# Yellow prussiate of soda — Food additive regulatory approval status — US FDA vs EU

For Yellow prussiate of soda, jurisdiction is US FDA (21 CFR 172–178); status is permitted; citation is 21 CFR 172.490; use conditions is anticaking agent in salt and adjuvant in production of dendritic crystals of salt, recorded from its source on 2026-08-15.

- **Additive:** Yellow prussiate of soda _(verified: appears in the quote below)_
- **Jurisdiction:** US FDA (21 CFR 172–178) _(our reading, not quoted from the source)_
- **Status:** permitted _(our reading, not quoted from the source)_
- **Citation:** 21 CFR 172.490 _(our reading, not quoted from the source)_
- **Use conditions:** anticaking agent in salt and adjuvant in production of dendritic crystals of salt

## What the source says

> The food additive yellow prussiate of soda (sodium ferrocyanide decahydrate; Na 4 Fe(CN) 6

## Source

- https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-172

Last verified: 2026-08-15. Review by: 2027-08-15.
Part of [Food additive regulatory approval status — US FDA vs EU](https://referencesource.org/food-additive-approval-status-us-vs-eu/).