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

C.I.42053
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