PR 3 – toluidine red
Created in 1904, became popular in the 70′ because it was cheap but not stable. It was used in all industrial and artistic applications
Manufacturer/ product code: Kremer / 23950
Chemical Description: beta naphthol toluidine
Color: red
Color Index: PR 3
Date: from 1904
Reflectance Spectroscopy (350-950 nm)
Reflectance Spectroscopy (200-1250 nm)
Reflectance Spectroscopy (950-1700 nm)
XRF Spectroscopy
Raman Spectroscopy (785 nm)
Raman Spectroscopy (830 nm)
Raman Spectroscopy (1064 nm)
FTIR Spectroscopy (non-invasive )
