HomeDrawingPastels and Oil PastelsRembrandt Soft Pastels and SetsRembrandt Soft Pastel - Red Violet 545.5, Full Stick

Rembrandt Soft Pastel - Red Violet 545.5, Full Stick

Item #:20026-5011
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Rembrandt Soft Pastel - Red Violet 545.5, Full Stick
Rembrandt Soft Pastel - Red Violet 545.5, Full Stick

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AP Non-Toxic.

Product Details

Description:
Full Stick
Color:
Red Violet 545.5
Mfg #:
31995455
No.
545.5

Pigment Information

This color contains the following pigments:

PV1-Rhodamine B

PR81:1-Rhodamine 6G


Pigment Name

PV1-Rhodamine B

Pigment Type

organic, fluorone dye

Chemical Name

Rhodamine B

Chemical Formula

C28H31N2O3Cl

Properties

Rhodamine B is a staining violet dye that has flourescent properties. It is extremely soluble in both water and alcohol. In art materials, it is laked as a pigment.

Permanence

Rhodamine B, like all fluorescent dyes, is not considered to be lightfast. It is recommended for permanent works of art only if they can be adequately protected from exposure to ultraviolet light.

Toxicity

The fluorescent dye Rhodamine B is toxic, and its use is banned in food, textiles, and cosmetics. It is harmful if swallowed, inhaled, or absorbed through the skin. It has been shown to be carcinogenic in rats when injected subcutaneously, producing local

History

Rhodamine B, discovered in 1887, is used as a staining fluorescent dye in the biological sciences, for microscopy. It is also used as a laser dye. Because of its low cost, high tinting strength, solubility in water and alcohol, and relative stability for a fluorescent, it has sometimes been used as a food colorant, even though its use in food and cosmetics has been banned in most countries for many years. There have been several highly publicized recalls of food and cosmetic products contaminated with Rhodamine B.


Pigment Name

PR81:1-Rhodamine 6G

Pigment Type

organic, fluorone dye

Chemical Formula

C28H31N2O3Cl

Properties

Rhodamine 6G is a staining reddish-yellow pigment that has fluorescent properties. It is extremely soluble in both water and alcohol. Fluorescent molecules absorb light at one wavelength and emit light at a longer wavelength.

Permanence

Rhodamine 6G, like all fluorescent dyes, is not considered permanent, however it is reported  to have high stability for a fluorone dye.

Toxicity

Rhodamine 6G is toxic, however it can be biologically inactive and hence non-toxic in a lake pigment form.

History

Rhodamine dyes are often used for microscopy in the biological sciences.


Safety Data Sheet

UPC Code: 8712079143466

ASIN #: B000BI7RNO