Sodium Metasilicate
Basic information:
CAS NO.6834-92-0
UN NO.3253
Chemical formula:Na2SiO3
Molecular weight:122.06
Character:white powder or crystal
Melting point:1089℃
Solubleness(mg/ml):Soluble in water,insoluble in alcohols and acids
Techical Index(Mass fraction/%):
Metasilicon Pentahydrate granular
|
Items |
Index |
|
Appearance |
White granular crystal |
|
Total alkali(Calculated as Na2O)% |
28.0-30.5% |
|
Silicon dioxide(Calculated asSiO2)% |
27.0-29.0% |
|
Whiteness |
≥85% |
|
Loss on ignition（600℃） % |
43.0±1.0% |
|
Size(16-30 mesh) % |
≥90% |
Sodium Metasilicate anhydrous
|
Items |
Index |
|
Apperance |
White uniform pearl |
|
Sodium Oxide （Na2O）% |
50.50±1.00 |
|
Silicon dioxide（SiO2）% |
46.00±1.00 |
|
Iron（Fe） |
≤200ppm |
|
Bulk density（g/cm3） |
1.05-1.35 |
|
size(18-60mesh)% |
≥93.0 |
|
Dissolution speed( 5% solution at 21℃) |
80seconds |
Sodium Metasilicate nonahydrate
|
Items |
|
Index |
|
Total alkali(Calculatted as Na2O) % |
|
28.0-30.5 |
|
Silicon dioxide(Calculatted asSiO2) % |
|
27.0-29.0 |
|
Iron (Calculatted as Fe) %≤ |
|
0.05 |
|
Water insoluble %≤ |
|
0.03 |
|
Whiteness %≥ |
|
70 |
Uses:
Used for super concentrated washing powder,detergent,metal cleaning agent,food Industry cleaning agent,also used for paper bleaching,cotton cooking,porcelain Clay dispersion,etc.
Package/Capacity of container/storage:
Packing:
Store dry and sealed.