Systematic name
Oxocalcium
Other names, synonyms
Lime; Quicklime; Burnt lime; Unslaked lime; Free lime; Caustic lime; Pebble lime; Calcia; Oxide of calcium
INCI name
CALCIUM OXIDE
Molecular formula and structural formula of Calcium oxide:
CaO
Mr = 56.077 g/mol
Oxocalcium
SMILES: O=[Ca]
In its pure state, calcium oxide is a white, odorless powder.
Mass-related elemental composition and isotope proportions of the compound Calcium oxide - CaO - calculated based on molecular mass.
*) The third column lists the atomic masses or isotope masses of the elements involved and - in square brackets - the natural isotope composition.
The molar mass is M = 56.077 grams per mole.
The amount of substance in one kilogram of the substance is n = 17.833 mol.
The amount of substance in one gram of the substance is n = 0.018 mol.
Monoisotopic mass: 55.957505519 Da - related to 40Ca16O.
E-Nummer: E529
Approved food additive with the E number E529.
EU: Status and regulations see EU Food Additives DB Ref. Number 3226.
INCI Name: CALCIUM OXIDE
Calcium oxide is an ingredient in cosmetic products, functioning as a buffering agent.
Source: CosIng (Cosmetic Ingredient Database) number: 74908.
(General information without guarantee of accuracy and completeness! The information does not replace the chemical safety data sheet or a risk assessment, but rather provides a general overview of the risk posed by the hazardous substance.


Signal word: Danger
GHS hazard statements (H phrases):
Labeling in the EU: See ECHA Substance Infocard 100.013.763.
For toxicology and occupational safety when handling Calcium oxide as well as measures to be taken in case of danger, see: Hazardous Substances Information System GESTIS, ZVG-Nr. 001200.
International Chemical Safety Card ICSC (SDS, MSDS): See ICSC: 0409.
Note: The labeling requirement according to the CLP Regulation (EU) does not apply, among other things, to certain substances and mixtures for end users that are in the form of finished products, such as pharmaceuticals, veterinary drugs, cosmetics, certain medical products and medical devices, food or feed, as well as certain Food additives or flavorings. Special legal regulations may need to be adhered to here.
The table below lists producers and suppliers of Calcium oxide as a commercial chemical for laboratories, research, industry and production with the corresponding contact details.
[0] - Specialist and research articles in scientific journals via PubMed: Calcium_oxide.
Last update:
Perma link: https://www.chemlin.org/chemical-compound/Calcium oxide.php
© 1996 - 2026 ChemLin