5-Amino-1-naphthalenesulfonic acid

5-Amino-1-naphthalenesulfonic acid Basic information

Product Name:	5-Amino-1-naphthalenesulfonic acid
Synonyms:	5-amino-1-naphthalenesulfonicaci;1-NAPHTHYLAMINE-5-SULFONICACID(LAURENT''SACID);Laurens Acid;Laurents acid~1-Naphthylamine-5-sulphonic acid;1-Amino-5-naphthalenesulfonic acid;1-Aminonaphtalene-5-sulfonic acid, 97%+;5-Aminonaphthalene-1-sulfonic acid, tech. 90%;Laurent's Acid 1-Naphthylamine-5-sulfonic Acid
CAS:	84-89-9
MF:	C10H9NO3S
MW:	223.25
EINECS:	201-571-0
Product Categories:	Intermediates of Dyes and Pigments
Mol File:	84-89-9.mol

5-Amino-1-naphthalenesulfonic acid Chemical Properties

Melting point	>300°C
Boiling point	220°C (rough estimate)
density	1.3588 (rough estimate)
refractive index	1.6500 (estimate)
solubility	Aqueous Base (Slightly), DMSO (Slightly)
form	powder to crystal
pka	pK1: 3.69 (25°C)
color	Purple to Dark purple to Dark red
Water Solubility	Soluble in hot water.
Merck	14,6404
BRN	2214149
CAS DataBase Reference	84-89-9(CAS DataBase Reference)
EPA Substance Registry System	1-Naphthalenesulfonic acid, 5-amino- (84-89-9)

Safety Information

MSDS Information

Provider	Language
SigmaAldrich	English
ALFA	English

5-Amino-1-naphthalenesulfonic acid Usage And Synthesis

Uses	Intermediate of dyestuff
Uses	5-Aminonaphthalene-1-sulfonic acid is an deriva- tizing agents in the precolumn derivatization of some chiral phenoxy acid. Cu(II) based on a dansyl derivative was synthesized with 29.2% overall yield by a seven-step synthetic procedure from the readily available starting material 5-aminonaphthalene-1-sulfonic acid.
Definition	ChEBI: 5-Amino-1-naphthalenesulfonic acid is a naphthalenesulfonic acid.
Purification Methods	Crystallise the acid under nitrogen from boiling water and dry it in a steam oven [Bryson Trans Faraday Soc 47 522, 527 1951]. [Beilstein 14 IV 2800.]

5-Amino-1-naphthalenesulfonic acid Preparation Products And Raw materials

Raw materials	Sulfuric acid-->Nitric acid-->Iron-->Naphthalene-->Magnesium carbonate-->Peri acid-->1-Naphthalenesulfonic acid-->5-nitronaphthalene-1-sulphonic acid-->5-Chloronaphthalene-1-sulfonic acid-->2-naphthylammonium chloride-->N-Acetyl-1-aminonaphthalene-->1-Naphthylamine
Preparation Products	ACID BLACK 24-->Dansyl chloride-->5-(Dimethylamino)-1-naphthalenesulfonic acid-->5-Amino-1-naphthol-->Naphthionic acid-->sodium 5-[(2-hydroxynaphthyl)azo]naphthalenesulphonate-->Direct Red 264-->MORDANT BROWN 1-->tetrasodium 5,5'-[carbonylbis[imino(1-hydroxy-3-sulphonatonaphthalene-2,6-diyl)azo]]bisnaphthalene-1-sulphonate

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