221341

Sigma-Aldrich

Sodium nitrate

ACS reagent, ≥99.0%

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

Quality Level

grade

ACS reagent

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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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.

Packaging

500 g in poly bottle
2.5 kg in poly bottle

pictograms

Flame over circleExclamation mark

signalword

Warning

hazcat

Eye Irrit. 2 - Ox. Sol. 3

storage_class_code

5.1B - Oxidizing hazardous materials

WGK Germany

WGK 1

Flash Point F

does not flash

Flash Point C

does not flash

Certificate of Analysis

Certificate of Origin

Trifluoroacetic acid as a medium for aromatic nitration using sodium nitrate.
Spitzer UA & 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)
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)
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...
E T Urbansky et al.
Environmental pollution (Barking, Essex : 1987), 112(3), 299-302 (2001-04-09)
Paleogeochemical deposits in northern Chile are a rich source of naturally occurring sodium nitrate (Chile saltpeter). These ores are mined to isolate NaNO3 (16-0-0) for use as fertilizer. Coincidentally, these very same deposits are a natural source of perchlorate anion...

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