All Photos(4)

31219

Sigma-Aldrich

Calcium hydroxide

puriss. p.a., reag. Ph. Eur., ≥96%

Linear Formula:
Ca(OH)2
CAS Number:
Molecular Weight:
74.09
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

Agency/Method

USP/NF
reag. Ph. Eur.

grade

puriss. p.a.

assay

≥96%

form

powder

impurities

≤0.03% insoluble in hydrochloric acid
≤3% CaCO3

pH

12.4-12.6 (20 °C)

density

2.24 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Cu: ≤5 mg/kg
Fe: ≤500 mg/kg
Pb: ≤2 mg/kg
Zn: ≤5 mg/kg

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

Calcium hydroxide is a calcium salt. It is employed in various pulp-capping agents and its influence on healthy and inflamed pulp has been described. Its antibacterial effects have been investigated. It has been employed in endodontic treatment.

Packaging

1 kg in poly bottle
100, 500 g in poly bottle

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

13 - Non Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

The colorimetric determination of lactic acid in biological material.
Barker SB and Summerson WH.
The Journal of Biological Chemistry, 138(2), 535-554 (1941)
The antibacterial effect of camphorated paramonochlorophenol, camphorated phenol and calcium hydroxide in the treatment of infected root canals.
A Bystrom et al.
Endodontics & dental traumatology, 1(5), 170-175 (1985-10-01)
U Schröder
Journal of dental research, 64 Spec No, 541-548 (1985-04-01)
The findings from the recent literature on pulpal cell responses to the application of calcium hydroxide to exposed pulps are described. The effect of calcium hydroxide on healthy and inflamed pulp is discussed. The effect of incorporation of calcium hydroxide...
Tronstad L, et al.
Journal of Endodontics, 7(1), 17-21 (1981)
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...

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