2-Naphthol-3,6-disulfonic acid
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2-Naphthol-3,6-disulfonic acid
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CAS No:
148-75-4
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Formula:
C10H8O7S2
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Chemical Name:
2-Naphthol-3,6-disulfonic acid
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Synonyms:
2,7-Naphthalenedisulfonic acid,3-hydroxy-;3-Hydroxy-2,7-naphthalenedisulfonic acid;Acid Chrome Black V;Magracrom Black V;β-Naphtholdisulfonic acid R;β-Naphthol-3,6-disulfonic acid;2-Naphthol-3,6-disulfonic acid;R acid;2-Hydroxy-3,6-naphthalenedisulfonic acid;2-Hydroxy-naphthalene-3,6-disulphonic acid;3-Hydroxynaphthalene-2,7-disulphonic acid
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CAS No:
2-Naphthol-3,6-disulfonic acid Basic Attributes
304.3
304.30
205-724-2
UHI9372R49
DTXSID6045032
2908999090
2-Naphthol-3,6-disulfonic acid Use and Manufacturing
It is derived from the sulfonation of 2-naphthol. In addition to R acid, there is also G acid. The sulfonate is salted out with sodium chloride to obtain the R salt. In industrial production, R salt is a by-product of G salt. After 2-naphthol is sulfonated with sulfuric acid to produce G acid and R acid, the sulfonate is diluted and salted out with potassium chloride to make the G salt precipitate out pioneeringly (process See 26250). The remaining waste acid solution is salted out with sodium chloride to obtain R salt. Raw material consumption quota: G salt waste acid 35000kg/t, table salt (above 90%) 14000kg/t.
This product is an important intermediate for food coloring, azo dyes, and functional colorings. Also used as an intermediate for fluorescent indicators and many other reagents.
2,7-Naphthalenedisulfonic acid, 3-hydroxy-: INACTIVE
Computed Properties
Molecular Weight:304.3
XLogP3:0.9
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:7
Rotatable Bond Count:2
Exact Mass:303.97114494
Monoisotopic Mass:303.97114494
Topological Polar Surface Area:146
Heavy Atom Count:19
Complexity:527
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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