Acid Green
Green S, Food Green S
- CAS
- 3087-16-9
- EC
- 221-409-2
- Food Code
- E142
- Sectors
- Textiles, Leather & Paper, Printing & Packaging
Acid Green (CAS 3087-16-9) is a group of anionic dyes that appear as a dark brown or black powder and deliver bright green shades when applied, used principally for dyeing wool, silk, nylon, leather and paper and for ink formulations and biological stains. These dyes exhibit high solubility and excellent affinity toward protein and polyamide fibers, offering durable, vivid results.
Typical Properties
| Molecular formula | C27H26N2O7S2.Na |
|---|---|
| Molecular weight | 576.62 g/mol |
| Appearance | solid |
| Form | Powder |
| Color | Dark brown or black |
| Melting point | >300°C |
| Density | 0.541[at 20°C] |
| Water solubility | 492.554g/L at 28°C |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 32041200 |
| Grades available | Food Grade, Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Acid Green
Applications
Used extensively in dyeing wool, silk, and nylon fabrics, as well as in ink formulations and biological stains. Its color brilliance and good leveling characteristics make it suitable for precision dyeing and blended shade development.
Safety & Risks
Powdered dye may irritate skin and respiratory tract. Avoid direct contact and airborne dust through localized extraction. Wastewater containing dye residues must be treated in accordance with environmental regulations to prevent coloration of effluents.
Packaging
Supplied in 25 kg fiber drums or multi-wall paper bags lined with polyethylene. Store in a cool, dry, well-ventilated area away from sunlight and moisture.