# National Organic Program (NOP); Amendments to the National List of Allowed and Prohibited Substances (Crops and Livestock)
> **Agricultural Marketing Service** · Final rule. · Published 2007-12-10 · Effective 2007-12-11 · 72 FR 69569
## Document
- **Document number:** E7-23880
- **Category:** organic
- **Sub-agency:** Agricultural Marketing Service
- **Federal Register citation:** 72 FR 69569
- **CFR reference:** 7 CFR 205
- **Publication date:** 2007-12-10
- **Effective date:** 2007-12-11
- **USDA docket:** Docket Number AMS-TM-07-0112
## Abstract

This final rule amends the U.S. Department of Agriculture's (USDA) National List of Allowed and Prohibited Substances (National List) regulations to reflect recommendations submitted to the Secretary of Agriculture (Secretary) by the National Organic Standards Board (NOSB) on August 17, 2005. Consistent with the recommendations from the NOSB, this final rule adds one substance, along with any restrictive annotations, to two sections of the National List. This final rule also clarifies the use and prohibition of chitosan.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/12/10/E7-23880/national-organic-program-nop-amendments-to-the-national-list-of-allowed-and-prohibited-substances)
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