# Modification of Significant New Uses of Certain Chemical Substances
> **Rule** · Final rule. · Published 2002-03-20 · Effective 2002-05-20 · 67 FR 12879
## Document
- **Document number:** 02-6726
- **Category:** chemical-tsca
- **Federal Register citation:** 67 FR 12879
- **CFR reference:** 40 CFR 721
- **Publication date:** 2002-03-20
- **Effective date:** 2002-05-20
- **EPA docket:** OPPTS-50644A
## Abstract

Under section 5(a)(2) of the Toxic Substances Control Act (TSCA) and 40 CFR 721.185, EPA is amending three significant new use rules (SNURs) to allow certain uses without requiring a significant new use notice (SNUN). EPA is amending these rules based on review of new toxicity test data on one chemical and review of SNUNs for the other two chemicals. The amended SNURs would continue to require a SNUN for new uses that may involve significant changes in human or environmental exposure.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/03/20/02-6726/modification-of-significant-new-uses-of-certain-chemical-substances)
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