Pyrazolone

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Description

A bright orange azo colorant. Pyrazolone is extensively used in rubbers, but has had limited use in polyolefins and is not used in plasticized plastics because of its tendency to migrate and bleed. It is colorfast to water and detergents. Pyrazolone has been used in some air-drying paints and printing inks.

Synonyms and Related Terms

Pigment Orange 13; CI 21110; disazopyrazolone; pyrazolone orange

FTIR

PO013 - pyrazolone or diarylide orange.jpg


Other Properties

Recommended for products processed below 200 C.

Lightfast = 4-6 (Blue scale)

CAS 3520-72-7

Hazards and Safety

May migrate, bleed, nad bloom.

Additional Information

º W. Herbst, K. Hunger, Industrial Organic Pigments, Wiley-VCH Verlag GmbH & Co., Weinheim, p. 266.

Authority

  • B. Berrie, S.Q. Lomax, 'Azo Pigments: Their History, Synthesis, Properties and Use in Artists' Materials', Studies in the History of Art , National Gallery of Art, Washington DC, No. 57, 1997

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