Nicker Poster Colour Paint - Iris Blue, 40 ml

Pigment Information

This color contains the following pigments:

PB1-Victoria Blue

PV3-Methyl Violet 2B

Pigment Name

PB1-Victoria Blue

Pigment Type

organic

Properties

Victoria Blue is a brilliant, transparent reddish blue dye, which can be laked as a pigment. Because its tinting power is not so overwhelming as that of Phthalo Blue pigments, it still has a place on the designer's palette, even though Phthalo Blue (Red Shade) might be considered superior in many respects.

Permanence

Victoria Blue is considered fugitive. It should be used primarily in works that are prepared for reproduction, not for permanent display, when there is a need for a transparent blue pigment with less tinting power than Phthalo Blue.

Toxicity

Victoria Blue is not considered toxic.

History

Victoria Blue, one of the oldest synthetic blue dyes, is used in papers, inks, and textile dyes. Although much more reddish in tone, it was an early synthetic replacement for indigo dyes from natural sources at a time when blue was still in great demand in textiles.

Pigment Name

PV3-Methyl Violet 2B

Pigment Type

organic, triarylcarbonium

Chemical Name

tetramethyl violet

Chemical Formula

C24H28N3Cl

Properties

Methyl Violet 2B is a staining, transparent violet dye. It turns yellow when exposed to strong acids.

Permanence

Methyl Violet 2B will fade with exposure to ultraviolet light.

Toxicity

Methyl Violet 2B is harmful to living cells and organisms, so it is diluted in medical and biological applications as a topical fungicide or disinfectant. Methyl Violet 2B may cause irritation to the skin, eyes, respiratory tract, or gastrointestinal trac

History

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.