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7-hydroxy-1,3-naphthalenedisulfonic acid, dipotassium salt
| 7-hydroxy-1,3-naphthalenedisulfonic acid, dipotassium salt |
| Alias |
dipotassium 7-hydroxynaphthalene-1,3-disulfonate; G salt; 2-Naphthol-6,8-Dipotassium Disulfonate; 7-hydroxynaphthalene-1,3-disulfonate dipotassium; Dipotassium 7-Hydroxynaphthalene-1,3-Disulphonate |
| Molecular weight |
380.48 |
| Appearance |
off white to white powder, particle and paste; easily soluble in light blue fluorescence |
| Structural formula |
 |
| Specification |
Index/Type |
Powder |
Paste |
| Appearance |
off white powder or particle |
off white paste |
| Purity(in G salt) |
95.0%min |
90.0%max |
70.0%/min |
| R salt(in 100%G salt) |
0.3%max |
1.0%max |
1.0%max |
| free acid (in H2SO4) |
1.5%max |
2.0%max |
| water insoluble matter |
0.1%max |
0.1%max |
| To use |
for manufacturing of acid azo-color, food material and for manufacturing of dyeing intermediate |
| Packaging |
net weight: 25kg or 50kg woven bag lined with plastic bag |
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