Basic information Safety Supplier Related
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DIRECT YELLOW 50

Basic information Safety Supplier Related

DIRECT YELLOW 50 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)
  • tetrasodium 3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bisnaphthalene-1,5-disulphonate
  • Concorde Direct Yellow AGFL
  • Diazine Fast Yellow 2GL
  • Direct Fast Brilliant Yellow RS
CAS:
3214-47-9
MF:
C35H24N6Na4O13S4
MW:
956.82
EINECS:
221-728-7
Product Categories:
  • D
  • Stains and Dyes
  • Dyes and Pigments
  • Organics
  • Stains&Dyes, A to
Mol File:
3214-47-9.mol
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DIRECT YELLOW 50 Chemical Properties

Density 
1.987[at 20℃]
solubility 
DMSO (Sparingly, Sonicated), Water (Slightly)
form 
Solid
color 
Dark Brown to Very Dark Brown
Water Solubility 
66.67g/L at 20℃
Stability:
Hygroscopic
LogP
-1.894 at 20℃
EPA Substance Registry System
C.I. Direct Yellow 50, tetrasodium salt (3214-47-9)
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Safety Information

WGK Germany 
3

MSDS

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DIRECT YELLOW 50 Usage And Synthesis

Uses

3,3'-[Carbonylbis[imino(2-methyl-4,1-phenylene)-2,1-diazenediyl]]bis-1,5-naphthalenedisulfonic Acid Sodium Salt (Technical Grade) is a useful research chemical. It is used in water-based ink composition with color-changing by evaporation.

Preparation

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

Flammability and Explosibility

Non flammable

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

DIRECT YELLOW 50 Preparation Products And Raw materials

Raw materials

DIRECT YELLOW 50Supplier

Energy Chemical
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021-021-58432009 400-005-6266
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sales8178@energy-chemical.com
Winchem Industrial Co. Ltd
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0574-83851061
Email
info@win-chemical.com
Shandong Xiya Chemical Co., Ltd
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4009903999 13355009207
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3007715519@qq.com
Tianjin heowns Biochemical Technology Co., Ltd.
Tel
400 638 7771
Email
sales@heowns.com
Shanghai JONLN Reagent Co., Ltd.
Tel
400-0066400 13621662912
Email
422131432@qq.com