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Reactive Orange 5

Reactive Orange 5 structure

CAS No.: 70210-21-8

Chemical Name:: Reactive Orange 5

Synonyms: Brill Orange K-GN;Concion Orange P-G;Kayacion Orange P-G;Evercion Orange P-G;Reactive Orange K-GN;Xiron Brilliant Orange G-HD;Sumifix Brilliant Orange H-G;Kayacion Orange P-G Liquid 20;Chemictive Brilliant Orange RH;Drimarene Brilliant Orange Z-GH

CBNumber:: CB4875622

Molecular Formula:: C26H17ClN7Na3O10S3

Molecular Weight:: 788.07139

MDL Number:

MOL File:: 70210-21-8.mol

MSDS File:: SDS

Last updated:2026-05-12 09:13:37

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Reactive Orange 5 Properties

Density	1.484[at 20℃]
Water Solubility	139g/L at 20℃
LogP	-2 at 23℃
EPA Substance Registry System	2-Naphthalenesulfonic acid, 7-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[(2-sulfophenyl)azo]-, trisodium salt (70210-21-8)

SAFETY

Risk and Safety Statements

TSCA	TSCA listed
REACH Registrations	Active

Reactive Orange 5 Chemical Properties, Uses, Production

Chemical Properties

Orange powder. Solubility in water (50℃) is 70g/L. Aqueous solution is golden yellow, add 1mol/L sodium hydroxide to dark yellow, then add insurance powder and warm to light yellow, then add sodium perborate is still light yellow. In concentrated sulfuric acid, it is dark reddish sauce color, with precipitation, after dilution, it is golden yellow. Golden yellow in concentrated nitric acid, light yellow after dilution.

Uses

Reactive Orange 5 can be used for dyeing and printing of cotton, linen, viscose and other fabrics

Flammability and Explosibility

Not classified

Synthesis

Reactive Orange 5 was synthesized by condensation and coupling reaction of aniline-2,5-bissulfonic acid, J acid, cyanuric chloride and m-aminobenzenesulfonic acid.

Reactive Orange 5 Preparation Products And Raw materials

Raw materials

J acid Sodium nitrite Metanilic acid Aniline Reactive Orange X-GN

Cyanuric chloride

1of2

Preparation Products

Reactive Orange 5 Suppliers

Global Suppliers ( 19)

Supplier	Tel	Email	Country	ProdList	Advantage
Winchem Industrial Co. Ltd	0574-83851061	info@win-chemical.com	China	500	55
The future of Shanghai Industrial Co., Ltd.	021-61552785	sales@shshiji.com	China	9531	55
Alfa Chemistry	1-516-6625404	support@alfa-chemistry.com	United States	9170	60
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418684 +86-18949823763	sales@tnjchem.com	China	25333	58
Dideu Industries Group Limited	+8617392712697	1022@dideu.com	China	29089	58
ANHUI BYERSEN BIOTECH CO. LTD	+8617355064950	amy@byersenchemical.com	China	10000	58
DAYANG CHEM (HANGZHOU) CO.,LTD	+86-88938639 +86-17705817739	info@dycnchem.com	China	53589	58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.	+8618950047208	ellena@amitychem.com	China	43392	58

Supplier	Advantage
Winchem Industrial Co. Ltd	55
The future of Shanghai Industrial Co., Ltd.	55
Alfa Chemistry	60
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dideu Industries Group Limited	58
ANHUI BYERSEN BIOTECH CO. LTD	58
DAYANG CHEM (HANGZHOU) CO.,LTD	58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.	58

70210-21-8 (Reactive Orange 5) Related Search:

Reactive Orange 1 REACTIVE ORANGE 16 BRILLIANT ORANGE H

2-Naphthalenesulfonic acid, 7-4-chloro-6-(3-sulfophenyl)amino-1,3,5-triazin-2-ylmethylamino-4-hydroxy-3-(2-sulfophenyl)azo-, trisodium salt 7-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3- [(2-sulfophenyl)azo]- 7-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[(2-sulfophenyl)azo]- trisodium salt reactive orange 5 2-Naphthalenesulfonic acid trisodium 7-[[4-chloro-6-[(3-sulphonatophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[(2-sulphonatophenyl)azo]naphthalene-2-sulphonate 2-Naphthalenesulfonic acid, 7-[[4-chlore-6-[(3-sulfophenyl)amino]-1, 3, 5-triazin-2-yl]methylamino]-4-hydroxy-3-[(2-sulfophenyl)azo], trisodium salt Chemictive Brilliant Orange RH Concion Orange P-G Drimarene Brilliant Orange Z-GH Evercion Orange P-G Kayacion Orange P-G Reactive Orange K-GN Sumifix Brilliant Orange H-G Xiron Brilliant Orange G-HD Youhaoreactive Brilliant Orange KGN. 7-[4-Chloro-6-[3-(sodiosulfo)phenylamino]-1,3,5-triazin-2-ylmethylamino]-4-hydroxy-3-[2-(sodiosulfo)phenylazo]-2-naphthalenesulfonic acid sodium salt Brill Orange K-GN 7-[[4-Chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[2-(2-sulfophenyl)diazenyl]-2-naphthalenesulfonic acid sodium salt Kayacion Orange P-G Liquid 20 Reactive Orange 5 ISO 9001：2015 REACH 2-Naphthalenesulfonic acid, 7-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[2-(2-sulfophenyl)diazenyl]-, sodium salt (1:3) 70210-21-8 C25H14ClN7O13S44Na C25H14O13N7S4ClNa4 Organics