassium Alum / Aluminium Potassium Sulphate MF:AlK(SO4)2.12H2O EINECS No.:5637-689-7 Place of Origin:Tianjin, China Grade Standard:Industrial Grade Purity:99.2%min potash alum Appearance:white powder or crystal / granlar Application:water treatment Model Number:potash alum product name:potash alum potash alum:99.2% moisture:1% Fe:0.01%max As:0.0002% HS code:2833301000 solubility in water:14.00 g/100 mL melting poit:92-93 °C Molar mass:258.205 g/mol

2.Description of ALUMINUMPOTASSIUM SULFATE12-HYDRATE with CAS 7784-24-9

Project	Content
Aluminum potassium sulfate (dry basis)	≥ 99.2%
Moisture	≤ 1.0%
iron (Fe)	≤ 0.01%
heavy metals (Pb)	≤ 0.002%
arsenic (As)	≤ 0.0002%
water insoluble matter	≤ 0.2%

3.Application

Aluminium potassium sulfate dodecahydrate is a white crystal that is soluble in water. It is made by roasting alunite in a furnace and then harvesting the product by crystallization. Aluminium potassium sulfate dodecahydrate was used to harden gelatin emulsions by introduction, by bathing the exposed plates prior to development, or by use in the fixing bath. Mixed with citric or other acids, it was also used as a clearing bath to remove developer stains in negatives.