Solvent Red 26

Solvent Red 26
Names
Other names
Oil Red EGN, Benzidine Yellow 10G, Sanyo Pigment Yellow 8105
Identifiers
CAS Number
  • 4477-79-6
3D model (JSmol)
  • Interactive image
ChEMBL
  • ChEMBL1966947
ChemSpider
  • 16097342
ECHA InfoCard 100.022.508 Edit this at Wikidata
EC Number
  • 224-757-3
PubChem CID
  • 62541
UNII
  • KR6F64FLX3 checkY
CompTox Dashboard (EPA)
  • DTXSID5050395 Edit this at Wikidata
InChI
  • InChI=1S/C25H22N4O/c1-16-8-4-7-11-21(16)26-27-22-14-18(3)23(15-17(22)2)28-29-25-20-10-6-5-9-19(20)12-13-24(25)30/h4-15,30H,1-3H3
    Key: NRBKWAQSLYBVSG-UHFFFAOYSA-N
  • Oc2ccc1ccccc1c2N=Nc3cc(C)c(N=Nc4ccccc4C)cc3C
Properties
Chemical formula
 C25H22N4O
Molar mass 394.478 g·mol−1
Appearance Red solid
Solubility in water
 Low
Hazards
GHS labelling:
Pictograms
 GHS07: Exclamation markGHS08: Health hazard
Warning
Hazard statements
 H315, H317, H319, H335, H341, H351
Precautionary statements
 P201, P202, P261, P264, P271, P272, P280, P281, P302+P352, P304+P340, P305+P351+P338, P308+P313, P312, P321, P332+P313, P333+P313, P337+P313, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound

Solvent Red 26, also known as Oil Red EGN or C.I. 26120, is a purplish red synthetic azo dye. It is soluble in oils and insoluble in water.

Its main use is as a standard fuel dye in the US mandated by the US IRS to distinguish low-taxed or tax exempt heating oil from automotive diesel fuel, and by the EPA to mark fuels with higher sulfur content; it is however increasingly replaced with Solvent Red 164, a similar dye with longer alkyl chains, which is better soluble in hydrocarbons.[1] The concentration required by IRS is a spectral equivalent of 3.9 pounds per 1000 barrels, or 11.13 mg/L, of Solvent Red 26 in solid form; the concentrations required by EPA are roughly 5 times lower.

See also

References

  1. ^ "L2_3_9_rf". www.chevron.com. Archived from the original on May 10, 2005.