Holbein Artists' Soft Pastel - Permanent Red 1

Item #:21947-3910
View Product Details
Holbein Artists' Soft Pastel - Permanent Red 1 pastel and swatch

Save For Later

  • My Wish Lists
  • My BlickU List(s)
AP Non-Toxic

Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems.

Product Details

Artists' Soft Pastel
Permanent Red 1
Mfg #:


Pigment Information

This color contains the following pigments:

PR48:3-Permanent Red

Pigment Name

PR48:3-Permanent Red

Pigment Type

organic, monoazo

Chemical Name

beta-oxynaphthoic acid lake, strontium salt

Chemical Formula


Permanent Red is a common name used for the strontium salt of beta-oxynaphthoic acid (BONA) lake pigment PR:48. It is substantially bluer than other shades of PR:48. BONA pigment lakes tend to have high tinting strength, however the tinting strength of PR48:3 is only average.


Beta-oxynaphthoic acid (BONA) lake pigments are more lightfast than their beta-naphthol counterparts. Although their lightfastness makes them the pigment of choice in many applications, they may shift slightly in color or lose intensity under some conditions. Pigment PR48:3 has been reported to be the most lightfast of the BONA lake pigments.



Pigment Red PR48:3 is a lake pigment of beta-oxynaphtholic acid, a dye that resembles the common beta-Naphthol pigments. Beta-oxynaphthoic acid may have been synthesized as early as 1887. Commerical use of BONA lake pigments began in the 20th century. PR48:3 is used in printing, plastics, architectural paints, and industrial finishes.

Safety Data Sheet

UPC Code: 4938331290967