Acid Yellow 17

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Structural formula
Structural formula of CI Acid Yellow 17
General
Surname Acid Yellow 17
other names
  • 2,5-dichloro-4- (5-oxo-3-methyl-4- (4-sulfophenylazo) pyrazol-1-yl) -benzenesulfonate, disodium salt
  • CI 18835
  • Yellow 2G
  • E 107 ( no longer permitted as a food coloring )
Molecular formula C 16 H 10 Cl 2 N 4 O 7 S 2 Na 2
Brief description

yellow solid

External identifiers / databases
CAS number
  • 6359-98-4 (disodium salt)
  • 25739-65-5 (free acid)
EC number 228-819-0
ECHA InfoCard 100.026.199
PubChem 22842
ChemSpider 24590073
Wikidata Q424528
properties
Molar mass 551.29 g mol −1
Physical state

firmly

solubility

well soluble in water

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Acid Yellow 17 , according to the Color Index (CI), is the generic name for an azo dye from the group of acid dyes . It is a yellow, water-soluble solid. Acid Yellow 17 was used as a food coloring , but is no longer approved today.

Web links

Individual evidence

  1. a b Data sheet Yellow 2G, analytical standard, ≥98.0% (HPLC) from Sigma-Aldrich , accessed on May 8, 2017 ( PDF ).
  2. a b Food-Info: E107: Yellow 2G
  3. Entry on Xylene Fast Yellow 2G at TCI Europe, accessed on May 8, 2017.
  4. UK Food Standards Agency: Current EU approved additives and their E Numbers