---
kind: "section"
citation: "21 C.F.R. § 172.480"
title: "21"
number: "172.480"
heading: "Silicon dioxide."
url: "https://uscodex.org/cfr/21/172.480"
---

# §172.480. Silicon dioxide.


The food additive silicon dioxide may be safely used in food in accordance with the following conditions:

- (a) The food additive is manufactured by vapor phase hydrolysis or by other means whereby the particle size is such as to accomplish the intended effect.
- (b) **It is used as an anticaking agent, subject to the following conditions—**
  - (1) It is used in only those foods in which the additive has been demonstrated to have an anticaking effect.
  - (2) **It is used in an amount not in excess of that reasonably required to produce its intended effect.**
  - (3) [Reserved]
  - (4) **It is used in an amount not to exceed 2 percent by weight of the food.**
- (c) It is used or intended for use as a stabilizer in the production of beer, and is removed from the beer by filtration prior to final processing.
- (d) It is used or intended for use as an adsorbent for dl-a-tocopheryl acetate and pantothenyl alcohol in tableted foods for special dietary use, in an amount not greater than that required to accomplish the intended physical or technical effect.

## Notes

### Authority

Authority: 21 U.S.C. 321, 341, 342, 348, 371, 379e.

### Source

Source: 42 FR 14491, Mar. 15, 1977, unless otherwise noted.