Corn, steep liquor - information sheet
CAS Registry Number 66071-94-1
On this page
- About this substance
- Human and ecological exposures
- Key health and ecological effects (hazard)
- Risk assessment outcomes
- Related information
- The Government of Canada conducted a science-based evaluation, called a screening assessment, to address the potential for harm to Canadians and to the environment from corn, steep liquor.
- Under the Canadian Environmental Protection Act, 1999 (CEPA 1999), the risk posed by a substance is determined by considering both its hazardous properties (its potential to cause adverse human health or ecological effects) and the amount of exposure there is to people and the environment. A substance may have hazardous properties; however, the risk to human health or to the environment may be low depending upon the level of exposure.
- The ecological hazard and exposure potentials of this substance were classified using the Ecological Risk Classification of Organic Substances (ERC) Approach.
- As a result of the draft screening assessment, the Government is proposing that corn, steep liquor is not harmful to human health or to the environment at levels of exposure considered in the assessment.
About this substance
- The screening assessment summarized here focuses on the substance corn, steep liquor. It was assessed under the Chemicals Management Plan (CMP).
- This substance does not occur naturally in the environment. It is a by-product of the corn wet milling process (a refinement process that transforms corn kernels into higher value products including starches, sweeteners, oils and alcohols).
- According to information gathered by the Government, in Canada, corn, steep liquor is used in anti-freeze and de-icing products to prevent corrosion and build up. It is also present as a formulant in registered pest control products, as an animal feed ingredient, and as an attractant in carp bait.
Human and ecological exposures
- Canadians may be exposed to corn, steep liquor through the commercial use of anti-freeze and de-icing products on Canadian roads, and from the use of carp bait products while fishing.
- According to information considered under the ERC Approach, corn, steep liquor was identified as having a low ecological exposure potential.
Key health and ecological effects (hazard)
- To identify health effects information, international reports of data were reviewed, including assessments by the United States Environmental Protection Agency, the Organisation for Economic Co-operation and Development, and the Joint Food and Agriculture Organization/World Health Organization (FAO/WHO) Expert Committee on Food Additives.
- There was limited health effects data for corn, steep liquor; therefore, data from its major component, lactic acid, was used for assessing potential health effects.
- Based upon the data available, no effects on human health have been identified for corn, steep liquor.
- According to information considered under the ERC Approach, corn, steep liquor was identified as having a low ecological hazard potential.
Risk assessment outcomes
- Based upon the consideration of international assessments, the risk to human health from corn, steep liquor is considered to be low.
- Based upon the outcome of the ERC Approach, corn, steep liquor is considered unlikely to cause ecological harm.
- The Government of Canada published the Draft Screening Assessment for Corn, Steep Liquor on December 7, 2019. The public are invited to comment on this assessment during the 60-day public comment period ending on February 5, 2020.
Proposed screening assessment conclusions
- As a result of the draft screening assessment, the Government is proposing that corn, steep liquor is not harmful to human health at current levels of exposure, and that it is not entering the environment at levels that are harmful to the environment.
- Corn, steep liquor may be found in products available to consumers. Canadians should follow any safety warnings and directions related to the product and dispose of products responsibly.
- Canadians who may be exposed to corn, steep liquor in the workplace can consult with their employer and an occupational health and safety (OHS) representative about safe handling practices, applicable laws, and requirements under OHS legislation and the Workplace Hazardous Materials Information System.
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