Carboxymethyl Cellulose

Carboxymethyl Cellulose carries a safety score of 2/5 and appears in 154 indexed US food products. CSPI rates it “Caution.”

Safety score 40.0%

2/5 from FDA SAFFA + CSPI Chemical Cuisine

How common is Carboxymethyl Cellulose vs other flagged additives?

Number of indexed products containing each of the most common flagged additives - Carboxymethyl Cellulose highlighted.

Caramel Coloring22612Red 4021595Yellow 518987Carrageenan17853Blue 116643Yellow 613560Sucralose10490Carboxymethyl Cellulose154
Indexed products containing each flagged additive. Source: Open Food Facts ingredient lists × FDA SAFFA × CSPI Chemical Cuisine.
CSPI Rating
Caution
FDA Status
GRAS
Safety Score
2/5

Function

ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT, HUMECTANT, SOLVENT OR VEHICLE, STABILIZER OR THICKENER, SURFACE-ACTIVE AGENT

Safety Assessment

Carboxymethyl Cellulose has a lower safety score (2/5), indicating notable concerns from food safety researchers or advocacy organizations. Individuals with sensitivities should consider alternatives. CSPI recommends limiting consumption of this ingredient.

What the Data Says About Carboxymethyl Cellulose

Carboxymethyl Cellulose currently appears in 154 products across the OpenFoodFacts catalog we index, which gives a concrete measure of its footprint on US grocery shelves. Our internal safety score of 2/5 synthesizes FDA Substances Added to Food (SAFFA) regulatory status - currently "GRAS" - with the Center for Science in the Public Interest (CSPI) Chemical Cuisine classification of "Caution." That Caution rating marks a gap between the two lenses: FDA's SAFFA status covers typical intake, while CSPI's review flags cumulative exposure across a modern diet as the open question this score doesn't resolve on its own.

In food manufacturing, Carboxymethyl Cellulose functions as a anticaking agent or free-flow agent, drying agent, emulsifier or emulsifier salt, humectant, solvent or vehicle, stabilizer or thickener, surface-active agent. That technical role explains why it recurs across many product categories, formulators select specific additives for stability, shelf life, color, or texture performance, and substitution is rarely a one-for-one swap when regulations or consumer preferences shift. Inspection and outbreak data often trace back to breakdown in the control of exactly these kinds of functional ingredients, either through contaminated batches, undisclosed substitutions, or labeling errors that trigger FDA-initiated recalls.

No specific concern flags are attached to Carboxymethyl Cellulose in our current data snapshot beyond the regulatory and CSPI classifications above. That does not rule out individual sensitivity reactions, and anyone managing allergies, elimination diets, or chronic conditions should verify with a qualified healthcare professional before relying on population-level ratings.

Safety Profile at a Glance

Regulatory and safety classifications for Carboxymethyl Cellulose
Source Classification Year
FDA SAFFA GRAS 2024
CSPI Chemical Cuisine Caution 2024
PlainFoodSafe Score 2/5 2026
Product footprint 154 products OpenFoodFacts

FDA SAFFA database, CSPI Chemical Cuisine ratings, OpenFoodFacts product index. See methodology.

Frequently Asked Questions

Is Carboxymethyl Cellulose safe to eat?

Carboxymethyl Cellulose has a safety score of 2/5. The Center for Science in the Public Interest (CSPI) rates it as "Caution." FDA status: GRAS. Always check with a healthcare provider if you have specific dietary concerns.

What products contain Carboxymethyl Cellulose?

Carboxymethyl Cellulose is found in 154 products in our database, spanning various food categories and brands.

What does Carboxymethyl Cellulose do in food?

Carboxymethyl Cellulose is used as a anticaking agent or free-flow agent, drying agent, emulsifier or emulsifier salt, humectant, solvent or vehicle, stabilizer or thickener, surface-active agent in food products.

Citation notes Regulatory status from FDA SAFFA; safety ratings from CSPI Chemical Cuisine; product presence from Open Food Facts. See our methodology. Retrieved and formatted by PlainFoodSafe Editorial.

Every figure on PlainFoodSafe is rendered directly from OpenFoodFacts and FDA data, no number is typed in by an editor. Ingredient figures are computed directly from OpenFoodFacts, FDA SAFFA, and CSPI Chemical Cuisine data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.