dye|World dye variety

Name:C.I.Solvent Red 72,C.I.45370:1

Molecular Structure: Xanthene class

C.I.Solvent Red 72,C.I.45370:1,CAS 596-03-2,490.10,C20H10Br2O5,D&C Orange NO 5 308257,Red 23421,Spectra D&C Orange 5

Molecular Formula:C₂₀H₁₀Br₂O₅

Molecular Weight: 490.10

CAS Registry Number:596-03-2

Manufacturing Methods :Fluorescein (C.I. Acid Yellow 73, C.I. 45350) in the sodium hydroxide solution two bromination, and  made into a free acid form.

Properties and Applications:brilliant yellow light yellow. Slightly soluble in water for orange, with weak yellow fluorescence, soluble in ethanol for orange, with green yellow fluorescence, soluble in acetone peachblossom, with yellow fluorescence, soluble in Tetrahydrofurfuryl alcohol. In concentrated sulfuric acid to red light yellow, dilution after yellow brown, with orange precipitation. Dye aqueous solution to join sodium hydroxide as red edge; In the glycerol and liquid paraffin in good dispersibility. Used in medicines and cosmetics coloring.

List of Suppliers:

D&C Orange NO 5 308257 ( Warner-Jenkinson Co )

D&C Orange No 5 W038 ( Les Colorants Wackherr )

Sitnpsol Red 23421 (Simpsons (UK) Ltd)

Spectra D&C Orange 5( Spectra Colors Corp. )