Ethanol, 2,2'-[[3-chloro-4-[(2,6-dichloro-4-nitrophenyl)azo]phenyl]imino]bis- (Disperse Brown 1)
CAS Registry Number 23355-64-8
What is it?
- Ethanol, 2,2'-[[3-chloro-4-[(2,6-dichloro-4-nitrophenyl)azo]phenyl]imino]bis, also known as Disperse Brown 1, is an industrial chemical.
How is it used?
- Disperse Brown 1 has previously been used as a colorant dye, mainly in textiles and fabric.
- Small quantities of Disperse Brown 1 are believed to be in commerce; however, there is no recent information on manufacturing, importation or use of this substance.
Why did the Government of Canada assess it?
- Prior to assessment, Disperse Brown 1 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 is it released to the environment?
- Disperse Brown 1 may be released to the environment during industrial processes and consumer use.
- Upon its release, most of the substance is expected to end up in solid waste disposal sites. A significant proportion is also estimated to be released to sewer water.
- Disperse Brown 1 may remain in the environment for a long time when released. However, data suggests that the substance does not significantly accumulate in or directly harm organisms.
What are the results of the assessment?
- The Government of Canada has conducted a science-based evaluation of Disperse Brown 1 called a screening assessment.
- Results of the final assessment indicate that although Disperse Brown 1 may remain in the environment for a long time, the substance is not expected to accumulate in organisms.
- Furthermore, the amount of Disperse Brown 1 that may be released to the environment is below the level expected to cause harm to organisms.
- The Government of Canada has therefore determined that Disperse Brown 1 is not entering the environment in a quantity or under conditions that constitute a danger to the environment.
What is the Government of Canada doing?
- Based on the conclusion of the final screening assessment, no further action is required for this substance.
- The final screening assessment was published on August 22, 2009.
What could Canadians do?
- Since Disperse Brown 1 is not presently a concern for the environment or human health, Canadians do not currently need to take any specific actions with respect to this chemical.
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