High-purity Aluminum ammonium sulfate 
MF:ALNH₄(SO₄)₂.12H₂O
Properties:colorless glasslike crystal to white granule or powder 
Use: The raw material for the high-purity alumina, ruby and sapphire,relative reagent production;also used in food, preserves, water purity, disinfection, rubber, leather, washing powder, livestock feed, pencils.
Standard: HG2917-1999
Packing:50kg 25kg, mark available upon request woven bag lined with plastic bag

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