# National Organic Program: Amendments to the National List of Allowed and Prohibited Substances for 2017 NOSB Recommendations (Livestock and Handling)
> **Agricultural Marketing Service** · Final rule. · Published 2019-04-30 · Effective 2019-05-30 · 84 FR 18133
## Document
- **Document number:** 2019-08700
- **Category:** organic
- **Sub-agency:** Agricultural Marketing Service
- **Federal Register citation:** 84 FR 18133
- **CFR reference:** 7 CFR 205
- **Publication date:** 2019-04-30
- **Effective date:** 2019-05-30
- **USDA docket:** Document Number AMS-NOP-17-0080
## Abstract

This final rule amends the National List of Allowed and Prohibited Substances (National List) section of the United States Department of Agriculture's (USDA's) organic regulations to implement recommendations submitted to the Secretary of Agriculture (Secretary) by the National Organic Standards Board (NOSB). This rule adds elemental sulfur to the National List for use in organic livestock production and reclassifies potassium acid tartrate from a non- agricultural substance to an agricultural substance and requires the organic form of the ingredient when commercially available. This rule also corrects the amendatory instructions to ensure proper placement of the regulatory text.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/04/30/2019-08700/national-organic-program-amendments-to-the-national-list-of-allowed-and-prohibited-substances-for)
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