{"data":{"id":"us/21-cfr-182.1711","jurisdiction":"us","citation":"21 CFR 182.1711","heading":"Silica aerogel.","body":"(a) Product. Silica aerogel as a finely powdered microcellular silica foam having a minimum silica content of 89.5 percent.\n(b) [Reserved]\n(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.","path":["Title 21—Food and Drugs","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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"64ef3acd106a7eee3b325fc4f255510625ad8445699cd197ce260eba78266187","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-182.1516","next":"us/21-cfr-182.1745"},"notice":"GroundRules: Original legal text. Not legal advice."}