PR187—Naphthol Red 187

Pigment Type

organic, monoazo

Chemical Name

n/a

Chemical Formula

CONHC₆H₄-(p)CONH₂

Properties

Pigment Red PR187 is a transparent red with a bluish tone, part of the Naphthol AS family of red pigments.

Permanence

Pigment Red PR187 has excellent lightfastness and weather fastness in most applications.

Toxicity

Naphthol Reds are not considered toxic. They may cause eye, skin, or respiratory irritation. Contact with dry pigment should be avoided.

History

Pigment Red PR187 is one of the most widely used synthetic red pigments. It has been used to color latex, plastics, paints, resins, and printing inks. Because it is somewhat transparent, it has sometimes been used in metallic automotive finishes.

Alternate Names

Permanent Pink, Naphthol Red 187.