Technical Specification of Sodium Bisulphite

Sodium Bisulphite

Formula	NaHSO3
Molecular Weight	104
Assay as (Na2S2O5)	95 % Min.
Assay as (SO2)	62 % Min.
Solubility (10 % Aquous Soln)	V. S. Hazy to clear solution.
pH Value of 5% Solution	3.5 to 4.5

Description:

White crystalline powder, free from extraneous Matter with a faint odour of sulphur dioxide gas.

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE bag with extra liner inside.

Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.

Technical Specification SODIUM SULPHITE

Appearance	White free flowing crystalline material
10 % Solution	Clear and colorless
pH	8 to 10
Free Alkali	0.02 % Min.
Sodium Thiosulphate	Passes
Heavy Metals	NIL
Assay	95 % Min.

Technical Specification of Sodium Metabisulphite – Pure Grade

Sodium Metabisulphite – Pure Grade

Formula	Na2S2O5
Molecular Weight	190.1
Assay as (Na2S2O5)	96 % Min.
Assay as (SO2)	64 % Min.
Solubility (10 % Aquous Soln)	C lear & colourless solution.
pH Value of 5% Solution	3.5 to 4.5

Description:

White crystalline powder, free from extraneous Matter with a faint odour of sulphur dioxide gas.

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE bag with extra liner inside.

*Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.

Technical Specification of Sodium Metabisulphite – Photo Grade

Sodium Metabisulphite – Photo Grade

Formula	Na2S2O5
Molecular Weight	190.1
Assay as (Na2S2O5)	95 % Min
Assay as (SO2)	64 % Min
Solubility (10 % Aquous Soln)	V. S. Hazy to clear solution.
pH Value of 5% Solution	3.5 to 4.5

Description:

White crystalline powder, free from extraneous Matter with a faint odour of sulphur dioxide gas.

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE bag with extra liner inside.

*Special packaging requirements can be accommodated.


The product is tested by our standard analytical method.

Technical Specification of Sodium Thiosulphate Anhydrous

Sodium Thiosulphate Anhydrous

Formula	(Na2) S2O3
Molecular Weight	158
Assay as (Na2)S2O3	98 % Min.
20 % Solubility	Clear
pH of 10 % Solution	6.5 To 8.5

Description:

White powder free from foreign particles.

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE Bag with extra liner inside.

*Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.

Technical Specification of Sodium Formaldehyde Bisulphite

Sodium Formaldehyde Bisulphite

Formula	CH2 (OH) SO3Na
Molecular Weight	134.1
10 % Solubility	Clear
Formaldehyde	98 % Min
Assay	Less than 1 %
pH	6.5 to 8.0 pH

Description:

White, Shining, Crystalline material

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE bag with extra liner inside.

*Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.

Technical Specification of Potassium Sulphite Solution

Potassium Sulphite Solution

Formula	K2SO3
Molecular Weight	158.27
Purity	45 % W/W
Impurities Potassium	0.8 % Max.
Specific Gravity	1.447 TO 1.465
Assay as K2SO3	45 % W/W
pH	9 TO 10 pH
Iron	0.01%
Thiosulphate	0.01%

Description:

Colorless OR Pale yellow clear solution.

STANDARD PACKING:

• 250 Kgs. HDPE Drum
• 30 Kg. HDPE carboys
• 1000 Liters Intermediate Bulk container (IBC)
• 20 MT Bulk Liquid Bag (Flexi bag)

*Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.

Technical Specification of Ammonium Sulphite Solution

Ammonium Sulphite Solution 40%

Formula	(NH4)2 SO3
Molecular Weight	116
Assay as (NH4)2 SO3	40 % Min.
Specific Gravity	1.18 to 1.210
pH	7 to 9

Description:

Clear solution having very slight tinge with faint smell of ammonia.

STANDARD PACKING :

• 250 Kgs. HDPE Drum
• 30 Kg. HDPE carboys
• 1000 Liters Intermediate Bulk container (IBC)
• 21 MT Bulk Liquid Bag (Flexi bag)

Special packaging requirements can be accommodated. 
The product is tested by our standard analytical method.

Sodium Thiosulphate 

Formula	(Na2) S2O3
Molecular Weight	158
Assay as (Na2)S2O3	98 % Min.
20 % Solubility	Clear
pH of 10 % Solution	6.5 To 8.5

Description: 

White powder free from foreign particles.

STANDARD PACKING :

• 25 Kg. / 50 Kg. HDPE Bag with extra liner inside.

*Special packaging requirements can be accommodated.

The product is tested by our standard analytical method.