Quinoline Yellow WS

Quinoline Yellow WS[1]
Names
IUPAC name
Sodium 2-(1,3-dioxoindan-2-yl)quinolinedisulfonate
Other names
  • C.I. Acid Yellow 3
  • Food Yellow 13
  • D&C Yellow No. 10
  • Acid yellow 3
  • Quinidine Yellow KT
  • Japan Yellow 203
  • Lemon Yellow ZN 3
  • C.I. 47005
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.116.526 Edit this at Wikidata
EC Number
  • 305-897-5
E number E104 (colours)
UNII
  • InChI=1S/C18H11NO8S2.2Na/c20-17-11-3-1-2-4-12(11)18(21)15(17)13-6-5-9-7-10(28(22,23)24)8-14(16(9)19-13)29(25,26)27;;/h1-8,15H,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2 checkY
    Key: FZUOVNMHEAPVBW-UHFFFAOYSA-L checkY
  • InChI=1/C18H11NO8S2.2Na/c20-17-11-3-1-2-4-12(11)18(21)15(17)13-6-5-9-7-10(28(22,23)24)8-14(16(9)19-13)29(25,26)27;;/h1-8,15H,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2
    Key: FZUOVNMHEAPVBW-NUQVWONBAX
  • [Na+].[Na+].[O-]S(=O)(=O)c1cc(cc2ccc(nc12)C4C(=O)c3ccccc3C4=O)S([O-])(=O)=O
Properties
C18H13NO5/8/11S1/2/3Na1/2/3
Molar mass 477.38 g/mol
Appearance Greenish yellow powder
Melting point 150 °C (302 °F; 423 K) (decomposes)
Soluble[2]
Acidity (pKa) 1.8
Hazards[3]
GHS labelling:
GHS07: Exclamation mark
Warning
H302
P264, P270, P301+P312, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Quinoline Yellow WS is a mixture of organic compounds derived from the dye Quinoline Yellow SS (spirit soluble). Owing to the presence of sulfonate groups, the WS dyes are water-soluble (WS). It is a mixture of disulfonates (principally), monosulfonates and trisulfonates of 2-(2-quinolyl)indan-1,3-dione with a maximum absorption wavelength of 416 nm.[4]p. 119

  1. ^ "QUINOLINE YELLOW WS (C.I. ACID YELLOW 3)". Retrieved 30 June 2023.
  2. ^ Additives FAO [dead link]
  3. ^ "Quinoline Yellow for microscopy (Hist.), mixture of mono- and disulfonic acid sodium salt". Sigma Aldrich.
  4. ^ Joint FAO/WHO Expert Committee on Food Additives (1991). Guide to specifications for general notices: general analytical techniques, identification tests, test solutions, and other reference materials (Rev. 2 [= ed. 1991] ed.). Rome: Food and Agriculture Organization of the United Nations. ISBN 9789251029916.