PR9—Naphthol Red

Pigment Type

monoazo

Chemical Name

n/a

Chemical Formula

C₂₄H₁₇Cl₂N₃O₃

Properties

This Naphthol Red is a bright deep red with bluish undertones. It has an average drying time.

Permanence

This Naphthol Red has fair to good lightfastness, not because of its masstone, but because it fades in tints. Not suitable for exterior use.

Toxicity

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

History

Unknown.

Alternate Names

Naphthal, Naphthol Bordeaux, Naphthol Carbamide, Naphthol Carmine, Permanent Carmine, Permanent Red.