21 C.F.R. § 582.6807 Sodium thiosulfate.
Title 21 - Food and Drugs
(a) Product. Sodium thiosulfate. (b) Tolerance. 0.1 percent. (c) Limitations, restrictions, or explanation. This substance is generally recognized as safe when used in salt in accordance with good manufacturing or feeding practice.
Title 21: Food and Drugs
PART 582—SUBSTANCES GENERALLY RECOGNIZED AS SAFE
Subpart G—Sequestrants
§ 582.6807 Sodium thiosulfate.

