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BENZOPURPURIN 4B

BENZOPURPURIN 4B structure

CAS No.: 992-59-6

Chemical Name:: BENZOPURPURIN 4B

Synonyms: Red 4B;CI 23500;azamin4b;SULTAN 4B;eriered4b;eclipsered;paperred4b;purpurin4b;CI NO 23500;cottonred4b

CBNumber:: CB4710130

Molecular Formula:: C34H29N6NaO6S2

Molecular Weight:: 704.75

MDL Number:: MFCD00012410

MOL File:: 992-59-6.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 01:30:20

Product description	Number	Pack Size	Price
BENZOPURPURIN B Aldrich^CPR	S567620	1 unit	$197
BENZOPURPURIN B AldrichCPR	S567620	250MG	$179
Benzopurpurine 4B	B0781	5g	$573
Benzopurpurin 4B (Direct Red 2, CI 23500)	265964	25g	$134
Benzopurpurin 4B (Direct Red 2, CI 23500)	265964	100g	$305
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BENZOPURPURIN 4B Properties

Melting point	>250°C
storage temp.	Amber Vial, -20°C Freezer
solubility	Soluble in water, ethanol, acetone, sodium hydroxide, sulfuric acid
Colour Index	23500
form	powder
color	Brown
PH Range	1.2(violet)-4(red)
Water Solubility	Soluble in water (20 mg/ml), acetone, ethanol (3 mg/ml), sodium hydroxide, and sulfuric acid.
λmax	500nm
Merck	14,1101
Stability	Stable. Incompatible with strong oxidizing agents.
Major Application	Liquid crystal displays, thin films, electronic devices, inks, lithographic printing plates, lithographic printing plates, printing and dyeing applications, textiles, lubricants, food storage, microorganism staining agent, treatment of apolipoprotein E-related diseases, antifungal agent
InChIKey	VRGQPCWEGKAZKK-DVDDBBOFSA-N
SMILES	S(C1=CC(/N=N/C2C=CC(C3C=CC(/N=N/C4C=C(S(O)(=O)=O)C5=CC=CC=C5C=4N)=C(C)C=3)=CC=2C)=C(N)C2=CC=CC=C12)(O)(=O)=O.[NaH]
FDA UNII	G519JHX5MJ
EPA Substance Registry System	C.I. Direct Red 2, disodium salt (992-59-6)

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Hazard statements

H315-H319-H335

Precautionary statements

P261-P280a-P304+P340-P305+P351+P338-P405-P501a

Hazard Codes

Risk Statements

45-36/37/38

Safety Statements

53-45-60-37-26

WGK Germany

RTECS

QK1765000

TSCA

TSCA listed

HS Code

29215900

Hazardous Substances Data

992-59-6(Hazardous Substances Data)

NFPA 704

	0
2		0

BENZOPURPURIN 4B price More Price(49)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	S567620	BENZOPURPURIN B Aldrich^CPR		1 unit	$197	2026-04-30	Buy
Sigma-Aldrich	S567620	BENZOPURPURIN B AldrichCPR	992-59-6	250MG	$179	2024-03-01	Buy
TCI Chemical	B0781	Benzopurpurine 4B	992-59-6	5g	$573	2026-04-30	Buy
Usbiological	265964	Benzopurpurin 4B (Direct Red 2, CI 23500)	992-59-6	25g	$134	2026-06-03	Buy
Usbiological	265964	Benzopurpurin 4B (Direct Red 2, CI 23500)	992-59-6	100g	$305	2026-06-03	Buy

Product number	Packaging	Price	Buy
S567620	1 unit	$197	Buy
S567620	250MG	$179	Buy
B0781	5g	$573	Buy
265964	25g	$134	Buy
265964	100g	$305	Buy

BENZOPURPURIN 4B Chemical Properties,Uses,Production

Chemical Properties

dark red or brown powder

Uses

For dyeing primarily cotton and viscose rayon: Colour Index vol. 2 (3rd ed., 1971) p 2101. As an analytical reagent in detection of Al, Mg, Hg, Ag, U; as a biological stain; as pH indicator, violet 1.2 to red 4.0.

Uses

Benzopurpurine 4B is a biological stain and pH indicator for pH 2.3-4.4.

Preparation

3,3′-Dimethylbenzidine double nitriding, and 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.

General Description

Brown to dark red powder.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.

Reactivity Profile

BENZOPURPURIN 4B is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Fire Hazard

Flash point data for BENZOPURPURIN 4B are not available. BENZOPURPURIN 4B is probably combustible.

Properties and Applications

red. Red powder. Soluble in water and red to red light for brown, soluble in soluble fiber element, ethanol and acetone, insoluble in other organic solvents. The strong sulfuric acid for red light blue, shallow green light blue for diluted, precipitation; In nitric acid solution for blue, yellow to brown. The dye solution to join strong hydrochloric acid for violet black, precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation; Add 10% sodium hydroxide solution in red. Mainly used for cellulose fiber dyeing and printing.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fading	Stain	Fading	Stain
ISO	1-2	4	1	2		2
AATCC	1	4	2	1		2

Purification Methods

It crystallises from H2O. It is a biological stain that is violet at pH 1.2 and red at pH 4.0 and is used for detecting Al, Mg, Hg, Au and U. [Beilstein 16 H 411, 16 II 224, 16 III 474, 16 IV 601.]

BENZOPURPURIN 4B Preparation Products And Raw materials

Raw materials

4-(6-Methyl-2-benzothiazolyl)benzeneamine 1-Naphthol-4-sulfonic acid 4-ethoxy-5-hydroxynaphthalene-2,7-disulphonic acid O-Tolidine

Preparation Products

BENZOPURPURIN 4B Suppliers

Global( 107)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	+8615531151365	mina@chuanghaibio.com	China	18126	58
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29815	58
Hebei Yanxi Chemical Co., Ltd.	+8618531123677	faithe@yan-xi.com	China	5853	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 +8617705817739	info@dycnchem.com	China	52705	58
Aladdin Scientific		tp@aladdinsci.com	United States	52923	58
Chongqing Chemdad Co., Ltd	+86-023-6139-8061 +86-86-13650506873	sales@chemdad.com	China	39927	58
J & K SCIENTIFIC LTD.	18210857532; 18210857532	jkinfo@jkchemical.com	China	96815	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40228	62
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24529	81
Energy Chemical	021-021-58432009 400-005-6266	sales8178@energy-chemical.com	China	44802	61

Supplier	Advantage
Hebei Chuanghai Biotechnology Co., Ltd	58
career henan chemical co	58
Hebei Yanxi Chemical Co., Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Aladdin Scientific	58
Chongqing Chemdad Co., Ltd	58
J & K SCIENTIFIC LTD.	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61

View Lastest Price from BENZOPURPURIN 4B manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-06-27	Sultan Red 4B 992-59-6		1KG	99%	500000kg	Hebei Chuanghai Biotechnology Co., Ltd
2019-07-12	BENZOPURPURIN 4B 992-59-6	$1.00	1KG	99%	25kg	Career Henan Chemical Co
2019-07-06	BENZOPURPURIN 4B 992-59-6	$1.00	1KG	95%-99.99%	1kg-10MT	Career Henan Chemical Co

Sultan Red 4B
992-59-6
$0.00
99%
Hebei Chuanghai Biotechnology Co., Ltd

BENZOPURPURIN 4B
992-59-6
$1.00
99%
Career Henan Chemical Co

BENZOPURPURIN 4B
992-59-6
$1.00
95%-99.99%
Career Henan Chemical Co

BENZOPURPURIN 4B Spectrum

BENZOPURPURIN 4B(992-59-6)¹HNMR BENZOPURPURIN 4B(992-59-6)¹³CNMR BENZOPURPURIN 4B(992-59-6)IR1 BENZOPURPURIN 4B(992-59-6)IR2

992-59-6(BENZOPURPURIN 4B)Related Search:

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Naphthionic acid 4-AMINO-3-METHYLBIPHENYL 4-AMINO-1-NAPHTHALENESULFONIC ACID SODIUM SALT 3,3'-Dimethylbiphenyl 1-Naphthalenesulfonic acid

3,4-Diaminobenzenesulfonic acid BENZOPURPURIN 4B 3'-METHYL-BIPHENYL-4-YLAMINE 1,2-DIAMINONAPHTHALENE BENZOPURPURIN 10B

BRILLIANT DIANIL RED Benzopurpurin4BC.I.23500 BRILLIANT PURPURIN R

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BENZOPURPURIN B, FOR MICROSCOPY BENZOPURPURINE 4B, FOR MICROSCOPY,INDICA TOR Diclosulam, Pestanal Direct Benzo Purpine 4B SULTAN 4B PURPURINE 4B VICTORIA RED tertrodirectred4b tetrodirectred4b Benzopurpurine 4B 1-Naphthalenesulfonic acid, 3,3'-[[3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl]bis(azo)]bis(4-amino-, disodium salt Direct red 2 (C.I. 23500) 1-Naphthalenesulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'- biphenyl]-4,4'-diyl)bis(azo)]bis[4-amino-, disodium salt disodium 3,3'-((3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(azo)bis(4-aminonaphthalene-1-sulphonate) 3,3'-DIMETHYLBIPHENYL-4,4'-BIS-2-AMINONAPHTHYLAZO-6-SULFONATE, DINA Benzopurpurine 4B, indicator BENZOPURPURIN 4B BENZOPURPURIN B BENZOPURPURINE 4B BRILLIANT PURPURIN BRILLIANT PURPURIN R CALCOMINE RED 4BX CI 23500 CI NO 23500 DIAMINE RED 4B DIAMINE RED B DELTAPURPURIN DIRECT RED 3 DIRECT RED 2 DIRECT PURPURINE 4B DIANIL RED 4B DIANIL RED 4C 1-naphthalenesulfonicacid,3,3’-((3,3’-dimethyl(1,1’-biphenyl)-4,4’-diyl)bis(a 1-naphthalenesulfonicacid,3,3’-((3,3’-dimethyl(1,1’-diphenyl)-4,4’-diyl)bis(a 1-naphthalenesulfonicacid,3,3’-[(3,3’-dimethyl[1,1’-biphenyl]-4,4’-diyl)bis(a 1-Naphthalenesulfonicacid,3,3’-[[3,3’-dimethyl(1,1’-biphenyl)-4,4’-diyl]bis(azo)]bis(4-amino-,disodiumsalt amanilpurpurine4b atuldirectred4b azamin4b azocardred4b bencidalpurple4b benzanilpurpurine4b benzopurpurine4bkx benzopurpurine4bx brasilaminared4b c.i.directred2 c.i.directred2,disodiumsalt cervenprima2 chromeleatherred4b cottonred4b diacottonbenzopurpurine4b diaminepurpurine4b diaphtaminepurpurine diaphtaminepurpurine4b diazaminepurpurine4b diazinered4b diazolpurpurine4b diphenylred4b diphenylred4bs