BB 9 – methylene blue

Discovered in 1876, it is now extensively used as a dye for textiles and for paper and leather.

Manufacturer/ product code:  Sigma-Aldrich / M6900
Chemical Description:  triaminotriphenylmethane dye, C16H18ClN3S.
Color: blue
Color Index: Basic Blue 9, C.I. 52015
More info: 


XRF spectroscopy

XRF Spectroscopy Pigments-Checker Database

XRF cannot identify this pigment.

NIR Reflectance Spectroscopy (930 – 1690 nm)

NIR-Reflectance Spectroscopy (930-1690 nm) Pigments-Checker Database