Fast Green FCF E143
synthetic dye — Primarily synthetic.
Disodium 2-[(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)(4-{ethyl[(3-sulfonatophenyl)methyl]azaniumylidene}cyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate
CAS: 2353-45-9
Factual Regulatory Reference
This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and is subject to change. Always refer to your local regulatory authority for the most current information.
What Is Fast Green FCF?
Fast Green FCF (E143) is a synthetic triphenylmethane dye producing a sea-green to bluish-green color, used primarily in the United States where it is approved as FD&C Green No. 3 under 21 CFR 74.203. It is used in canned vegetables, drinks, confectionery, cereals, and certain baked goods. Fast Green FCF is not authorized for food use in the EU, Japan, or most other countries outside North America, reflecting the more restrictive approach those jurisdictions take toward synthetic food dyes. EFSA has not approved this colorant for use in the EU. The FDA considers Fast Green FCF safe at approved use levels and has not imposed restrictions on its use beyond standard certification requirements for synthetic food colors.
? Did You Know?
In the EU, Fast Green FCF has a "quantum satis" authorization — Latin for "as much as needed." This means there's no specific maximum limit; manufacturers use only what's technologically necessary.
Detailed Regulatory Assessment
European Union (EFSA)
Permitted in specific categories
United States (FDA)
Regulated as a direct food additive under FDA CFR titles.
Japan (MHLW)
Compliant with Japanese food sanitation law.
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Everyday Perspective
For a 60kg adult, this limit is roughly equivalent to consuming:
Natural Occurrence
This additive is not known to occur naturally in significant quantities.
Manufacturing
Industrially produced.