Skip to content
Vinony
English
EnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسیहिन्दीไทย한국어中文日本語
calcium hydroxide

File:NFPA_704.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ182849· pop 72· linked from 578 articles

calcium hydroxide

Sign in to save

Also known as slaked lime, Calcium hydrate, Caustic lime, Hydrated lime, Ca(OH)2, hydralime, builders' lime

chemical compound

OverviewAI-generated

Calcium hydroxide, also referred to as calcium dihydroxide, is a chemical compound with the formula CaH₂O₂. It has a molecular mass of 73.968 and a density of 2.24. The substance melts at 44 and decomposes at 1076. Its vapor pressure is 0, and it exhibits a solubility of 0.2. The compound carries a charge of 0 and features two hydrogen bond donors and two hydrogen bond acceptors.

Safety guidelines indicate a time-weighted average exposure limit of 15. The compound is associated with a NIOSH Pocket Guide ID of 0092. It has been the subject of 9604 entries in PubMed literature and is referenced by 578 other encyclopedia articles.

Synthesized by Vinony from 23 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
CaH2O2
Molecular weight
74.09 g/mol
IUPAC name
calcium dihydroxide
SMILES
[OH-].[OH-].[Ca+2]
InChIKey
AXCZMVOFGPJBDE-UHFFFAOYSA-L
Polar surface area
2 Ų
H-bond donors
2
H-bond acceptors
2
Formal charge
0

via PubChem

Research

9,604 papers

via PubMed

Wikidata facts

Has part
oxygen
Mass
73.968
Image
Calcium hydroxide.jpg
Has use
food additive
Show 12 more facts
canonical SMILES
[OH-].[OH-].[Ca+2]
NIOSH Pocket Guide ID
0092
density
2.24
decomposition point
580
vapor pressure
0
solubility
0.2
time-weighted average exposure limit
15
Commons category
Calcium hydroxide
chemical formula
CaH₂O₂
has characteristic
bitterness
melting point
44
subject has role
bone cement
Sources (5)

via Wikidata · CC0

~11 min read

Encyclopedic overview

Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed with water. Annually, approximately 125 million tons of calcium hydroxide are produced worldwide.

Calcium hydroxide has many names, including hydrated lime, caustic lime, builders' lime, slaked lime, cal, and pickling lime. Calcium hydroxide is used in many applications, including food preparation, where it has been identified as E number E526. Limewater and milk of lime are common names for a saturated solution of calcium hydroxide.

Excerpted from Wikipedia’s “calcium hydroxide” article, available under the CC BY-SA 4.0 licence.

Gallery (8)

Available in 71 languages

Show 52 more

via Wikidata sitelinks · CC0