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ACID YELLOW 25 (C.I. 18835)

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ACID YELLOW 25 (C.I. 18835) Basic information

Product Name:
ACID YELLOW 25 (C.I. 18835)
Synonyms:
  • sodium,4-[3-methyl-4-[[4-methyl-3-(phenylsulfamoyl)phenyl]diazenyl]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate
  • sodium 4-(3-methyl-4-(4-methyl-3-(phenylaminosulphonyl)phenylazo)-5-hydroxypyrazol-1-yl)benzenesulphonate
  • AcidYellowER
  • C.I.AcidYellow25
  • 1H-Pyrazole,5-oxo-4,5-dihydro-3-methyl-4-[[3-[(phenylamino)sulfonyl]-4-methylphenyl]azo]-1-(4-sulfophenyl)-,sodiumsalt
  • Benzenesulfonic acid, 4-4,5-dihydro-3-methyl-4-4-methyl-3-(phenylamino)sulfonylphenylazo-5-oxo-1H-pyrazol-1-yl-, monosodium salt
  • Acid Fast Yellow ER
  • Covanyl Yellow RN
CAS:
6359-85-9
MF:
C23H20N5NaO6S2
MW:
549.55457
EINECS:
228-810-1
Product Categories:
  • Organics
  • A
  • Stains and Dyes
  • Stains&Dyes, A to
Mol File:
6359-85-9.mol
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ACID YELLOW 25 (C.I. 18835) Chemical Properties

Density 
1.282[at 20℃]
Colour Index 
18835
Water Solubility 
73.7g/L at 20℃
LogP
-0.8 at 23℃
CAS DataBase Reference
6359-85-9
EPA Substance Registry System
C.I. Acid Yellow 25 (6359-85-9)
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Safety Information

WGK Germany 
3
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ACID YELLOW 25 (C.I. 18835) Usage And Synthesis

Uses

Acid Yellow 25 is a stain/dye. Dyes and metabolites.

Preparation

5-Amino-2-methyl-N-phenylbenzenesulfonamide?diazo, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling.

Flammability and Explosibility

Not classified

Properties and Applications

yellow. Yellow powder. Soluble in water yellow, encounter cold becomes muddy. Slightly soluble in ethanol and acetone. Meet strong sulfuric acid is yellow, the generation after diluted fluorescent yellow precipitation. Its water solution meet sodium hydroxide solution without change. Mainly used for wool and polyamide fiber of printing and dyeing, also can be used for leather and electrochemical aluminum shading, occasionally used for paper coating.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5-6 4 2 3 1 3 3
AATCC 6-7 4 4 3-4 1 1 4

ACID YELLOW 25 (C.I. 18835) Preparation Products And Raw materials

Raw materials

ACID YELLOW 25 (C.I. 18835)Supplier

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