Description

Fast Green FCF is a synthetic, water-soluble triarylmethane dye widely recognized for its brilliant blue-green hue and excellent stability. This certified colorant is valued for its consistent performance and compliance with stringent international food and pharmaceutical standards. It is primarily utilized by manufacturers in the food, cosmetic, pharmaceutical, and biological staining industries seeking a reliable and safe coloring agent.

Application

• Food & Beverage Coloring: Used as a certified food dye (E143) in candies, beverages, desserts, and pet foods to provide a stable blue-green color.
• Pharmaceutical & Nutraceutical Coatings: Employed in the coloring of tablet coatings, capsules, and syrups for product identification and aesthetic appeal.
• Cosmetics & Personal Care: Incorporated into soaps, shampoos, and other cosmetic products where a vibrant, non-toxic color is required.
• Microscopy & Biological Staining: Serves as a vital histological stain, particularly as a counterstain in Masson's trichrome and other protocols to visualize collagen and connective tissues.
• Industrial Applications: Used in inks, textiles, and paper products where specific color properties are needed.

Basic Information

Product Name	Fast Green FCF
CAS No.	2353-45-9
Molecular Formula	C37H34N2O10S3Na2
Molecular Weight	808.86 g/mol
Synonyms	Fast Green FCF; Food Green 3; FD&C Green No. 3; C.I. 42053; E143; Acid Green 50; Lissamine Green B; Wool Green S; Brilliant Acid Green BS; Green 1724; Green No. 3
EINECS	219-091-5

Quality Control

Our Fast Green FCF is produced and tested to meet high-purity standards suitable for food, pharmaceutical, and technical applications. Quality is assured through rigorous analytical controls including HPLC for assay and impurity profiling. We can supply material compliant with relevant specifications such as FCC (Food Chemicals Codex) and can provide Certificates of Analysis (COA) upon request to guarantee batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark green to blue-green powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85.0%
Loss on Drying	≤ 15.0 %
Water Insoluble Matter	≤ 0.2 %
Subsidiary Colors	Passes test
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.