ACETYL YELLOW G

PRODUCT IDENTIFICATION

CAS NO. 2706-28-7

ACETYL YELLOW G

EINECS NO.  
FORMULA NaO3SC6H4N=NC6H3(NH2)SO3Na
MOL WT. 401.32
H.S. CODE  
TOXICITY  
SMILES

 

SYNONYMS C.I. Acid Yellow 9; C.I. Food Yellow 2; Fast Yellow;
2-Amino-5-[(4-sulfophenyl)azo]-benzenesulfonic acid, disodium salt; 6-Amino-3,4'-azodi(benzenesulfonic acid), disodium salt; Acid yellow; Acid Yellow AT; Acid Yellow G; Acid Yellow Geigy; 4-Aminoazobenzene-3,4'-disulfonate Disodium salt; Fast Yellow AB; Fast Yellow Y; Food Yellow 2; Yellow T; Wool Yellow G; C.I. 13015; 4-Amino-1,1'-azobenzene-3,4'-disulfonic acid disodium salt;

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Yellow Powder
MELTING POINT  
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER Soluble (18 - 19%)
SOLUBILITY

 

AUTOIGNITION  
pH  
VAPOR DENSITY  
NFPA RATINGS  

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY Stable under ordinary conditions.

APPLICATIONS

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. Acetyl Yellow G has been used in coloring foods and drugs and as intermediates for making photosensive dyes and drugs. But it is not used commonly. It is used  as counter stains in histology and cytology and as components of Mallory's acid fuchsin. Acid Fuchsin (acid magenta) is a various mixture of sulfonated fuchsins. There are four of these compounds which have three sulfonic groups each. It is used in Andrade's indicator and in various complex stains to demonstrate collagen fibres red and in smooth muscle in contrast to collagen. It is used as a pH indicator.
SALES SPECIFICATION

APPEARANCE

Yellow Powder
DYE CONTENT

95.0% min

MOISTURE

5.0% max

INSOLUBLES IN WATER

1.0% max

TRANSPORTATION
PACKING 25kgs in Fiber drum
HAZARD CLASS Not regulated
UN NO.

 

OTHER INFORMATION

Hazard Symbols: XI Risk Phrases: 36/37/38, Safety Phrases: 26-36