Sodium 4-amino-1-naphthalenesulfonate

CAS No.：130-13-2

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Sodium 4-amino-1-naphthalenesulfonate Basic information

Product Name:	Sodium 4-amino-1-naphthalenesulfonate
Synonyms:	SODIUM NAPHTHIONATE;SODIUM NAPTHIONATE;SODIUM 1-NAPHTHYLAMINE-4-SULFONATE;SODIUM 4-AMINO-1-NAPHTHALENESULFONATE;PARA-NAPHTHIONIC ACID, NA SALT;NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT;NAPHTHIONIC ACID SODIUM SALT;NAPHTHIONIC ACID SODIUM SALT 0.5-WATER
CAS:	130-13-2
MF:	C10H10NNaO3S
MW:	247.24
EINECS:	204-975-5
Product Categories:	Intermediates of Dyes and Pigments;bc0001
Mol File:	130-13-2.mol

Sodium 4-amino-1-naphthalenesulfonate Chemical Properties

Melting point	280 °C (dec.)(lit.)
density	1.6703
storage temp.	Store below +30°C.
form	Crystalline
color	White to Gray to Brown
PH	6.8-7.0 (10g/l, H2O, 20°C)
Merck	14,6403
InChIKey	JWSRMCCRAJUMLX-UHFFFAOYSA-M
Dissociation constant	0 at 30℃
CAS DataBase Reference	130-13-2(CAS DataBase Reference)
EPA Substance Registry System	4-Amino-1-naphthalenesulfonic acid sodium salt (130-13-2)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26
WGK Germany	3
F	3-8-23
HS Code	29214500

MSDS Information

Provider	Language
Sodium 4-amino-1-naphthalenesulfonate	English

Sodium 4-amino-1-naphthalenesulfonate Usage And Synthesis

Chemical Properties	grayish white crystalline powder
Uses	Riegler’s reagent for nitrous acid, manufacture of dyestuffs.
Preparation	The preparation of Sodium 4-amino-1-naphthalenesulfonate is as follows:To a suspension of 4-amino-l -naphthalene sulfonic acid (10.Og, 44.8 mmol) in 10 ml MeOH was added 5 N NaOMe (9 ml). The mixture was sonicated to effect complete solution. The solvent was evaporated to provide the sodium salt of -amino-1- naphthalene sulfonic acid as a white solid. This solid was suspended in 100 ml acetic anhydride and heated at 110 °C for 2 1/2 h. Adding some MeOH to the cooled mixture and co-evaporating with 3x100 ml toluene gave the Na-salt of 4-acetamidonaphthalene-l -sulfonic acid as a white powder.

Sodium 4-amino-1-naphthalenesulfonate Preparation Products And Raw materials

Raw materials	1-Naphthylamine-->Naphthionic acid-->Congo Red
Preparation Products	Acid Red 27-->Acid Red 18-->1-NAPHTHOL-4-SULFONIC ACID SODIUM SALT-->5-Amino-1-naphthol-->Biphenyl

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