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C.I. Direct Orange 31

C.I. Direct Orange 31 Structure
C.I. Direct Orange 31 structure
CAS No.
6420-03-7
Chemical Name:
C.I. Direct Orange 31
Synonyms
C.I.23655;Direct Orange 31;C.I. Direct Orange 31;Diaphtamine Fast Orange PRS;C.I.Direct Orange 31:C.I.23655;5-[[4'-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid disodium salt
CBNumber:
CB22078788
Molecular Formula:
C31H27N6NaO7S
Molecular Weight:
650.64
MDL Number:
MOL File:
6420-03-7.mol
Last updated:2026-05-27 23:59:38
Product description Number Pack Size Price
CALCOCHROME BROWN EB 95.00% DYE0002787 5MG $502.89
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SAFETY

Risk and Safety Statements

Symbol(GHS)  Health Hazard (GHS08)
GHS08
Signal word  Danger
Hazard statements  H350

C.I. Direct Orange 31 price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
American Custom Chemicals Corporation DYE0002787 CALCOCHROME BROWN EB 95.00% 6420-03-7 5MG $502.89 2021-12-16 Buy
Product number Packaging Price Buy
DYE0002787 5MG $502.89 Buy

C.I. Direct Orange 31 Chemical Properties,Uses,Production

Preparation

3,3′-Dimethylbenzidinedouble nitriding, respectively with2-Hydroxybenzoic acid and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.

Properties and Applications

red light orange. Used for cellulose fiber dyeing, good levelness, white the gender is good.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 3-4 3 2-3 3

C.I. Direct Orange 31 Preparation Products And Raw materials

Raw materials

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Salicylic acid O-Tolidine

Preparation Products

C.I. Direct Orange 31 Suppliers

Global( 1)Suppliers
Supplier Tel Email Country ProdList Advantage
Shaanxi Dideu Medichem Co. Ltd 		+86-29-87569262 +86-15003564040 1056@dideu.com China 3970 58
Supplier Advantage
Shaanxi Dideu Medichem Co. Ltd 		58

C.I. Direct Orange 31 Spectrum

C.I. Direct Orange 31(6420-03-7)IR1C.I. Direct Orange 31(6420-03-7)IR2

6420-03-7(C.I. Direct Orange 31)Related Search:

C.I. Direct Orange 28 sodium 2-[4-[[2,4-dihydroxy-3-(phenylazo)phenyl]azo]phenyl]-6-methylbenzothiazole-7-sulphonate Direct Orange 33 disodium (3Z)-5-methyl-3-[[2-methyl-4-[3-methyl-4-[[3-methyl-5-oxo-1-(4-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]phenyl]phenyl]hydrazinylidene]-6-oxo-cyclohexa-1,4-diene-1-carboxylate DIRECT ORANGE 29
7-[[4-[(2,4-Diamino-5-nitrophenyl)azo]benzoyl]amino]-4-hydroxy-3-[(4-sodiosulfophenyl)azo]naphthalene-2-sulfonic acid sodium salt C.I. Direct Orange 27 Direct Orange 46 DIRECT ORANGE 26

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C.I. Direct Orange 31 5-[[4'-[[4,5-Dihydro-3-methyl-5-oxo-1-(4-sulfophenyl)-1H-pyrazol-4-yl]azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid disodium salt C.I.23655 Direct Orange 31 Diaphtamine Fast Orange PRS C.I.Direct Orange 31:C.I.23655 6420-03-7