Comparing E170 - Calcium carbonates vs E172 - Iron oxides and iron hydroxides

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Overview

E170 - Calcium carbonates

Calcium carbonates (E170) are white, mineral-based additives used in many foods. They add whiteness, keep powders free‑flowing, adjust acidity, and can add calcium. Regulators in the U.S. and EU allow their use within good manufacturing practice.

E172 - Iron oxides and iron hydroxides

Iron oxides and iron hydroxides (E172) are mineral pigments used to give foods red, yellow, brown, or black shades. They are insoluble, stable colors made under strict purity standards and are used mainly on the surface of foods, such as coatings and decorations. Rules vary by country: they are widely authorized in the EU, while uses in the U.S. are more limited.

Synonyms

E170

Calcium carbonates

E172

Iron oxides and iron hydroxides

Functions

acidity regulator anticaking agent carrier colour

colour

Origins

Products

Found in 1,542 products

Found in 23 products

Search rank & volume

#2611.5K / mo🇺🇸U.S.

#47150 / mo🇺🇸U.S.

Awareness score

×0.15

under-aware

×0.44

under-aware

Search volume over time

Interest over time for 2 keywords in U.S. during the last 10 years.

Search history data is not available.

Popular questions

Who makes the e170 aircraft?
In food labeling, E170 refers to calcium carbonates, not an aircraft; they’re made by many ingredient suppliers, typically sourced from mined limestone or produced by reacting calcium hydroxide with carbon dioxide (precipitated calcium carbonate).
Who makes e170 airplane?
E170 in foods means calcium carbonates, not an airplane; they are supplied by numerous food-grade mineral producers, either mined (ground calcium carbonate) or made by precipitation from calcium hydroxide and CO2.
Calcium carbonates is most likeye to dissolve in water with which characteristics?
Calcium carbonate is nearly insoluble in neutral water but dissolves in acidic or carbonated water (low pH, high dissolved CO2) by forming calcium bicarbonate.
E170 aircraft who makes?
On food labels, E170 denotes calcium carbonates rather than an aircraft; they are manufactured by various companies from limestone or via precipitation using calcium hydroxide and carbon dioxide.
How are calcium carbonates formed?
They form naturally by precipitation of calcium and carbonate ions in water and by biomineralization in shells and eggs, and industrially by reacting calcium hydroxide with carbon dioxide (precipitated calcium carbonate); they can also precipitate from hard water as limescale.