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221341

Sigma-Aldrich

Sodium nitrate

ACS reagent, ≥99.0%

Synonym(s):
Chile salpeter
Empirical Formula (Hill Notation):
NaNO3
CAS Number:
Molecular Weight:
84.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

Assay

≥99.0%

form

powder or crystals

impurities

≤0.005% insolubles

pH

5.5-8.3 (25 °C, 5%)

mp

306 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤0.001%
iodate (IO3-): ≤5 ppm
nitrite (NO2-): ≤0.001%
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.003%

cation traces

Ca: ≤0.005%
Fe: ≤3 ppm
Mg: ≥0.002%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

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

InChI

1S/NO3.Na/c2-1(3)4;/q-1;+1

Inchi Key

VWDWKYIASSYTQR-UHFFFAOYSA-N

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S5506S817015736
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Sodium nitrate

assay

≥99.0%

assay

≥99.0%

assay

≥99.0%

assay

≥99.995% trace metals basis

form

powder or crystals

form

powder or crystals

form

-

form

-

impurities

≤0.005% insolubles

impurities

-

impurities

<0.0005% Phosphorus (P), <0.1% Insoluble matter

impurities

-

pH

5.5-8.3 (25 °C, 5%)

pH

5.5-8 (20 °C, 50 g/L)

pH

-

pH

-

mp

306 °C (dec.) (lit.)

mp

306 °C (dec.) (lit.)

mp

306 °C (dec.) (lit.)

mp

306 °C (dec.) (lit.)

General description

Sodium nitrate is a water soluble inorganic salt that is commonly used in fertilizers. Due to its thermal stability at high temperature, it shows potential as a phase change material (PCM) for thermal energy storage.

Application

Sodium nitrate may be used for the modification of natural phosphate for use as a basic catalyst for Claisen-Schmidt condensation. It may also be used in the nitration of benzene in trifluoroacetic acid.

Pictograms

Flame over circleExclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Ox. Sol. 3

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash


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Trifluoroacetic acid as a medium for aromatic nitration using sodium nitrate.
Spitzer UA &amp; Stewart R.
The Journal of Organic Chemistry, 39(26), 3936-3937 (1974)
Characterization of sodium nitrate as phase change material.
Bauer T, et al.
International Journal of Thermophysics, 33(1), 91-104 (2012)
Chen Zhang et al.
Nutrients, 11(5) (2019-05-30)
The polysaccharide isolated from alfalfa was considered to be a kind of macromolecule with some biological activities; however, its molecular structure and effects on immune cells are still unclear. The objectives of this study were to explore the extraction and
Application of natural phosphate modified with sodium nitrate in the synthesis of chalcones: a soft and clean method.
Sebti S, et al.
J. Catal., 213(1), 1-6 (2003)
Polyol synthesis of platinum nanoparticles: control of morphology with sodium nitrate.
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Nano Letters, 4(12), 2367-2371 (2004)

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