FAST GREEN FCF- ▸ Food colorant: Green color for food and beverage applications.
- ▸ Cosmetic colorant: Dye for cosmetics and personal-care products.
- ▸ Drug coloring: Colorant for pharmaceutical products.
- ▸ Biological stain: Counterstain in histology and microscopy.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Fast Green FCF (CAS 2353-45-9), designated FD&C Green No. 3 and CI 42053, is a water-soluble triarylmethane acid dye. It is used to color foods, drugs, and cosmetics and as a biological stain and counterstain in histology.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 219-091-5
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is FD&C Green No. 3 made of?
FD&C Green No. 3 is Fast Green FCF (CAS 2353-45-9, CI 42053), a synthetic water-soluble triarylmethane acid dye. Its formula is C37H34N2Na2O10S3.
What products have Green 3?
It is used as a green colorant in food and beverage, cosmetics and personal-care products, and pharmaceutical products, and as a biological counterstain in histology and microscopy.
Is Green 3 water soluble?
Yes. Fast Green FCF (FD&C Green No. 3) is a water-soluble acid dye, which is why it is used directly in aqueous food, drug, and cosmetic systems. For insoluble applications a lake form would be required instead.
What is the CAS number and HS code for FD&C Green No. 3?
The CAS number is 2353-45-9 (CI 42053). It is classified under HS 3204.12, acid dyes and preparations based thereon.
What is the cost of bulk FD&C Green No. 3?
Bulk pricing depends on grade, dye strength, volume, packaging, and delivery location. RawSource supplies industrial quantities — request a quote with your volume and CoA/SDS requirements for delivered pricing.
What is the REACH and TSCA regulatory status of Fast Green FCF (FD&C Green 3, CI 42053)?
Fast Green FCF (FD&C Green 3, CI 42053) (CAS 2353-45-9) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 219-091-5).