SODIUM META BI SULPHITE

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SODIUM META BI SULPHITE

CAS NO. 7681-57-4

SPECIFICATION OF SODIUM META BI SULPHITE (Co. Code No. M11R)

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 (Co. Code No. M12P)

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 (Co. Code No. M10P)

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 (Co. Code No. M8P)

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 (Co. Code No. M6P)

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.

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