AMARANTH

PRODUCT IDENTIFICATION

 

CAS NO. 915-67-3

AMARANTH

EINECS NO. 213-022-2
FORMULA C20H11N2Na3O10S3
MOL WT. 604.46

H.S. CODE

3204.12

TOXICITY

 

SYNONYMS Acid Red 27; C.I. 16185;
Azorubin S; 1-(4-Sulfo-1-naphthylazo)-2-hydroxy-3,6-naphthalenedisulfonic acid trisodium salt; Trisodium 3-hydroxy-4-(4-sulfonato-1-naphthylazo)-2,7-naphthalenedisulfonate; trisodium salt of 1-(4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid; FD & C Red No.2; 2-Hydroxy-1,1'-azonaphthalene-3,6,4'-trisulfonic acid trisodium salt; 3-Hydroxy-4-((4-sulfo-1-naphthyl)azo)-2,7-naphthalenedisulfonic acid trisodium salt;

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Dark red to purple powder
MELTING POINT Decomposes at 120 C without melting
BOILING POINT

 

SPECIFIC GRAVITY

1.5

SOLUBILITY IN WATER

Soluble (50 g/l)

PH  
VAPOR DENSITY

 

NFPA RATINGS  

REFRACTIVE INDEX

 

FLASH POINT

44 C

STABILITY Stable under ordinary conditions.

APPLICATIONS

Amaranth is a synthetic acid dye containing both NN and CC chromophore groups (pyrazolone dye). It was made from amaranth plants. It is a red-brown dye; soluble in water; decomposes at 120 C without melting; has been used in coloring food, cosmetics and meications (FD & C Red No.2).  But it is banned by the FDA due to carcinogen suspect. It is an anionic dye applied to natural and synthetic fibers, leather, paper and phenol- formaldehyde resins. The chemical designation is 3-Hydroxy-4-((4- sulfo-1-naphthyl)azo)-2,7- naphthalene disulfonic acid, trisodium salt. Acid dyes are water-soluble dyes employed mostly in the form of sodium salts of the sulfonic or carboxylic acids. They are anionic which attach strongly to cationic groups in the fibre directly. They can be applicable to all kind of natural fibres like wool, cotton and silk as well as to synthetics like polyesters, acrylic and rayon. But they are not substantive to cellulosic fibres. They are also used in paints, inks, plastics and leather.

SALES SPECIFICATION

APPEARANCE

Dark red to purple powder

DYE CONTENT

85.0% min

VOLATILE MATTER

11.0% max

WATER INSOLUBLES

0.2% max

SUBSIDIARY DYES

1.5% max

INTERMEDIATE IMPURITY

0.5% max

ARSENIC

3ppm max

LEAD

10ppm max

MERCURY

1ppm max

TRANSPORTATION
PACKING

 

HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 36/37/39
PRICE INFORMATION