3214-47-9

Basic information

• Product Name: DIRECT YELLOW 50
• Synonyms: 1,5-Naphthalenedisulfonicacid,3,3’-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis-,tetrasodiumsalt;abcoldirectyellowrlsw;AmanilSupraYellowLRL;C.I.DirectYellow50(29025);DiazolLightYellowRS;DiphenylYellowRLSW;directyellow50(c.i.29025);DurazolYellowFRR
• CAS NO: 3214-47-9
• Molecular Formula: C35H24N6Na4O13S4
• Molecular Weight: 956.82
• EINECS: 221-728-7
• Product Categories: Dyes and Pigments;Organics;D;Stains and Dyes;Stains&Dyes, A to
• Mol File: 3214-47-9.mol
• Article Data: 0

Chemical Properties

• Appearance: Yellow powder
• Density: 1.987[at 20℃]
• Water Solubility: 66.67g/L at 20℃
• CAS DataBase Reference: DIRECT YELLOW 50(CAS DataBase Reference)
• NIST Chemistry Reference: DIRECT YELLOW 50(3214-47-9)
• EPA Substance Registry System: DIRECT YELLOW 50(3214-47-9)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 3214-47-9(Hazardous Substances Data)

Usage

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and a coupling m-Toluidine, then the light gasification.

Flammability and Explosibility

Nonflammable

Properties and Applications

red light yellow. Soluble in water for golden brown, solubility of 60 g/L (60 ℃), 80 g/L (97 ℃), slightly soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for quality in red, dilute for green light blue after blue precipitation; In nitric acid solution for purple. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution with gold orange precipitation. Cellulose fiber of dyeing, in 80 ℃ maximum when affinity, for the neutral, weak acid dye bath dyeing. Hard to not sensitive. In dyeing copper and iron ion colored light basic unchanged. Mainly used for cotton, viscose, which silk dyeing and printing, and can directly printing, also can to discharge printing color. Can and disperse dyestuffs high temperature polyester/cotton with bath dyeing blended fabric. May also used for the dyeing nylon, leather, paper and electrochemical aluminum color. Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water Fading Stain Fading Stain ISO 3-4 3 6 2-3 2 AATCC 5 3 5 2-3 1-3

Standard

Acid Resistance

Fading

Stain

ISO

3-4

AATCC

5

InChI:InChI=1/C35H28N6O13S4.4Na/c1-19-13-21(9-11-29(19)40-38-23-15-27-25(33(17-23)57(49,50)51)5-3-7-31(27)55(43,44)45)36-35(42)37-22-10-12-30(20(2)14-22)41-39-24-16-28-26(34(18-24)58(52,53)54)6-4-8-32(28)56(46,47)48;;;;/h3-18H,1-2H3,(H2,36,37,42)(H,43,44,45)(H,46,47,48)(H,49,50,51)(H,52,53,54);;;;/q;4*+1/p-4