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Acid Green 50

CAS Number
3087-16-9
EC Number
221-409-2
Chemical Formula
C27H26N2O7S2.Na
Molecular Weight
576.6 g/mol

Description

Acid Green 50 (CAS 3087-16-9 ), also known by its food additive designation E142 , is a synthetic green colorant approved for use across food, textile, and industrial applications. It delivers a bright, stable green hue that resists fading under standard processing conditions, making it a reliable choice for manufacturers requiring consistent color output. In food and beverage production, E142 is used to color confectionery, desserts, canned vegetables, and beverages where a vivid green appearance is required for the final product. Textile dyeing operations use Acid Green 50 to achieve uniform coloration on wool, silk, and nylon fabrics through specialized acid dyeing processes used in large scale manufacturing. In printing and packaging, it is incorporated into inks and coatings where precise color matching to green shades is critical for brand consistency and visual appeal. Leather finishing operations also use it to produce consistent surface color on treated hides, ensuring that the final leather goods meet strict aesthetic requirements for the market. Acid Green 50 is typically supplied as a powder or granule. Food-grade material is available to E142 specification, meeting purity requirements set by relevant food additive regulations. Technical-grade material is supplied for textile, leather, and printing applications where food compliance is not required, providing a cost-effective solution for industrial users. Contact us for supply of Acid Green 50 Request Quote

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

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point>300°C
Density0.541[at 20℃]
Appearancesolid
ColorDark brown or black
FormPowder
Water Solubility492.554g/L at 28℃
Log P0.595 at 25℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code32041200
Storage Class11 - Combustible Solids
WGK (Germany)3