# Propylene glycol alginate — Food additive regulatory approval status — US FDA vs EU

For Propylene glycol alginate, jurisdiction is US FDA (21 CFR 172–178); status is permitted; citation is 21 CFR 172.858; cas no. is 9005-37-2, recorded from its source on 2026-08-15.

- **Additive:** Propylene glycol alginate _(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 172.858 _(our reading, not quoted from the source)_
- **CAS No.:** 9005-37-2 _(verified: appears in the quote below)_

## What the source says

> § 172.858 Propylene glycol alginate. The food additive propylene glycol alginate (CAS Reg. No. 9005-37-2) may be used as an emulsifier, flavoring adjuvant, formulation aid, stabilizer, surfactant, or thickener in foods in accordance with the following prescribed conditions:

## 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/).