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Electronic Code of Federal Regulations

e-CFR data is current as of January 16, 2020

Title 21Chapter ISubchapter EPart 573Subpart B → §573.940


Title 21: Food and Drugs
PART 573—FOOD ADDITIVES PERMITTED IN FEED AND DRINKING WATER OF ANIMALS
Subpart B—Food Additive Listing


§573.940   Silicon dioxide.

The food additive silicon dioxide may be safely used in animal feed 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 or intended for use in feed components as an anticaking agent, and/or grinding aid, as follows:

Feed componentLimitations (percent)
BHT (butylated hydroxytoluene)2
Methionine hydroxy analog and its calcium salts1
Piperazine, piperazine salts0.8
Sodium propionate1
Urea1
Vitamins3

(c) It is used in feed as an anticaking agent in an amount not to exceed that reasonably required to accomplish its intended effect and in no case in an amount to exceed 2 percent by weight of the finished feed.

(d) It is used or intended for use in feed components, as a carrier as follows:

Feed componentLimitations
(percent)
Flavors50
Selenomethionine hydroxy analogue95

(e) To ensure safe use of the additive, silicon dioxide is to be used in an amount not to exceed that reasonably required to accomplish its intended effect, and silicon dioxide from all sources cannot exceed 2 percent by weight of the complete feed.

[41 FR 38652, Sept. 10, 1976, as amended at 83 FR 8930, Mar. 2, 2018; 84 FR 7993, Mar. 6, 2019]

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