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Amaranth

CAS Number
915-67-3
EC Number
213-022-2
Chemical Formula
C20H14N2O10S3.3Na
Molecular Weight
604.5 g/mol

Description

Amaranth (CAS 915-67-3 ), also known as E123 and Red No. 2, is a synthetic azo dye producing a deep red-to-maroon hue across a range of industrial and food applications. It functions as a colorant in formulations where consistent, stable red coloration is required at controlled concentrations. In the textile and leather industries, it is used to dye natural and synthetic fibers. The dye delivers uniform color uptake in batch and continuous dyeing processes. Ink formulators incorporate it into printing inks for packaging applications where vivid red shades and dye solubility are process requirements. In food and beverage manufacturing, where permitted by regional regulation, it colors products such as caviar, certain alcoholic drinks, and fish roe. Paper manufacturers use it to achieve consistent red tones. The product is utilized in decorative and specialty paper grades to ensure visual uniformity. Amaranth is supplied as a fine dark red to brown powder for various industrial and commercial manufacturing needs. It is available in food-grade specification meeting E123 purity standards, as well as technical grade for textile and industrial use. Dye content is a key specification buyers should confirm during procurement. Commercial grades typically vary in active dye concentration depending on the intended application. This versatility makes it a staple for manufacturers requiring reliable red pigmentation in diverse chemical environments. Contact us for supply of Amaranth Request Quote

Other Names (Synonyms)

Red number two | Red number 2 | Red num 2 | Red No 2 | Red dye number two | Red dye number 2 | Red dye #two | Red dye #2 | E123

Key Technical Features

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

Physical Properties

Melting Point>300°C
Density~1.50 g/cm³ (approx)
Flash Point214°
Appearancesolid
ColorDark reddish-brown to dark brown
FormCrystalline Powder
Water Solubility50 g/L (20 ºC)
pH9.65 (28°C, - OECD Test Guideline 122 - alkaline)
Log P-5.13

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
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 Code32129000
Storage Class11 - Combustible Solids
WGK (Germany)3