Food Red 1
Molecular Structure: Single azo class
Molecular Formula:C18H14N2Na2O7S2
Molecular Weight: 480.42
CAS Registry Number:4548-53-2
Manufacturing Methods : 2,4-Dimethyl-5-aminobenzenesulfonic acid diazo, coupled with the 4-Hydroxynaphthalene-1-sulfonic acid.
Properties and Applications: bright yellow light red to red. Soluble in water for yellow light red, slightly soluble in alcohol. The strong sulfuric acid is a deep in the red, red after diluted precipitation; In nitric acid solution for orange, then become yellow. The dye solution to join strong hydrochloric acid red slightly deepen; Add thick sodium hydroxide solution for orange.
List of Suppliers:
Daiwa Ponceau SX( Kaseihin Kogyo Kyokai )
FD & C Red No 4 307001 ( Warner-Jenkinson Co )
FD&C Red No. 4( Yorkshire Group pic )
FD&C Red No.4 37004 ( Anstead International )
FD&C Red No.4 90118 ( Anstead International )
FD&C Red No.4 W084 ( Les Colorants Wackherr )
Neelicol Ponceau SX( Neelikon Food Dyes and Chemicals Ltd )
Ponceau SX ( Pointing Ltd )
Ponceau SX ( Warner-Jenkinson Co )
Ponceau SX( Liberty Exports Ltd )
Ponceau SX 307003 ( Warner-Jenkinson Co )
Ponceau SX 35005 ( Anstead International )
Ponceau SX 37004 ( Anstead International )
Ponceau SX 90118( Anstead International )
PuriColor Red FREl( Ciba Specialty Chemicals Inc )