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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
grade:
for analytical purposes
form:
powder

grade

for analytical purposes

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

Signal Word

Danger

Hazard Statements

H315,H318,H335

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

450146-25G:4548173941356
450146-VAR:
450146-5G:4548173941363
450146-BULK:

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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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