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Acid Brown 4

CAS No.
5858-51-5
Chemical Name:
Acid Brown 4
Synonyms
Brown R;C.I.14805;Acid Brown 4;C.I.Acid Brown 4;Acid brown 4 (C.I. 14805);C.I.Acid Brown 4:C.I.14805;Acid Brown 4 ISO 9001:2015 REACH;sodium 6-[(4-aminophenyl)azo]-5-hydroxynaphthalene-1-sulphonate;6-[(4-Aminophenyl)azo]-5-hydroxy-1-naphthalenesulfonic acid sodium salt;sodium,(6E)-6-[(4-aminophenyl)hydrazinylidene]-5-oxonaphthalene-1-sulfonate
CBNumber:
CB3875458
Molecular Formula:
C16H13N3O4S.Na
Molecular Weight:
366.35
MDL Number:
MOL File:
5858-51-5.mol
MSDS File:
SDS
Last updated:2026-05-28 01:16:32

Acid Brown 4 Properties

Density 1.447[at 20℃]
Water Solubility 18.67g/L at 20℃
LogP -1.616 at 20℃

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P330-P501
REACH Registrations Active

Acid Brown 4 price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
AK Scientific T085 Acid Brown 4, tech. 5858-51-5 1g $28 2026-06-04 Buy
AK Scientific T085 Acid Brown 4, tech. 5858-51-5 5g $84 2026-06-04 Buy
aablocks AA01DQ00 1-Naphthalenesulfonic acid, 6-[2-(4-aminophenyl)diazenyl]-5-hydroxy-, sodium salt (1:1) 5858-51-5 1g $32 2026-05-29 Buy
aablocks AA01DQ00 1-Naphthalenesulfonic acid, 6-[2-(4-aminophenyl)diazenyl]-5-hydroxy-, sodium salt (1:1) 5858-51-5 5g $94 2026-05-29 Buy
TRC A189858 AcidBrown4 5858-51-5 100mg $75 2021-12-16 Buy
Product number Packaging Price Buy
T085 1g $28 Buy
T085 5g $84 Buy
AA01DQ00 1g $32 Buy
AA01DQ00 5g $94 Buy
A189858 100mg $75 Buy

Acid Brown 4 Chemical Properties,Uses,Production

Uses

Acid Brown 4 is a brown dye whose staining effects can be removed by the electrocoagulation (EC) process.

Preparation

N-(4-aminophenyl)acetamide diazo, and 5-Hydroxynaphthalene-1-sulfonic acid coupling, and then remove acetyl hydrolysis.

Flammability and Explosibility

Non flammable

Properties and Applications

red light brown. Soluble in water for red light brown, soluble in ethanol for yellow light brown. The strong sulfuric acid for wine red, dark blue, diluted to the red orange. Strong hydrochloric acid solution to join a brown orange precipitation; Add thick sodium hydroxide solution for palm orange.

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

References

[1] Parsa J B, et al. Removal of Acid Brown 14 in aqueous media by electrocoagulation: Optimization parameters and minimizing of energy consumption[J]. Desalination, 2011, 278(1-3): 295-302.

Acid Brown 4 Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 38)Suppliers
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Hubei Guangao Biotechnology Co., Ltd 027-02702759223056 18162699093 1208480011@qq.com China 9508 58
sodium,(6E)-6-[(4-aminophenyl)hydrazinylidene]-5-oxonaphthalene-1-sulfonate Acid Brown 4 sodium 6-[(4-aminophenyl)azo]-5-hydroxynaphthalene-1-sulphonate 1-Naphthalenesulfonic acid, 6-(4-aminophenyl)azo-5-hydroxy-, monosodium salt Acid brown 4 (C.I. 14805) Brown R 6-[(4-Aminophenyl)azo]-5-hydroxy-1-naphthalenesulfonic acid sodium salt C.I.14805 C.I.Acid Brown 4 6-[2-(4-Aminophenyl)diazenyl]-5-hydroxy-1-naphthalenesulfonic acid sodium salt Acid Brown 4 ISO 9001:2015 REACH C.I.Acid Brown 4:C.I.14805 1-Naphthalenesulfonic acid, 6-[2-(4-aminophenyl)diazenyl]-5-hydroxy-, sodium salt (1:1) 5858-51-5 C16H12N3NaO4S C16H12N3O4SNa