Regarding Aluminium Hydroxide for artifical marble,toothpaste abradant,flame retardant,Artificial Onyx Filler, etc,spec:

Physical properties :
Appearance: White powder 
Molecular formula: Al(OH)3  
Molecular Weight: 78.0                                
CAS No.: 21645-51-2
Bulk Density(g/cm3):Loosed: 1.1
                   Packed: 1.3
Density(g/cm3): 2.42
Shelf life: Longer than 2 years.

chemical properties :
Al(OH)3: 99.6% min.
Al2O3: 65.1% min.
SiO2: 0.03% max.
Fe2O3: 0.02% max.
Na2O: 0.2% max.
L.O.I.: 35% max.
Moisture: 0.1% max.
PH: 7.5~10
Whiteness:93% min.
Particle Size:D50: 20~35um
Packing: in 25 kgs bags,

Best Regards
 
Yang Haitao
 
HENAN KINGWAY CHEMICALS CO.,LTD.
Tel:86-371-65336567,
Fax:86-371-65336188
Web:
Email: kingway@hnkingway.com