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237124

Sigma-Aldrich

Calcium nitrate tetrahydrate

ACS reagent, 99%

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About This Item

Linear Formula:
Ca(NO3)2 · 4H2O
CAS Number:
Molecular Weight:
236.15
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NB.24
grade:
ACS reagent
form:
flakes
powder, crystals or granules

grade

ACS reagent

Quality Level

Assay

99%
99.0-103.0% (ACS specification)

form

flakes
powder, crystals or granules

impurities

≤0.005% insolubles

pH

5.0-7.0 (25 °C, 5%)

mp

44 °C (dec.) (lit.)

density

1.86 g/mL at 25 °C

anion traces

chloride (Cl-): ≤0.005%
nitrite (NO2-): ≤0.001%
sulfate (SO42-): ≤0.002%

cation traces

Ba: ≤0.005%
Fe: ≤5 ppm
K: ≤0.005%
Mg: ≤0.05%
Na: ≤0.01%
Sr: ≤0.05%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

O.O.O.O.[Ca++].[O-][N+]([O-])=O.[O-][N+]([O-])=O

InChI

1S/Ca.2NO3.4H2O/c;2*2-1(3)4;;;;/h;;;4*1H2/q+2;2*-1;;;;

InChI key

ICSSIKVYVJQJND-UHFFFAOYSA-N

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General description

Calcium nitrate tetrahydrate is an inorganic compound and can be used in cooling baths and wastewater management.

Application

Calcium nitrate tetrahydrate is used:
As a calcium precursor in the synthesis of nano-hydroxyapatite (HA) particles by sol-gel precipitation method along with potassium precursor potassium dihydrogen phosphate.
As a precursor along with diammonium hydrogen phosphate in the synthesis of nano-hydroxyapatite (n-HAP) by a wet chemical technique.
In the fabrication of 58S bioactive glass with the composition consisting of ternary system SiO2 (58 wt%) - CaO (33 wt%) - P2O5 (9wt%).

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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