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C.I. Direct Orange 31

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
MOL File:
6420-03-7.mol
Modify Date:
2023/5/4 15:13:44
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SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS08
Signal word  Danger
Hazard statements  H350

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

Preparation

3,3′-Dimethylbenzidine?double nitriding, respectively with?2-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 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