Sodium Nitrite (SNI)
| 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 |
Please click here for the Material Safety Data Sheet (MSDS).
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