7-hydroxynaphthalene-1,3-disulfonic acid hydrate

Name	7-hydroxynaphthalene-1,3-disulphonic acid
Synonyms	-Naphthol-disulphonicacid 2-Naphthol-6,8-Disulfonic Acid 2-NAPHTHOL-6,8-DISULFONIC ACID 7-hydroxy-3-naphthalenedisulfonicacid 2-Hydroxynaphthalene-6,8-disulfonicacid 7-Hydroxy-1,3-naphthalenedisulfonicacid 7-hydroxynaphthalene-1,3-disulphonicacid 7-hydroxynaphthalene-1,3-disulfonic acid 7-hydroxynaphthalene-1,3-disulphonic acid 7-hydroxynaphthalene-1,3-disulfonic acid hydrate
CAS	118-32-1
EINECS	204-245-6
InChI	InChI=1/C10H8O7S2/c11-7-2-1-6-3-8(18(12,13)14)5-10(9(6)4-7)19(15,16)17/h1-5,11H,(H,12,13,14)(H,15,16,17)

Molecular Formula	C10H8O7S2
Molar Mass	304.3
Density	1.7421 (rough estimate)
Boling Point	415.13°C (rough estimate)
Refractive Index	1.6000 (estimate)
Physical and Chemical Properties	White patchy or prismatic crystals or gray-white powder. Very soluble in water, soluble in water, soluble in dilute. Deliquescence. The product of the sodium or potassium salt G salt (C10H6K2O7S2), white needle-like crystals, soluble in water. Slightly purple in the light lye.

EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Use	used as dye intermediate, is an important coupling component, and diazo component coupling production of acid red 3R, acid complex Violet 5RW, weak acid Red G and other dyes, can also be prepared by dye intermediate gamma acid.
production method	is obtained by sulfonation and salting-out of 2-naphthol, and R acid is by-produced. Raw material consumption quota: 2-naphthoic acid 760kg/t, sulfuric acid (98%)500kg/t, potassium chloride (93%)940kg/t, fuming sulfuric acid (including SO 320%)1250kg/t.

Last Update：2024-04-10 22:29:15

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7-hydroxynaphthalene-1,3-disulfonic acid hydrate Request for Quotation