Fast Green FCF

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(Redirected from E143)

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Fast Green FCF
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Names
IUPAC name
ethyl-[4-[[4-[ethyl-[(3-sulfophenyl)methyl]amino]phenyl]-(4-hydroxy-2-sulfophenyl)methylidene]-1-cyclohexa-2,5-dienylidene]-[(3-sulfophenyl)methyl]azanium
Other names
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  • Food green 3
  • FD&C Green No. 3
  • Green 1724
  • Solid Green FCF
  • C.I. 42053
Identifiers
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3D model (JSmol)
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  • InChI=1S/C37H36N2O10S3.2Na/c1-3-38(24-26-7-5-9-33(21-26)50(41,42)43)30-15-11-28(12-16-30)37(35-20-19-32(40)23-36(35)52(47,48)49)29-13-17-31(18-14-29)39(4-2)25-27-8-6-10-34(22-27)51(44,45)46;;/h5-23H,3-4,24-25H2,1-2H3,(H3,41,42,43,44,45,46,47,48,49);;/q;2*+1/p-2 checkY
    Key: RZSYLLSAWYUBPE-UHFFFAOYSA-L checkY
  • InChI=1/C37H36N2O10S3.2Na/c1-3-38(24-26-7-5-9-33(21-26)50(41,42)43)30-15-11-28(12-16-30)37(35-20-19-32(40)23-36(35)52(47,48)49)29-13-17-31(18-14-29)39(4-2)25-27-8-6-10-34(22-27)51(44,45)46;;/h5-23H,3-4,24-25H2,1-2H3,(H3,41,42,43,44,45,46,47,48,49);;/q;2*+1/p-2
    Key: RZSYLLSAWYUBPE-NUQVWONBAL
  • CCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3)C5=C(C=C(C=C5)O)S(=O)(=O)[O-].[Na+].[Na+]
Properties
C37H34N2Na2O10S3
Molar mass 808.84 g·mol−1
Hazards[1]
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NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Fast Green FCF, also called Food green 3, FD&C Green No. 3, Green 1724, Solid Green FCF, and C.I. 42053, is a turquoise triarylmethane food dye. Its E number is E143.

Fast Green FCF is recommended as a replacement of Light Green SF yellowish in Masson's trichrome, as its color is more brilliant and less likely to fade. It is used as a quantitative stain for histones at alkaline pH after acid extraction of DNA. It is also used as a protein stain in electrophoresis. Its absorption maximum is at 625 nm.

Fast Green FCF is poorly absorbed by the intestines.[2] Its use as a food dye is prohibited in the European Union and some other countries. In the United States, Fast Green FCF is the least used of the seven main FDA approved dyes.

Toxicology

A reevaluation of Fast Green FCF published by the World Health Organization in 2017 concluded that it has low toxicity and is not carcinogenic or genotoxic, and that there were no health concerns with consumption of Fast Green FCF at the previously established allowable daily intake (which itself is much higher than estimates of actual dietary exposure to Fast Green FCF).[3]

Notes

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  1. ^ Page Module:Citation/CS1/styles.css has no content."Summary of Classification and Labelling". Retrieved 4 December 2021.
  2. ^ Page Module:Citation/CS1/styles.css has no content."Fast Green FCF". IPCS INchem. Archived from the original on 2014-07-01. Retrieved 2007-10-18.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Organization, World Health (2017). Evaluation of certain food additives: eighty-fourth report of the Joint FAO/WHO Expert Committee on Food Additives (PDF). World Health Organization. pp. 36–41. ISBN 9789241210164. Retrieved 2 September 2021.

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