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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
Calcium oxide

Inventory

EC number:
215-138-9
EC name:
Calcium oxide
CAS number:
1305-78-8
CAS number:
1305-78-8
Synonyms
Names:
Building lime
Burnt lime
Calcia
Calcium monoxide
Calcium oxide (CaO)
Chemical lime
Fat lime
Fluxing lime
Hard burnt lime
LIme
Pebble lime
Quicklime
Soft burnt lime
Unslaked lime
Identifier:
IUPAC name
oxocalcium
Identifier:
other: InChl
InChI=1/Ca.O/rCaO/c1-2
Identifier:
other: SMILES notation
O=[Ca]

Molecular and structural information

Molecular formula:
CaO
Molecular weight:
ca. 56.077
SMILES notation:
[Ca]=O
InChl:
InChI=1/Ca.O/rCaO/c1-2
Structural formula:
Chemical structure

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