C.F.R. » Title 21 » CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES › SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION › PART 182—SUBSTANCES GENERALLY RECOGNIZED AS SAFE › Subpart B—Multiple Purpose GRAS Food Substances

21 C.F.R. § 182.1711

Silica aerogel

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(a) Product. Silica aerogel as a finely powdered microcellular silica foam having a minimum silica content of 89.5 percent.

(b) [Reserved]

(c) Limitations, restrictions, or explanation. This substance is generally recognized as safe when used as a component of an anti-foaming agent in accordance with good manufacturing practice.