ChemicalBook Product Catalog Organic Chemistry Organic fluorine compound 2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt

2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt

Product Name2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt
CAS6428-38-2
CBNumberCB9909461
MFC48H40N13Na3O13S3
MW1172.07481
EINECS229-209-7
MDL NumberMFCD00800410
MOL File6428-38-2.mol

Chemical Properties

EPA Substance Registry System

2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt (6428-38-2)

Safety

TSCA	TSCA listed

2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt Chemical Properties,Usage,Production

Chemical Properties

Gray to black powder. Dissolved in water it is black, in concentrated sulfuric acid it is reddish-purple, and when diluted there is a black-purple precipitate; in concentrated hydrochloric acid there is a black precipitate; in concentrated caustic soda solution there is a dark purple precipitate.

Uses

C.I. Direct black 32 is a good dyeing agent for cotton fabrics.

Preparation

5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled, product to double nitriding, and 2-(3-Aminophenylamino)ethanol (2 Moore) coupled.

Hazard

Moderately toxic. Low toxicity by ingestion.

Properties and Applications

black. Grey to black powder. The strong sulfuric acid for red purple, after dilute black purple precipitation; In strong hydrochloric acid in black precipitation; In the thick of sodium hydroxide solution dark purple precipitation. Mainly used for cotton, such as glue cellulose fiber fabric and silk dyeing and printing. Used for sweet silk and viscose interwoven fabric dyeing.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	4	4	4	3-4		4

References

[1] Sawada K, Ueda M. Adsorption behavior of direct dye on cotton in non-aqueous media[J]. Dyes and pigments, 2003, 58(1): 37-40.

2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt Supplier

Supplier	Tel	Email	Country	ProdList	Advantage
Tanya Exports	+91-9825040588 +91-9825033002	tanactive@gmail.com	Gujarat，India	186	58
Appex Dye Stuff Industries	+91-9974922439	brijesh@appexdyestuff.co.in	Gujarat，India	146	58
Phoenix Colours	+91-9768127681 +91-9819199181	info@phoenixcolours.com	Maharashtra，India	182	58
Hangzhou MolCore BioPharmatech Co.,Ltd.	+86-057181025280; +8617767106207	sales@molcore.com		49709	58
Dynasty Colourants Co., Ltd.	86 0574 27862107 27862719	info@dynasty-color.com		3306	51
Biosynth Biological Technology (Suzhou) Co Ltd	51288865780	sales@biosynth.com		6031	58

6428-38-2(2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-[[7-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3-sulfophenyl]azo]-4-hydroxy-, trisodium salt) Related Search

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