Indigo made of Dyer's Knotweed

 
Sample ID:
PK36004
Origin:
Vegetable (Japanese Indigo)
Chemical Information:
Natural blue dye obtained from Japanese Indigo (Dyer's Knotweed)
Sample Type:
Reference material
Description:
Powder sample
History of use:
Since antiquity
Sample Source:
Kremer Pigments
Alternative names:
C.I. Natural Blue 1, NB1, Indian Blue, Indigotin, Indigo Blue
Material Class:
Natural organic dyes and pigments
Acquisition Conditions:
Attenuated Total Reflectance (ATR) mode
Resolution: 4 cm-1
Scans: 128
Range: 4000-380 cm-1