E170 - Calcium Carbonate

Calcium carbonate is composed of carbonate ions and calcium ions. This white substance has a molar mass of 100.1 g/mol. Calcium carbonate is the major compound found in limestones like chalk, but also in marble.

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E170 - Calcium Carbonate:

E170 is the code assigned to calcium carbonate in the European Union's food additive classification system. Calcium carbonate is a mineral substance widely used in the food industry and is also known as food chalk or limestone.

  • Origin: Calcium carbonate is a natural mineral present in nature, often in the form of limestone. It can also be produced synthetically.
  • Physical Properties: Calcium carbonate is in the form of a fine white powder that is odorless and tasteless.

Uses in the Food Industry:

  • Filler: Calcium carbonate is used as a filler to increase the volume of a product without significantly affecting its taste.
  • pH Regulator: It can act as a pH regulator by neutralizing acidity in food products.
  • Texture Improvement: It can be used to improve the texture of certain food products, especially in bakery items.
  • Calcium Supplement: Calcium carbonate is a source of calcium, an essential mineral for bone and teeth health. As such, it is sometimes added to certain food products to increase calcium content.
  • Safety: Calcium carbonate is generally considered safe when used in accordance with good manufacturing practices and usage guidelines.
  • Labeling: When used in food products, calcium carbonate must be listed in the ingredient list on the label.
  • Other Uses: In addition to its use in the food industry, calcium carbonate is also utilized in applications such as dietary supplements, pharmaceuticals, personal care products, and the construction materials industry.

Data sheet

CAS Number
471-34-1
HS Code
28365000
Chemical Formula
CaCO₃
Appearance
Powder
Packaging
25 kg bag

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