Dye|Dye intermediates|Fluorescent Brightener|pigment dye

Name:C.I.Pigment Red 50:1,C.I.15500:1

Molecular Structure: Single azo

C.I.Pigment Red 50:1,C.I.15500:1,CAS 6372-81-2,292.29,C17H12N2O3,Lake Red D

Molecular Formula:C₁₇H₁₂N₂O₃

Molecular Weight: 292.29

CAS Registry Number:6372-81-2

Manufacturing Methods :2-Aminobenzoic acid diazotization, and Naphthalen-2-ol coupling, and then into barium salt

Properties and Applications:red light orange, shallow blue light pink. Slightly soluble in water (orange) and ethanol. Melting point 176 ℃ (from the glacial acetic acid crystal). In concentrated sulfuric acid in scarlet, dilution have orange precipitation. Pigment solution to join hydrochloric acid have orange precipitation; Add sodium hydroxide into darker orange.

List of Suppliers:

Lake Red D (Sinochem Liaoning Import & Export Corporation)