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12038

Sigma-Aldrich

Calcium hydroxide

puriss., meets analytical specification of Ph. Eur., USP, FCC, 95-100.5% (complexometric)

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About This Item

Linear Formula:
Ca(OH)2
CAS Number:
Molecular Weight:
74.09
EC Number:
MDL number:
UNSPSC Code:
12352305
PubChem Substance ID:
NACRES:
NA.21
form:
powder

grade

puriss.

Assay

95-100.5% (complexometric)

form

powder

quality

meets analytical specification of Ph. Eur., USP, FCC

impurities

≤0.2% insoluble in hydrochloric acid
≤2.5% subst. not precip. by ammonium oxalate (as SO4)

pH

12.4-12.6 (20 °C)

density

2.24 g/mL at 25 °C (lit.)

anion traces

fluoride (F-): ≤50 mg/kg

cation traces

As: ≤3 mg/kg
Cu: ≤10 mg/kg
Fe: ≤1000 mg/kg
Pb: ≤2 mg/kg
Zn: ≤10 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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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

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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
Nikte Gómez-Ortíz et al.
ACS applied materials & interfaces, 5(5), 1556-1565 (2013-01-26)
The presence and deteriorating action of microbial biofilms on historic stone buildings have received considerable attention in the past few years. Among microorganisms, fungi are one of the most damaging groups. In the present work, antimicrobial surfaces were prepared using
P Sangwan et al.
International endodontic journal, 46(1), 3-19 (2012-08-15)
Calcium hydroxide has been used extensively in dentistry for a century. Despite its widespread use as a pulp-capping agent, its mechanisms of action still remain ambiguous. Understanding its modes of action will lead to a broader understanding of the mechanisms
J F Siqueira et al.
International endodontic journal, 32(5), 361-369 (1999-11-07)
Literature review The primary function of calcium hydroxide as a routine intracanal medicament is to provide antimicrobial activity. However, the mechanisms of antimicrobial activity of calcium hydroxide are not well known. Physicochemical properties of this substance may limit its effectiveness
B Athanassiadis et al.
Australian dental journal, 52(1 Suppl), S64-S82 (2007-06-06)
Bacteria have been implicated in the pathogenesis and progression of pulp and periapical diseases. The primary aim of endodontic treatment is to remove as many bacteria as possible from the root canal system and then to create an environment in

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