PR63:1-Lithol Bordeaux
PV3-Methyl Violet 2B
BR12-Basic Red
PR63:1-Lithol Bordeaux
organic, monoazo
PR63:1 is a transparent deep bluish red pigment that is produced from a lake of calcium salt.
PR63:1 has only fair lightfastness.
BONA lake pigments are dyes that are laked with a salt such as calcium, barium, strontium, or manganese. They have been in production as dyes since the early 20th century.
PV3-Methyl Violet 2B
organic, triarylcarbonium
tetramethyl violet
C24H28N3Cl
Methyl Violet 2B is a staining, transparent violet dye. It turns yellow when exposed to strong acids.
Methyl Violet 2B will fade with exposure to ultraviolet light.
Methyl Violet dyes are used in medical, biological, and pharmaceutical applications. Common Methyl Violets include Methyl Violet 2B, Methyl Violet 6B, and Methyl Violet 10B. They are often used as biological stains for cytology. The common name Gentian Violet is sometimes applied to this class of dyes. In very dilute form, Gentian Violet is often used as an antifungal agent, including in applications where there is contact with skin and other tissue. Paper impregnanted with Methyl Violet 2B is used to test pH because it turns yellow at pH 0.
BR12-Basic Red
astra phloxine lake
UPC Code: 847340030225