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Red 2G

Red 2G
Skeletal formula of Red 2G as a sodium salt
Space-filling model of the Red 2G molecule as a sodium salt
Names
Other names
  • Acid Red 1
  • Food Red 10
  • Amidonaphthol red G
  • azogeranine
  • azophloxine
  • azofloxin
  • C.I. 18050
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.020.999 Edit this at Wikidata
E number E128 (colours)
UNII
  • InChI=1S/C18H15N3O8S2/c1-10(22)19-14-9-13(30(24,25)26)7-11-8-15(31(27,28)29)17(18(23)16(11)14)21-20-12-5-3-2-4-6-12/h2-9,23H,1H3,(H,19,22)(H,24,25,26)(H,27,28,29)/p-2/b21-20+ checkY
    Key: RSNSKUBBVCGSND-QZQOTICOSA-L checkY
  • InChI=1/C18H15N3O8S2/c1-10(22)19-14-9-13(30(24,25)26)7-11-8-15(31(27,28)29)17(18(23)16(11)14)21-20-12-5-3-2-4-6-12/h2-9,23H,1H3,(H,19,22)(H,24,25,26)(H,27,28,29)/p-2/b21-20+
    Key: RSNSKUBBVCGSND-OLKPTRFBBB
  • CC(=O)Nc2cc(cc3cc(c(/N=N/c1ccccc1)c(O)c23)S([O-])(=O)=O)S([O-])(=O)=O
Properties
C18H13N3O8S2
Molar mass 463.44 g·mol−1
18 g/100 mL (20 °C)
Solubility 1 g/ 100 mL glycerol
Negligible in ethanol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Red 2G is a synthetic red azo dye. It is soluble in water and slightly soluble in glycerol. It usually comes as a disodium salt of 8-acetamido-1-hydroxy-2-phenylazonaphthalene-3,6 disulfonate.


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Crvena 2G BS Acid Red 1 German Rojo 2G Spanish Punainen 2G Finnish Rouge 2G French אדום 2G HE Vörös 2G Hungarian Raudonasis 2G LT Rood 2G Dutch Czerwień 2G Polish

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