Name:C.I.Acid Yellow 199,C.I.14205 Molecular Structure: Single azo class C.I.Acid Yellow 199,C.I.14205,CAS 70865-20-2,450.40,C19H15N4NaO6S,Weak Acid Yellow A-4R,Acid Yellow A4R Molecular Formula:C19H15N4NaO6S Molecular Weight: 450.40 CAS Registry Number:70865-20-2 Properties and Applications: bright orange. Orange powder, soluble in water. Used for the dyeing nylon, to other fiber with color, for wool dyeing serious. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 6-7 4-5 5 4-5 2.International Similar Brand Weak Acid Yellow A-4R,Acid Yellow A4R Acid Yellow A4R Apollo Nylon Fast Yellow M-4R Best Acid Yellow A4R Daedo Acid Yellow 4R Daedo Acid Yellow A4R Dorasyn Yellow A4R 150% Dorasyn Yellow A4R 30% Liq Dycosweak Acid Brilliant Yellow A-4R Everacid Yellow A-4R Lerui Acid Yellow A-4R Nylomine Yellow A-4R Nylosan Yellow E-4RL Permalon Gold ALP Liq Permalon Yellow CGRL 150% Phoebe Yellow W-AGR 200% Ricoamide Yellow A4R 150% Rifa Acid Fast Yellow E-4R Rifa Acid Fast Yellow N-4R 150 Sellacid Orange PF Sinolon Yellow A-4R Taiacid Yellow MR-T 150%

CAS NO:70865-20-2

EC NO:274-950-1

Molecular Formula:C₁₉H₁₅N₄NaO₆S

Molecular Weight:450.4004

Synonyms:Benzenesulfonic acid, 4-((4-(2-(4-hydroxy-2-methylphenyl)diazenyl)phenyl)amino)-3-nitro-, sodium salt (1:1);4-((4-((4-Hydroxy-2-methylphenyl)azo)phenyl)amino)-3-nitrobenzenesulfonic acid, sodium salt;Benzenesulfonic acid, 4-((4-((4-hydroxy-2-methylphenyl)azo)phenyl)amino)-3-nitro-, monosodium salt;Sodium 4-((4-((4-hydroxy-2-methylphenyl)azo)phenyl)amino)-3-nitrobenzenesulphonate;sodium 4-({4-[(2E)-2-(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl}amino)-3-nitrobenzenesulfonate;sodium 4-[[4-(4-hydroxy-2-methyl-phenyl)azophenyl]amino]-3-nitro-benzenesulfonate;

Molecular Structure: