Specification
Formula : Na2SO3
Cas # : 7757-83-7
|
DESCRIPTION |
GRADE I |
GRADE II |
LIMITS |
|
Purity |
99.0% w/w |
95.0 % w/w |
min |
|
Iron |
25 ppm |
100 ppm |
max |
|
pH of 5% solution |
9.00 to 10.00 |
5.00 to 6.00 |
max |
|
Heavy Metals as Lead |
10 ppm |
10 ppm |
max |
|
Matter Insoluble in Water |
0.01% |
0.01% |
max |
|
Appearance |
White crystalline powder |
White to dull white Powder |
|