2-Naphthalenol, 1-[(2,4-dinitrophenyl)azo] - (Pigment Orange 5)

CAS Registry Number 3468-63-1

What is it?

  • 2-Naphthalenol, 1-[(2,4-dinitrophenyl)azo]-, also known as Pigment Orange 5, is an industrial chemical.

How is it used?

  • Pigment Orange 5 is an organic substance that is used in Canada and elsewhere as an orange pigment in paints, printing inks and textiles.
  • Based on the most recent data available, Pigment Orange 5 is imported into Canada.

Why did the Government of Canada assess It?

  • This substance 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 is it released to the environment?

  • Pigment Orange 5 may be released to the environment during industrial processes using the pigment to manufacture other coloured products and during the recycling of printing inks.

What is the Government of Canada Doing?

  • The Government of Canada has conducted an evaluation of Pigment Orange 5 based on science, called a screening assessment.
  • The Government of Canada has determined that Pigment Orange 5 is not harmful to the environment, because it was found not to accumulate and not to cause harm to organisms. Therefore, no further action will be taken on Pigment Orange 5.
  • The final screening assessment report was published on March 7, 2009.

What should Canadians do?

  • Because Pigment Orange 5 is not a concern for the environment or human health, Canadians do not need to take any specific actions with respect to how they use this substance or products that contain that substance.
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