---
kind: "section"
citation: "21 C.F.R. § 182.1745"
title: "21"
number: "182.1745"
heading: "Sodium carboxymethylcellulose."
url: "https://uscodex.org/cfr/21/182.1745"
---

# §182.1745. Sodium carboxymethylcellulose.

- (a) **Product.** Sodium carboxymethylcellulose is the sodium salt of carboxymethylcellulose not less than 99.5 percent on a dry-weight basis, with maximum substitution of 0.95 carboxymethyl groups per anhydroglucose unit, and with a minimum viscosity of 25 centipoises for 2 percent by weight aqueous solution at 25 °C.
- (b) **Conditions of use.** This substance is generally recognized as safe when used in accordance with good manufacturing practice.

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 348, 371.

### Source

Source: 42 FR 14640, Mar. 15, 1977, unless otherwise noted.