BAPP – information sheet

Benzenamine , 4,4' -[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis-

CAS Registry Number 13080-86-9

What is it?

  • The substance, benzenamine, 4,4' -[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis-, also known as BAPP, is an industrial chemical.

How is it used?

  • BAPP is used mainly as an additive in bonding primers used for the aerospace industry.
  • BAPP is not manufactured in Canada but is imported into Canada.

Why did the Government of Canada assess it?

  • Prior to the assessment, BAPP was identified as a potential concern to the environment based on information regarding possible persistence, accumulation in organisms and potential to cause harm to organisms.

How are Canadians exposed to it?

  • The general population of Canada is not expected to be exposed to BAPP through the environment or through the use of products available to consumers.

How is it released into the environment?

  • The majority of BAPP is chemically transformed during use in industrial processes and the main source of BAPP is expected to occur from incineration of the wastewater sludge.
  • Some of the product may also be released due to container handling and spraying operations.

What are the results of the assessment?

  • The Government of Canada has conducted a science-based evaluation of BAPP, called a screening assessment.
  • Screening assessments address potential for harm to the general population of Canada and the environment.
  • Results of the final screening assessment indicate that BAPP has the potential to remain in the environment for a long time and accumulate in organisms; however, the quantity of BAPP that has the potential to be released to the environment is below the level expected to cause harm to organisms.
  • The Government of Canada has therefore concluded that BAPP is not entering the environment at levels that constitute a danger to the environment.
  • The government has also concluded that BAPP is not harmful to human health at current levels of exposure.

What is the Government of Canada doing?

  • The Government of Canada published the Final Screening Assessment for BAPP on October 28, 2017.
  • Although BAPP is not concluded to be harmful to the environment or human health at current levels of exposure, this substance is associated with ecological effects of concern. Therefore, it may be of concern if use patterns of the substance were to change, or concentrations in the environment were to increase.
  • Follow-up activities to track changes in exposure and/or commercial use patterns for BAPP have been considered and application of the Significant New Activity (SNAc) provisions under the Canadian Environmental Protection Act, 1999 to this substance have been proposed.
  • Stakeholders will have the opportunity to provide feedback on the notice of intent to amend the Domestic Substances List to apply the SNAc provisions to BAPP during a 60-day public comment period, ending on December 27, 2017.

What can Canadians do?

  • The health risks associated with a chemical depend on the hazard (its potential to cause health effects) and the amount of substance to which a person is exposed. BAPP is not presently a concern for the environment or human health at current levels of exposure.
  • As a general precaution, Canadians are reminded when using any product, to carefully follow safety warnings and directions and to dispose of the products appropriately.
  • Canadians who may be exposed to BAPP in the workplace should consult with their employer and occupational health and safety (OHS) representatives about safe handling practices, applicable laws and requirements under OHS legislation and the Workplace Hazardous Materials Information System (WHMIS).
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