环保署公开HHCB风险评估所依据的24项研究：合成麝香评论期开放30天，12月16日截止
美国环境保护署（EPA）11月13日宣布，公开该署在《有毒物质控制法》（TSCA）下对化学物质HHCB所作风险评估草案时所依据的24项研究，并就这批新公开的材料开启为期30天的公众评论期。
HHCB又称galaxolide，是一种合成麝香，广泛用于香氛以及洗涤剂、清洁剂、空气清新剂等家居产品。环保署表示，正因为这种化学物质使用范围很广，其风险评估需要反映现有的全部科学证据，并让公众有机会查阅环保署在草案中使用的同一批资料。
环保署说明，在HHCB风险评估草案的公众评论期内，该署发现其健康与环境研究在线数据库（HERO）存在一处管理问题，一度使24项由行业提交的研究无法向公众开放。这24项研究此前已经被纳入草案评估。环保署已于10月14日解决该问题，研究现已在HERO数据库中公开。
为确保公众有机会查阅这批新公开的材料，环保署开启30天评论期。有意评论者可以结合HHCB风险评估草案查阅这些研究并提交意见。本次评论期只针对新公开的材料，不重新开放整个风险评估草案。
环保署表示，该署将认真考虑就新公开研究收到的意见，以完成HHCB风险评估的定稿工作。《联邦公报》通知刊登后，24项研究的清单将列入案卷号为EPA-HQ-OPPT-2018-0430的HHCB数据可得性备忘录。公众评论期将于12月16日截止。
（来源：美国环境保护署）
EPA Releases 24 HHCB Studies Behind Draft Risk Evaluation, Opens 30-Day Comment Period Through Dec. 16
The U.S. Environmental Protection Agency (EPA) announced on Nov. 13 the availability of 24 studies considered in the agency's draft risk evaluation for HHCB, also known as galaxolide, under the Toxic Substances Control Act (TSCA), and opened a 30-day public comment period on the newly available materials.
HHCB is a synthetic musk used widely in fragrances and in household products such as detergents, cleaners and air fresheners. EPA said that because the chemical is used so broadly, its review needs to reflect the full body of available science and give the public an opportunity to review the same information the agency used in its draft assessment.
During the public comment period for the draft HHCB risk evaluation, EPA identified an administrative issue in its Health and Environmental Research Online, or HERO, database that temporarily made 24 industry-submitted studies inaccessible to the public. The studies had already been considered in the draft evaluation. EPA resolved the issue on Oct. 14, 2026, and the studies are now publicly available in HERO.
To ensure the public has an opportunity to review the newly available materials, EPA is opening a 30-day comment period. Interested persons may review the studies in the context of the draft HHCB risk evaluation and submit comments. The comment period is limited to the newly available materials and does not reopen the entire draft risk evaluation.
EPA said it remains committed to transparency and to using the best available science in its TSCA risk evaluations, and that it will carefully consider any comments received on the newly available studies as it works to finalize the HHCB risk evaluation. Upon publication of the Federal Register notice, a list of the 24 studies will be included in the HHCB Data Availability Memorandum in docket EPA-HQ-OPPT-2018-0430. The public comment period will close on Dec. 16, 2026.
(Source: U.S. Environmental Protection Agency)
来源：美国环境保护署
发布：GSM·美国（发布链接）
图片来源：图：美国环境保护署总部大楼（GSM联邦固定图库）。 / Photo: U.S. Environmental Protection Agency headquarters (GSM federal asset library).
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