keyword : Product Category :
  • Product name: Solvent red 5
  • Product number: 1001.21
  • Views : 32

Molecular Formula:C16H12N4O2
Molecular Weight: 292.29
CAS Registry Number:3025-77-2
Manufacturing Methods :4-Nitrobenzenamine diazotization, and Naphthalen-2-amine coupling.
Properties and Applications:dark blue light red to dark red light purple. From ethanol to crystallize in the product is golden needle crystal, melting point 185.5 ℃ soluble in ethanol, acetone and toluene. In concentrated sulfuric acid to red light blue, dilution after magenta to red solution, there are red brown precipitation; In concentrated sodium hydroxide solution insoluble.