---
kind: "section"
citation: "21 C.F.R. § 173.55"
title: "21"
number: "173.55"
heading: "Polyvinylpyrrolidone."
url: "https://uscodex.org/cfr/21/173.55"
---

# §173.55. Polyvinylpyrrolidone.


The food additive polyvinylpyrroli-done may be safely used in accordance with the following prescribed conditions:

- (a) The additive is a polymer of purified vinylpyrrolidone catalytically produced, having an average molecular weight of 40,000 and a maximum unsaturation of 1 percent, calculated as the monomer, except that the polyvinylpyrrolidone used in beer is that having an average molecular weight of 360,000 and a maximum unsaturation of 1 percent, calculated as the monomer.
- (b) **The additive is used or intended for use in foods as follows—**

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 348.

### Source

Source: 42 FR 14526, Mar. 15, 1977, unless otherwise noted.