Pigments & Colorants
REACH
Acid Green 50
CAS Number
3087-16-9
EC Number
221-409-2
E Number
E142
What is Acid Green 50?
Acid Green 50 (CAS 3087-16-9), also known by its food additive designation E142, is a synthetic green colorant approved for use in food, textile, and industrial applications.
Where is Acid Green 50 used?
- Food and beverage: coloring confectionery, desserts, canned vegetables, and beverages
- Textile dyeing: uniform coloration on wool, silk, and nylon through acid dyeing processes
- Printing and packaging: inks and coatings for precise green color matching
- Leather finishing produces consistent surface color on treated hides.
Good to know: Food-grade material meets E142 purity requirements; technical-grade material is for textile, leather, and printing uses where food compliance is not required.
Commercial specifications
- Food-grade to E142 specification
Other Names (Synonyms)
Acid green|C.i. acid green 50|Sodium 4-[[4-(dimethylamino)phenyl]-(4-dimethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]-3-hydroxynaphthalene-2,7-disulfonate|Green s|E142
What are the physical properties of Acid Green 50?
Melting Point >300°C
Density 0.541[at 20℃]
Appearance solid
Color Dark brown or black
Form Powder
Water Solubility 492.554g/L at 28℃
Log P 0.595 at 25℃
How is Acid Green 50 classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H412 Harmful to aquatic life with long lasting effects
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
Which trade and regulatory codes apply to Acid Green 50?
HS Code 32041200
Storage Class 11 - Combustible Solids
WGK (Germany) 3