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E170 (Calcium Carbonate)
Calcium carbonate used as a leavening agent in baking to release carbon dioxide and help dough rise.
Mineral or nutrientUpdated Feb 14, 2026
Health score+1.0
-5Good5
Water guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Food and supplement guidelines
- Legal limit
- Not specified
- Health guideline
- Not specified
Risks
Inhalation risk as fine dust, possible mild irritation on respiratory tract in occupational exposure, excessive ingestion may cause digestive upset
Benefits
Leavening agent aiding dough expansion, source of dietary calcium
References
Waters containing E170 (Calcium Carbonate)
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