9,10-Anthracenedione, 1-[(5,7-dichloro-1,9-dihydro-2-methyl-9-oxopyrazolo[5,1-b]quinazolin-3-yl)azo]- (Pigment Red 251)

CAS Registry Number 74336-60-0

What is it?

  • 9,10-Anthracenedione, 1-[(5,7-dichloro-1,9-dihydro-2-methyl-9-oxopyrazolo[5,1-b]quinazolin-3-yl)azo]-, also known as Pigment Red 251, is an industrial chemical.

How is it used?

  • Pigment Red 251 may be used as pigment/dye/printing ink industry sectors. Based on the most recent data available, there are no reports that Pigment Red 251 is currently in commerce in Canada (above the reporting threshold of 100 kg).

Why did the Government of Canada assess it?

  • Pigment Red 251 was identified as a potential concern to the environment based on available information regarding possible persistence, accumulation and potential to cause harm to the environment.

How it is released to the environment?

  • The Government of Canada has reviewed information that indicates Pigment Red 251 is not currently in commerce in Canada in significant quantities.
  • As a result, it is unlikely that Pigment Red 251 is entering the environment as a result of commercial manufacture or use in this country.

What is the Government of Canada doing?

  • The Government of Canada has conducted an evaluation of Pigment Red 251 based on science, called a screening assessment.
  • The Government of Canada is therefore proposing that Pigment Red 251 does not cause harm to the environment.
  • The Government of Canada will consider implementing a Significant New Activity or SNAc provision for Pigment Red 251. This would require that any proposed new uses of Pigment Red 251 would be subject to further assessment before this new activity would be allowed.
  • The final screening assessment report was published on March 7, 2009.

What should Canadians do?

  • Because Canadians' exposure to Pigment Red 251 is very low, Canadians do not need to take any specific actions to reduce their exposure.
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