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450146

Sigma-Aldrich

Calcium hydroxide

99.995% trace metals basis

Synonym(s):

Calcium dihydroxide, Carboxide

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About This Item

Linear Formula:
Ca(OH)2
CAS Number:
1305-62-0
Molecular Weight:
74.09
EC Number:
215-137-3
MDL number:
MFCD00010901
UNSPSC Code:
12352302
PubChem Substance ID:
24868536
NACRES:
NA.23

Quality Level

100

assay

99.995% trace metals basis

form

powder

impurities

<3% calcium carbonate

density

2.24 g/mL at 25 °C (lit.)

SMILES string

O[Ca]O

InChI

1S/Ca.2H2O/h;2*1H2/q+2;;/p-2

InChI key

AXCZMVOFGPJBDE-UHFFFAOYSA-L

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General description

This strong base dissociates into calcium and hydroxyl ions in an aqueous solution.

Application

Calcium hydroxide may be used for the preparation of nanocrystalline hydroxyapatite by sonochemical technique.Ca(OH)2 may be used as a catayst in the pyrolysis of pinewood in a fixed bed reactor.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCN2764
MKCF9538
MKBC4261V
MKBC4261
MKBB6371

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Calcium hydroxide: a review.
Farhad A and Mohammadi Z
International Dental Journal, 55(5) (2005)
Structural and proton transport studies on nanocrystalline [Ca10 (PO4) 6 (OH) 2](HAp), HAp?Nafion? composite, and natural human bone.
Jena H, et al.
Physica Status Solidi (A): Applied Research, 206(11), 2536-2541 (2009)
Pyrolysis of pine wood in a slowly heating fixed-bed reactor: Potassium carbonate versus calcium hydroxide as a catalyst
Wang Z, et al.
Fuel Processing Technology, 91(8), 942-950 (2010)
Lisbet Mailin López González et al.
Bioresource technology, 131, 250-257 (2013-01-29)
Different pre-treatment severities by thermo-alkaline conditions (100°C, Ca(OH)2) on press mud were evaluated for different pre-treatment time and lime loading. COD solubilization and the methane yield enhancement were assessed. The biochemical methane potential was determined in batch assays under mesophilic
T J Hilton et al.
Journal of dental research, 92(7 Suppl), 16S-22S (2013-05-22)
This practice-based, randomized clinical trial evaluated and compared the success of direct pulp capping in permanent teeth with MTA (mineral trioxide aggregate) or CaOH (calcium hydroxide). Thirty-five practices in Northwest PRECEDENT were randomized to perform direct pulp caps with either
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