21 C.F.R. § 172.160 Potassium nitrate.
Title 21 - Food and Drugs
The food additive potassium nitrate may be safely used as a curing agent in the processing of cod roe, in an amount not to exceed 200 parts per million of the finished roe.
Title 21: Food and Drugs
PART 172—FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION
Subpart B—Food Preservatives
§ 172.160 Potassium nitrate.

