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2-Naphthol-6,8-Disulfonic Acid

2-Naphthol-6,8-Disulfonic acid / CAS : 118-32-1

Appearance White flakes or prismatic crystals or greyish-white powder. Highly soluble in water, soluble in water, soluble in dilute solutions. Hygroroscopic. The sodium or potassium salt of this compound is called G salt (C10H6K2O7S2), which is a white needle-like crystal, highly soluble in water. It appears slightly purple in dilute alkaline solutions. UN -
HS 29041000 DG Class -
Synonyms 2-Hydroxynaphthalene-6,8-Disulfonic acid; G Acid; 2-Hydroxy-6,8-Naphthalenedisulfonic acid; 7-Hydroxy-1,3-Naphthalenedisulfonic acid; 2-Hydroxynaphthalene-6,8-Disulfonate
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Properties

Summary

Formula
C10H8O7S2
Molecular Mass
304.3
Exact Mass
303.97100
PSA
145.73000
Logp
3.20040
IUPAC
7-hydroxynaphthalene-1,3-disulfonic acid
SMILES
C1=CC(=CC2=C(C=C(C=C21)S(=O)(=O)O)S(=O)(=O)O)O

Attribute classification

Category
Dyestuffs and Pigments > Dye Intermediates

Chemical and Physical Properties

Density
1.816g/cm3
Boiling Point
415.13°C (rough estimate)
Appearance
White flakes or prismatic crystals or greyish-white powder. Highly soluble in water, soluble in water, soluble in dilute solutions. Hygroroscopic. The sodium or potassium salt of this compound is called G salt (C10H6K2O7S2), which is a white needle-like crystal, highly soluble in water. It appears slightly purple in dilute alkaline solutions.

Export information

HS Code
29041000
Export Rebate
13%

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