Name: Sodium metabisulfite
CAS NO.: 7681-57-4
Molecular formula: Na2S2O5
Appearance: White crystalline
Specification:
Na2SiO3 H2O quality standards (HG/T2568-94)
|
ITEM
|
NATIONAL QUALITY INDEX |
TESTING RESULT |
|
Sodium oxide(Na2O)% |
50.50±1.00 |
51.44 |
|
Silica(SiO2)% |
46.00±1.00 |
46.43 |
|
Iron(Fe)% |
≤200ppm |
77 |
|
Bulk density(g/cm3) |
1.05-1.35 |
1.23 |
|
Particle Size(20-65mesh)% |
≥93.0 |
99.66 |
|
Whiteness |
≥85 |
|
Na2SiO3 9H2O quality standards (HG/T2568-94)
|
ITEM
|
NATIONAL QUALITY INDEX |
TESTING RESULT |
|
Sodium oxide(Na2O)% |
28.5-30.0 |
28.9 |
|
Silica(SiO2)% |
27.3-29.2 |
27.7 |
|
Iron(Fe)% |
≤0.03 |
0.005 |
|
Water-insoluble substances% |
≤0.2 |
0.05 |
|
Whiteness |
≥75 |
85 |
Na2SiO3 5H2O quality standards (HG/T2568-94)
|
ITEM
|
NATIONAL QUALITY INDEX |
TESTING RESULT |
|
Sodium oxide(Na2O)% |
20.0-22.0 |
21.9 |
|
Silica(SiO2)% |
19.0-22.0 |
21.5 |
|
Iron(Fe)% |
≤0.05 |
0.005 |
|
Water-insoluble substances% |
≤0.30 |
0.05 |
|
Whiteness |
≥70 |
85 |
Application: In wash industry, textile industry, Paper & Printing Industry, ceramic industry, metallurgical industry, construction field etc.
Packing: 25kg in P. P bag or packed according to requirements.
