CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Dark green solid with a metallic luster; [Merck Index] Dark red hygroscopic solid; [Sigma-Aldrich MSDS] |
|---|---|
| Color/Form | Dark green powder or granules with a metallic luster |
| Melting Point | 290 °C (decomposes) |
| Solubility | Solubility at 25 °C: in ethanol, 0.01 g/100 mL; in glycerol, 20.0 g/100 mL; in propylene glycol, 20.0 g/100 mL |
| LogP | log Kow = -3.22 (estimated) |
| Decomposition | When heated to decomposition it emits very toxic fumes of / nitrogen and sulfur oxides/. |
| Other Experimental Properties | pH Stability: slight fade after one week at pH 3; very slight fade after 1 week at pH 5 and 7; slight fade and appreciably bluer at pH 8 |
| Chemical Classes | Dyes -> Di- and Triaryl Dyes |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Health Hazard GHS08 |
| GHS Hazard Statements |
H341:Germ cell mutagenicity |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P308+P313:IF exposed or concerned: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 808.9 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 11 |
| Rotatable Bond Count | 9 |
| Exact Mass | 808.11709737 g/mol |
| Monoisotopic Mass | 808.11709737 g/mol |
| Topological Polar Surface Area | 223 Ų |
| Heavy Atom Count | 54 |
| Formal Charge | 0 |
| Complexity | 1540 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 3 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Fast green FCF is an organic sodium salt having 2-{(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)[4-{ethyl[(3-sulfonatophenyl)methyl]iminio}cyclohexa-2,5-dien-1-ylidene]methyl}-5-hydroxybenzene-1-sulfonate as the counterion. Used as a substitute for Light green SF yellowish in Masson's trichrome as it is less likely to fade, and is more brilliant in colour. Also used as a food colouring agent. It has a role as a histological dye, a fluorochrome and a food colouring. It contains a Fast green FCF(2-).