What's Happening?
The U.S. Environmental Protection Agency (EPA) has released a draft risk evaluation for 1,2-dichloropropane under the Toxic Substances Control Act (TSCA). This chemical, a volatile, colorless liquid with a sweet, chloroform-like odor, is used in industrial
and commercial applications, including as a laboratory chemical and a reactant. The EPA has recognized 1,2-dichloropropane as likely carcinogenic to humans and has evaluated both cancer and non-cancer health effects in its draft. Although its use in U.S. manufactured cleaning and furnishing care products ceased in 2022, the EPA included these uses in its evaluation due to the potential for imported products to contain the chemical. The draft identifies significant contributions to unreasonable risk for workers and occupational non-users from inhalation and dermal exposure under 11 conditions of use. Additionally, three consumer uses of 1,2-dichloropropane as a cleaner, polish, or wax were preliminarily found to contribute to unreasonable risk through inhalation and dermal exposure. The EPA's draft does not currently identify unreasonable risk to the general population or the environment.
Why It's Important?
This draft risk evaluation is important because it highlights the EPA's ongoing efforts to assess and manage the risks posed by chemicals in commerce, particularly those with carcinogenic potential. The focus on 1,2-dichloropropane, a chemical recognized as likely carcinogenic, underscores the agency's commitment to protecting public health. The evaluation's findings, particularly regarding risks to workers, occupational non-users, and consumers of certain imported products, could lead to significant changes in how this chemical is handled and regulated. By addressing potential exposures from imported goods, the EPA is acknowledging the global nature of chemical supply chains and their impact on U.S. consumers. The emphasis on susceptible subpopulations, such as children and pregnant women, reflects a comprehensive approach to risk assessment, aiming to safeguard the most vulnerable populations from potential harm. This process is crucial for informing future regulatory decisions that could affect various industries and consumer product availability.
What's Next?
The EPA will now accept public comments on the draft risk evaluation and associated technical support documents for 60 days. This public comment period is a critical phase where workers, employers, health researchers, consumers, and the public, as well as affected facilities, are encouraged to provide input. The EPA will carefully consider all feedback before finalizing the evaluation. If the EPA continues to find unreasonable risk after this review, the agency will propose risk management actions under TSCA section 6(a) to address those exposures. These actions would be implemented on a clear and accountable timeline and could include measures to address conditions of use that drive exposures, including those from imported products. The findings and conclusions of the draft evaluation may change based on the feedback received and external peer review of the underlying science.
Beyond the Headlines
The EPA's review of 1,2-dichloropropane extends beyond immediate health risks, touching upon broader implications for chemical regulation and international trade. The inclusion of phased-out uses in U.S. manufactured products due to potential imports highlights the complex challenge of regulating chemicals in a globalized economy. This approach signals a potential shift towards more comprehensive oversight that considers the entire lifecycle of a chemical, regardless of its country of origin. Furthermore, the EPA's call for data on specific imported products containing 1,2-dichloropropane indicates a proactive stance in identifying and mitigating risks from international supply chains. This could set a precedent for future chemical evaluations, prompting greater scrutiny of imported goods and potentially influencing international manufacturing standards. The process also underscores the ethical responsibility of regulatory bodies to protect citizens from harmful substances, even when those substances are no longer produced domestically.
