Fast Green FCF C.I. 42053


Fast Green FCF, also called Food green 3, FD&C Green No. 3, Green 1724, Solid Green FCF, and C.I. 42053, is a sea green 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.

  • Biological Dye
  • Protein Stain
  • Quantitative Stain

Dye Content: >85%
Molecular Formula: C37H34N2Na2O10S3
Molecular Weight: 808.86 g/mol
Insoluble Matter: <0.20%
Subsidiary Dyes: <6% (Mass)
Lead (Pb): <10mg/Kg
Arsenic (As):
Heavy Metals (as Pb): <40mg/Kg
Mercury (Hg): <1mg/Kg

Hazard Phrases: Suspected of causing genetic defects.

Prec Phrases: Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Wear protective gloves/protective clothing/eye protection/face protection. IF exposed or concerned: Get medical advice/attention. Store locked up. Dispose of contents/container.

Cas No: 2353-45-9
Einecs No: 219-091-5

HS CODE: 32129000


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This means that the buyer will be liable for import VAT at their prevailing national rate and for orders over 150€ (including carriage) import duties will become chargeable at your prevailing national rate.

The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.


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