What Is Calcium Peroxide? Safety, Risks & Alternatives

CheckIt AI

⚡ Quick Facts

E-Number	E930
FDA Status	FDA permits calcium peroxide as a dough conditioner in bread and rolls (21 CFR 137.105) at levels not to exceed 75 ppm o…
EFSA Status	EFSA evaluated calcium peroxide (E 930) as a flour treatment agent. It is not approved for use in the EU as a food addit…
ADI	No ADI established (banned in EU)
Severity	Moderate Risk (6/10)

What Is Calcium Peroxide?

An inorganic compound used as a flour treatment agent and dough conditioner. When mixed with water, calcium peroxide releases hydrogen peroxide and calcium hydroxide. The hydrogen peroxide acts as an oxidizing agent that strengthens gluten in dough, producing a whiter, more elastic bread. It is also used in environmental remediation and aquaculture as an oxygen release compound.

Mechanism of Action

Calcium peroxide slowly decomposes in the presence of moisture to release hydrogen peroxide (H2O2) and calcium hydroxide (Ca(OH)2). The H2O2 oxidizes sulfhydryl (-SH) groups in gluten proteins, forming disulfide bonds that strengthen the gluten network. This results in improved dough handling, better crumb structure, and whiter bread. The bleaching effect comes from the oxidation of carotenoid pigments in flour.

📱 Want to check this yourself? Scan any product in seconds.

Get CheckIt AI Free → ★4.7 · 251+ reviews

Why People Avoid Calcium Peroxide

Regulatory Status

🇺🇸 FDA

FDA permits calcium peroxide as a dough conditioner in bread and rolls (21 CFR 137.105) at levels not to exceed 75 ppm of flour weight. It is listed as a food additive, not GRAS. FDA limits its use to specific baked goods.

🇪🇺 EFSA

EFSA evaluated calcium peroxide (E 930) as a flour treatment agent. It is not approved for use in the EU as a food additive. The EU generally prohibits chemical flour bleaching agents, including calcium peroxide, potassium bromate, and benzoyl peroxide.

Regulatory Timeline

Products Containing Calcium Peroxide (32 found in our database)

Product

Brand

Score

FRENCH TOAST STICKS, CINNAMON

Rich Products Corporation

9/100

100% WHOLE WHEAT ROUND TOP BREAD, 100% WHOLE WHEAT

Wal-Mart Stores, Inc.

10/100

SMUCKER'S, UNCRUSTABLES, REDUCED SUGAR, PEANUT BUTTER & GRAPE SPREAD SANDWICH ON WHOLE WHEAT BREAD

The J.M. Smucker Company

16/100

FRENCH TOAST STICKS, ORIGINAL

Rich Products Corporation

24/100

FRENCH TOAST STICKS

Rich Products Corporation

24/100

FRENCH TOAST STICKS

Rich Products Corporation

24/100

Uncrustables

Smuckers

24/100

Uncrustables peanut butter & strawberry jam sandwich

—

24/100

Uncrustables Peanut Butter & Mixed Berry Spread Sandwich

Smucker's

24/100

grape uncrustables

—

24/100

Safer Alternatives

Scientific Sources

📱 This is exactly what CheckIt was built for.

Download Now — It's Free → ★4.7 · 251+ reviews

Frequently Asked Questions

What is Calcium Peroxide?: An inorganic compound used as a flour treatment agent and dough conditioner. When mixed with water, calcium peroxide releases hydrogen peroxide and calcium hydroxide. The hydrogen peroxide acts as an oxidizing agent that strengthens gluten in dough, producing a whiter, more elastic bread. It is also used in environmental remediation and aquaculture as an oxygen release compound.
Is Calcium Peroxide safe?: Calcium Peroxide is FDA permits calcium peroxide as a dough conditioner in bread and rolls (21 CFR 137.105) at levels no. EFSA evaluated calcium peroxide (E 930) as a flour treatment agent. It is not approved for use in th.
Where is Calcium Peroxide banned?: Calcium Peroxide is not currently banned in any major market according to our database.
What are alternatives to Calcium Peroxide?: Safer alternatives to Calcium Peroxide include: Unbleached flour, Ascorbic acid (vitamin C) as natural dough conditioner, Long fermentation (develops gluten naturally), Stone-ground flour.
How can I avoid Calcium Peroxide?: Download CheckIt AI and scan any product's barcode or ingredient label. The app will flag Calcium Peroxide and suggest safer alternatives.
What foods contain Calcium Peroxide?: Calcium Peroxide is commonly found in: White bread, Hamburger buns, Dinner rolls, Pizza dough, Flour tortillas, English muffins. Our database has flagged it in 32 products.
What are the side effects of Calcium Peroxide?: Concerns about Calcium Peroxide include: Banned in the EU and many other countries; Chemical bleaching agent — destroys natural nutrients in flour; Releases hydrogen peroxide, a reactive oxygen species.
Is Calcium Peroxide natural or artificial?: Calcium Peroxide: Calcium peroxide slowly decomposes in the presence of moisture to release hydrogen peroxide (H2O2) and calcium hydroxide (Ca(OH)2). The H2O2 oxidizes .

⚕️ This page provides ingredient information for educational purposes only. It is not medical advice. Consult a healthcare professional for personalized dietary guidance. This information is for educational purposes only. Consult a healthcare professional for personalized dietary advice.

📋 Cite This Data

APA

CheckIt AI. (2026). "What Is Calcium Peroxide? Safety, Risks & Alternatives | CheckIt AI". Climaverse PBC. Retrieved from https://getcheck.it/ingredients/calcium-peroxide

MLA

"What Is Calcium Peroxide? Safety, Risks & Alternatives | CheckIt AI." CheckIt AI, Climaverse PBC, 2026-04-05. https://getcheck.it/ingredients/calcium-peroxide.

HTML Embed

<a href="https://getcheck.it/ingredients/calcium-peroxide">What Is Calcium Peroxide? Safety, Risks & Alternatives | CheckIt AI — CheckIt AI</a>

BibTeX

@misc{checkit2026ingredientscalciumperoxide,
  title = {What Is Calcium Peroxide? Safety, Risks & Alternatives | CheckIt AI},
  author = {CheckIt AI},
  year = {2026},
  publisher = {Climaverse PBC},
  url = {https://getcheck.it/ingredients/calcium-peroxide},
  note = {Retrieved 2026-04-05}
}

⚡ Quick Facts