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Alias:Scha ffer's salt(Schaffer's Salt)
Molecular formula:C10H7O4SNa(K)
Molecular weight:246.22(sodium salt),262.32(potassium salt)
Use:It can be used in dyeing internediate and to produce food dyepigment sunset yellow.
Specification:
|
Index |
Appearance |
Content |
Purity(HPLC) |
2-Naphthol |
(HPLC) |
don's(HPLC) |
insoluble maner in water |
Fe |
pb |
Hg |
As |
|
Specification |
|
Sodium salt |
Firsts |
white powder |
≥80% |
≥99% |
≤0.1% |
≤0.3% |
≤0.1% |
≤0.1% |
≤25ppm |
≤5ppm |
≤1ppm |
≤1ppm |
|
Seconds |
white powder |
≥80% |
≥99% |
≤0.2% |
≤0.5% |
≤0.1% |
≤0.1% |
≤25ppm |
≤5ppm |
≤1ppm |
≤1ppm |
|
Potassium salt |
Firsts |
white crvstal |
≥95% |
≥99% |
≤0.1% |
≤0.3% |
≤0.1% |
≤0.1% |
≤20ppm |
≤5ppm |
≤1ppm |
≤1ppm |
|
Seconds |
white crvstal |
90% |
≥99% |
≤0.2% |
≤0.5% |
≤0.1% |
≤0.1% |
≤20ppm |
≤5ppm |
≤1ppm |
≤1ppm |
Packing:25kg woven bag lined with plastic foil or 50 kg fiber can lined with plastic foil.
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