LabelGuard
Sign InGet Started
Ingredient Guide

🇺🇸 Carboxymethylcellulose (CMC) on Food Labels in US

Carboxymethylcellulose (CMC) is permitted with proper declaration in United States: declare as "carboxymethylcellulose or cellulose gum" in the ingredient list.

Check My Label for US CompliancePaste Ingredients List
What the Rule Is

Synthetic cellulose-derived thickener and stabilizer widely used in ice cream, sauces, and gluten-free products. In United States, Carboxymethylcellulose (CMC) is regulated under FDCA & FSMA as a food thickener. FDA GRAS (21 CFR 182.1745). Both names are acceptable in ingredient list. No E-number required.

What You Must Include
  • Declare as "carboxymethylcellulose or cellulose gum" in the ingredient list
  • Declare with functional class: "thickener" and E-number E466
  • Review all compound ingredients for hidden sources
  • Cross-check all compound ingredients and sub-ingredients for hidden sources
Common Violations
  • Incorrect or missing declaration name — must use "carboxymethylcellulose or cellulose gum"
  • Using an ambiguous or abbreviated name that does not identify Carboxymethylcellulose (CMC)
  • Omitting the E-number E466 where required
  • Not updating the label after recipe changes involving this ingredient
  • Failing to check compound ingredients for hidden Carboxymethylcellulose (CMC) content
Examples: Compliant vs Non-Compliant

Compliant Examples

"thickener: carboxymethylcellulose or cellulose gum"
"carboxymethylcellulose or cellulose gum" in ingredient list
Full ingredient line: "Ingredients: ... carboxymethylcellulose or cellulose gum ..."

Non-Compliant Examples

Using a synonym (Cellulose gum, E466) without the approved declaration name
Ingredient list with "Carboxymethylcellulose (CMC)" without functional class or E-number
"Natural [ingredient category]" without specific name where specific name is required
How LabelGuard Checks This

LabelGuard scans your label for Carboxymethylcellulose (CMC) and all its common names (CMC, Cellulose gum, E466, Sodium carboxymethylcellulose) to verify correct declaration, required E-numbers, and proper functional class labeling under US rules.

Start Your Compliance Check
Frequently Asked Questions

How must Carboxymethylcellulose (CMC) be declared on food labels in US?

Declare as "carboxymethylcellulose or cellulose gum" in the ingredient list. FDA GRAS (21 CFR 182.1745). Both names are acceptable in ingredient list. No E-number required.

What are the common synonyms and hidden sources of Carboxymethylcellulose (CMC)?

Carboxymethylcellulose (CMC) may appear under the following names: CMC, Cellulose gum, E466, Sodium carboxymethylcellulose, Sodium CMC. Common hidden sources include: Ice cream, Salad dressings, Gluten-free bread, Cream cheese, Toothpaste, Some beverages.

Is Carboxymethylcellulose (CMC) banned or restricted in any market?

Carboxymethylcellulose (CMC) is permitted in all major markets with proper declaration.

Regulation Sources

Last updated: 2026-04-01

Disclaimer: This information is for guidance only and does not constitute legal advice. Always consult official regulations and seek professional legal advice for specific compliance questions.

Ensure US Compliance

Get your label checked against all US regulations in seconds.

  • AI-powered compliance check
  • 200+ regulatory checks
  • Detailed violation reports
  • Fix suggestions included
Start Compliance Check

Starting at $29 per label check

Related Resources
US Compliance Hub

Explore all US labeling requirements in one place.

View US Hub

Ready to Ensure Full US Compliance?

LabelGuard checks your labels against all FDCA & FSMA requirements in seconds. Catch violations before they cost you.

Start Your First Check - $29View Pricing Plans

Trusted by food manufacturers, supplement brands, and compliance teams worldwide