CAS Registry Number 54079-53-7
What is it?
- [[4-[[2-(4-cyclohexylphenoxy) ethyl]ethylamino]-2-methylphenyl]methylene]-, propanedinitrile, also known as CHPD, is an industrial chemical.
How is it used?
- CHPD is an organic substance that is used in Canada and elsewhere as a yellow colorant dye in plastics.
- CHPD is not manufactured in Canada, but is imported into Canada.
Why is the Government of Canada assessing it?
- Prior to assessment, CHPD was identified as a potential concern to the environment based on information regarding possible persistence, accumulation in organisms and potential to cause harm to aquatic organisms.
- CHPD was not considered to be a high priority for assessment of potential risks to human health; however, potential health effects were also evaluated in this screening assessment.
- New evidence has led to the re-evaluation of the risks, conclusions and final decision that were previously published regarding CHPD.
How is it released to the environment?
- CHPD may be released to water, air, and soils through industrial processes and potential use of consumer products.
How are Canadians exposed to it?
- The general population of Canada may be exposed to CHPD from environmental media and food; however, this exposure is expected to be low.
What are the results of the assessment?
- The Government of Canada has conducted a science-based evaluation of CHPD called a screening assessment.
- Screening assessments address potential for harm to the general population (not including workplace exposures) and the environment.
- The Government of Canada has re-evaluated the risks associated with CHPD due to new information received for this substance.
- Results of the draft screening assessment now indicate that although CHPD may persist in the environment, it is not expected to accumulate in organisms.
- Furthermore, the quantity of CHPD that may be released to the environment is below the level expected to cause harm to organisms.
- The Government of Canada is therefore proposing that CHPD is not entering the environment in a quantity or under conditions that constitute a danger to the environment.
- The Government of Canada is also proposing that CHPD is not harmful to the health of the general population at current levels of exposure.
What Is the Government of Canada Doing?
- If the proposed conclusion is confirmed in the final screening assessment, the Government of Canada proposes that no further action be taken on CHPD.
- The draft screening assessment report was published on July 3, 2010 and will be followed by a 60-day public comment period (from July 3, 2010 to September 1, 2010).
What Canadians Can Do
- The health risks associated with a chemical depend on the hazard (its potential to cause health effects) and the dose (the amount of the chemical to which you are exposed). CHPD is not 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 any safety warnings and directions.
- Canadians who handle CHPD in the workplace should consult with their occupational health and safety representative about safe handling practices, applicable laws and requirements under the Workplace Hazardous Materials Information System.