E529

Calcium oxide

What the research shows

Not enough

published research on this page yet

How we decide

A white solid also called quicklime or burnt lime.

Written from English Wikipedia1

  • Vegan
  • Vegetarian
  • EU permitted

Regulatory status

Checked Sep 2026

Status reflects the named register on the date checked. It is not a safety rating.

How we check

Products

The 6 most-scanned of 45 products on Open Food Facts that list calcium oxide.

  • Pappadums Plain Pattak's · 100 g 1 additive
  • 8 Garlic & Coriander Poppadoms Sharwood's · 8 1 additive
  • mini poppadoms Aldi · 85 g 1 additive
  • Poppadums Marks & Spencer · 50 g 1 additive
  • Poppadoms Bilash 2 additives
  • popsdoms Sainsbury’s 1 additive

References

  1. 1Calcium oxide. Wikipedia. Accessed September 26, 2026.