Azo Dyes Intermediate Sodium Naphthionate

Product Overview

Description

Product name: Sodium Naphthionate

Molecular formula: N10H8O3NSNa

Molecular weight: 245.23

Nature and use:

Sodium Naphthionate is a greyish-white crystal.
Ashen crystallization, turn into rose-colored gradually among air, very much easy to
dissolve on ink, Do not dissolve it in the ethanol . Product this sulphurate but make by
1-naphthyl-amine , use as the intermedia of the azo dyes mainly.

 

Quality index:

Name of index	Index
	Excellent product	First-class product
Appearance	Ashen crystallization	Ashen crystallization
Total amino %	≥ 75.0	≥ 74.0
1-naphthyl-amine %	≤ 0.02	≤ 0.02
Water insoluble matter %	≤ 0.10	≤ 0.20

Notes:Put in dark,cold and air through place to prevent sun light

 

We have been selling this item for a long time.