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SODIUM NITRITE

Sodium Nitrite (SNI)

Having Good quality in 50 Kg / 25 Kg bag

Export Grade (Uncoated)    

Tests

Limits

Method Ref.

Appearance White or slightly yellowish crystalline powder Visual
Purity (On dry basis) by KMnO4 titration 99.00 % w/w Min. NQA 901
Loss on drying by moisture analyzer at 110ºC for 10 min.     0.50 % w/w Max. NQA  513
Alkalinity as Na2CO3 or NaOH by H2SO4 titration 0.20 % w/w Max. NQA  915
Chloride as Cl by Nitrobenzene 0.10 % w/w Max. NQA  508
Sodium Nitrate by PDSA 1.00 % w/w Max. NQA  820
Water insoluble 0.05 % w/w Max. NQA 510
Sulphate as SO4 by turbidity 0.08 % w/w Max. NQA  501
Iron as Fe by Potassium thiocyanate 0.002 % w/w Max. NQA  502
Heavy metal as Pb by visual colourimetric 0.005 % w/w Max. NQA  518
Clarity of 30% aqueous solution It should be clear solution NQA  514
s    
Standard Grade    

Tests

Limits

Method Ref.

Appearance White or slightly yellowish crystalline powder Visual
Purity (On dry basis) by KMnO4 99.0 % w/w Min. NQA 901
Loss on drying  (by
thermal lamp analyser)
0.5 % w/w Max. NQA 513
Alkalinity as Na2CO3 or NaOH by H2SO4 0.3 % w/w Max. NQA 915
Chloride as Cl (by Nitrobenzene) 0.1 % w/w Max. NQA 508
Sodium Nitrate (by PDSA) 1.0 % w/w Max. NQA 820
     
Liquor (25%)    

Test

Limits

Method Ref.

Appearance Slightly hazy greenish yellow solution Visual
Sodium Nitrite by KMnO4 titration 25.0 % w/w Min. NQA 901
Alkalinity as Na2CO3 or NaOH by H2SO4 titration 0.50 % w/w Max. NQA  915
Chloride as Cl by Nitrobenzene 0.20 % w/w Max. NQA  508
Sodium Nitrate by PDSA 4.0 % w/w Max. NQA  820
Iron as Fe by Potassium thiocyanate 0.005 % w/w Max. NQA 502
     
Export Grade (With Anti Caking Agent)    

Test

Limits

Method Ref.

Appearance White or slightly yellowish crystalline powder Visual
Purity (On dry basis) by KMnO4 titration 99.0 % w/w Min. NQA 901
Loss on drying by moisture analyzer at 110ºC for 10 min. 0.50 % w/w Max. NQA  513
Alkalinity as Na2CO3 or NaOH by H2SO4 titration 0.20 % w/w Max. NQA  915
Chloride as Cl by Nitrobenzene 0.10 % w/w Max. NQA 508
Sodium Nitrate by PDSA 1.0 % w/w Max. NQA  820
Water Insoluble 0.05 % w/w Max. NQA  510
Iron as Fe by Potassium thiocyanate 0.002 % w/w Max. NQA  502
Heavy metal as Pb by Visual colourimetric 0.005 % w/w Max. NQA  518
Clarity of 30% aqueous
solution
Clear with frothing material NQA  514
Anticaking agent by turbidity 0.20 % w/w Max. NQA 916

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