|
SPECIFICATION
OF SODIUM META BI SULPHITE (
Code No SMBS01R)
|
|
|
|
Sr.
No.
|
Characteristics
|
Specifications
|
|
1.
|
Physical
Appearance
|
White
Crystalline Powder
|
|
2.
|
Assay
as SO2% by mass
|
65%
Min.
|
|
3.
|
Assay
as Na2S2O5% by mass
|
96%
Min.
|
|
4.
|
PH
of 10% Solution
|
4
to 5.5
|
|
5.
|
Clearity
of 10% Solution
|
Clear
|
|
6.
|
Insoluble
Matter
|
0.05%
Max.
|
|
7.
|
Iron
( as Fe)
|
20ppm
Max.
|
|
8.
|
Heavy
Metal ( as Pb)
|
10ppm
Max.
|
|
9.
|
Thiosulphate
|
0.1%
Max.
|
|
|
|
|
SPECIFICATION
OF SODIUM META BI SULPHITE (
Code No SMBS01P)
|
|
|
|
Sr.
No.
|
Characteristics
|
Specifications
|
|
1.
|
Physical
Appearance
|
White
Crystalline Powder
|
|
2.
|
Assay
as SO2% by mass
|
65%
Min.
|
|
3.
|
Assay
as Na2S2O5% by mass
|
96%
Min.
|
|
4.
|
PH
of 10% Solution
|
4
to 5.5
|
|
5.
|
Clearity
of 10% Solution
|
Clear
|
|
6.
|
Insoluble
Matter
|
0.05%
Max.
|
|
7.
|
Iron
( as Fe)
|
10ppm
Max.
|
|
8.
|
Heavy
Metal ( as Pb)
|
10ppm
Max.
|
|
9.
|
Thiosulphate
|
0.1%
Max.
|
|
|
|
|
SPECIFICATION
OF SODIUM META BI SULPHITE (
Code No SMBS02P)
|
|
|
|
Sr.
No.
|
Characteristics
|
Specifications
|
|
1.
|
Physical
Appearance
|
White
Crystalline Powder
|
|
2.
|
Assay
as SO2% by mass
|
64-65%
|
|
3.
|
Assay
as Na2S2O5% by mass
|
95to96%
|
|
4.
|
PH
of 10% Solution
|
4
to 5.5
|
|
5.
|
Clearity
of 10% Solution
|
Clear
|
|
6.
|
Insoluble
Matter
|
0.05%
Max.
|
|
7.
|
Iron
( as Fe)
|
10ppm
Max.
|
|
8.
|
Heavy
Metal ( as Pb)
|
10ppm
Max.
|
|
9.
|
Thiosulphate
|
0.1%
Max.
|
|
|
|
|
SPECIFICATION
OF SODIUM META BI SULPHITE (
Code No SMBS03P)
|
|
|
|
Sr.
No.
|
Characteristics
|
Specifications
|
|
1.
|
Physical
Appearance
|
White
Crystalline Powder
|
|
2.
|
Assay
as SO2% by mass
|
63-64%
|
|
3.
|
Assay
as Na2S2O5 % by mass
|
93
to 95%
|
|
4.
|
PH
of 10% Solution
|
4
to 5.5
|
|
5.
|
Clearity
of 10% Solution
|
Clear
|
|
6.
|
Insoluble
Matter
|
0.05%
Max.
|
|
|
|
|
SPECIFICATION
OF SODIUM META BI SULPHITE (
Code No SMBS04P)
|
|
|
|
Sr.
No.
|
Characteristics
|
Specifications
|
|
1.
|
Physical
Appearance
|
Creamish
Crystalline Powder
|
|
2.
|
Assay
as SO2% by mass
|
60-63%
|
|
3.
|
Assay
as Na2S2O5 % by mass
|
90%
Min.
|
|
4.
|
PH
of 10% Solution
|
4
to 5.5
|
|
5.
|
Clearity
of 10% Solution
|
Clear
|
|
6.
|
Insoluble
Matter
|
0.1%
Max.
|
|
