21 CFR § 186.1750 - Sodium chlorite.

---
identifier: "/us/cfr/t21/s186.1750"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 186.1750 - Sodium chlorite."
title_number: 21
title_name: "Food and Drugs"
section_number: "186.1750"
section_name: "Sodium chlorite."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "186"
part_name: "INDIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 342, 348, 371."
regulatory_source: "42 FR 14658, Mar. 15, 1977, unless otherwise noted."
cfr_part: "186"
---


# 186.1750 Sodium chlorite.

(a) Sodium chlorite (NaCLO<sub>2</sub>, CAS Reg. No. 7758-19-2) exists as slightly hygroscopic white crystals or flakes. It is manufactured by passing chlorine dioxide into a solution of sodium hydroxide and hydrogen peroxide.

(b) the ingredient is used at levels from 125 to 250 parts per million as a slimicide in the manufacture of paper and paperboard that contact food.

[45 FR 16470, Mar. 14, 1980]