Complex indicator, colorimetric determination of chromium, titanium, mercury and other metal ions. Organic synthesis intermediates.
Product Name
Disodium 3,6-dihydroxynaphthalene-2,7-disulphonate
Multiple Names
Disodium 3,6-Dihydroxynaphthalene-2,7-Disulphonate;
Sodium 2,7-Dihydroxyl Naphthalene-3,6-Disulfonate;
7-Naphthalenedisulfonicacid,3,6-Dihydroxy-Disodiumsalt;
3,6-Dihydroxynaphthalene-2,7-Disulfonic Acid Disodium Salt;
2,7-Dihydroxynaphthalene-3,6-Disulfonic Acid Disodium Salt;
Disodium 3,6-Dihydroxynaphthalene-2,7-Disulfonate;
Disodium 3,6-Dihydroxynaphthalene-2,7-Disulphonate;
2,7-Dihydroxy-3,6-Naphthalenedisulfonic Acid Disodium Salt;
3,6-Dihydroxynaphthalene-2,7-Disulfonic Acid, Disodium Salt, Tech., 92+%;
(3,6-Dihydroxy-7-Sodiooxysulfonyl-2-Naphthyl)Sulfonyloxysodium
CAS No. 7153-21-1
EC No. 230-499-2
MF No. C10H6Na2O8S2
MW No. 364.2594
Assay Item | Standard |
Form | powder to crysta |
Color | White to Light yellow to Light orange |
Boiling Point | 228.86°C |
Melting Point | 110°C |
Density | 1.7563 |
This product is used to synthesize weak acid dyes and direct dyes
It can also be used as a coupling agent for diazo photosensitive paper to make blueprints
It turns pink when it meets iron, and decomposes into sulfuric acid and salicylic acid at high temperature
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