4-Hydroxy-3-(1-naphthalenylazo)-2,7-naphthalenedisulfonic acid disodium salt

CAS NO.：5858-64-0
Molecular Weight: 0
MDL number: MFCD00266987
SAFETY DATA SHEET (SDS)
Update Date: 2023-05-04 15:16:18

What is 4-Hydroxy-3-(1-naphthalenylazo)-2,7-naphthalenedisulfonic acid disodium salt?

Preparation

Naphthalen-1-amine diazo, coupled with 4-Hydroxynaphthalene-2,7-disulfonic acid.

Properties and Applications

blu-ray red. For product red is soluble in water, soluble in ethanol in red. The strong sulfuric acid for blue, purple for red after diluted. In aqueous solution to join strong hydrochloric acid wine red precipitate; Add sodium hydroxide into orange brown.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
Standard	Light Fastness	Fading	Stain	Persperation Fastness	Fading	Stain	Fading	Stain
ISO	3	2	3-4	3	1	2	2	1

Safety information for 4-Hydroxy-3-(1-naphthalenylazo)-2,7-naphthalenedisulfonic acid disodium salt

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