Sudan II

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Sudan II
Names
IUPAC name
1-(2,4-Dimethylphenylazo)-2-naphthol
Other names
see text
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.019.537 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C18H16N2O/c1-12-7-9-16(13(2)11-12)19-20-18-15-6-4-3-5-14(15)8-10-17(18)21/h3-11,21H,1-2H3/b20-19+ checkY
    Key: JBTHDAVBDKKSRW-FMQUCBEESA-N checkY
  • InChI=1/C18H16N2O/c1-12-7-9-16(13(2)11-12)19-20-18-15-6-4-3-5-14(15)8-10-17(18)21/h3-11,21H,1-2H3/b20-19+
    Key: JBTHDAVBDKKSRW-FMQUCBEEBZ
  • Cc3ccc(/N=N/c1c2ccccc2ccc1O)c(C)c3
Properties
C18H16N2O
Molar mass 276.339 g·mol−1
Melting point 156 to 158 °C (313 to 316 °F; 429 to 431 K)
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 ?)

Sudan II (Solvent Orange 7, C.I. 12140, C18H16N2O)

lipoproteins on paraffin sections. It has the appearance of red powder with melting point 156–158 °C and maximum absorption at 493(420) nm.[1]

Uses

In industry, it is used to color nonpolar substances like

acrylic emulsions.[2]

It was used as food dye under the designation FD&C Red 32 in the US until the FDA banned its use in food in 1956 due to toxicity.[3]

References

  1. ^ a b "Substance Name: C.I. Solvent Orange 7". ChemIDplus, Toxnet Database. Retrieved 15 October 2016.
  2. ^ "HSDB: C.I. Solvent Orange 7. CASRN: 3118-97-6". Toxnet. Retrieved 15 October 2016.[dead link]
  3. ISBN 9780824707606
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