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AMMONIUM THIO SULPHATE
CAS NO. 7783-18-8
 

SPECIFICATION OF AMMONIUM THIO SULPHATE (Crystal) (Co. Code A3)

 
 

Sr.
No.

Characteristics

Specifications

1.

Physical Appearance

White Crystall

2.

Assay as (NH4)2S2 O3% by mass.

95  to 97% Min.

3.

PH of 10% Solution

6 to 8PH

4.

Iron ( as Fe)

50ppm Max.

5.

Heavy Metal ( as Pb)

20ppm Max.

 6.

Sulphite[as(NH4)2SO3], % by mass   

2.0% Max.
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SPECIFICATION OF AMMONIUM THIO SULPHATE (Crystal) (Co. Code A4)

 

Sr.
No.

Characteristics

Specifications

1.

Physical Appearance

White Crystal

2.

Assay as (NH4)2S2 O3% by mass.

90  to 94 % Min.

3.

PH of 10% Solution

6 to 8PH

4.

Iron ( as Fe)

50ppm Max.

5.

Heavy Metal ( as Pb)

20ppm Max.

 6.

Sulphite[as(NH4)2SO3], % by mass   

2.0% Max.
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SPECIFICATION OF AMMONIUM THIO SULPHATE - (Solution) (Co. Code A1)

 

Sr.
No.

Characteristics

Specifications

1.

Physical Appearance

Clear and Colourless Solution

2.

Assay as (NH4)2S2 O3% by mass.

59  to 61% Min.

3.

PH of 10% Solution

7-8.5PH

4.

Iron ( as Fe)

10ppm Max.

5.

Heavy Metal ( as Pb)

10ppm Max.

 6.

Specific Gravity

1.32-1.34

7.

Sulphite[as(NH4)2SO3], % by mass   

1.0% Max.
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SPECIFICATION OF AMMONIUM THIO SULPHATE (Solution) (Co. Code A2)
 

Sr.
No.

Characteristics

Specifications

1.

Physical Appearance

Clear and Colourless Solution

2.

Assay as (NH4)2S2 O3% by mass.

55 to 58% Min.

3.

PH of 10% Solution

7-8.5PH

4.

Iron ( as Fe)

10ppm Max.

5.

Heavy Metal ( as Pb)

10ppm Max.

 6.

Specific Gravity

1.32-1.34

7.

Sulphite[as(NH4)2SO3], % by mass   

1.0% Max.
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