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221341

Sigma-Aldrich

Sodium nitrate

ACS reagent, ≥99.0%

Synonym(s):

Chile salpeter

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About This Item

Empirical Formula (Hill Notation):
NaNO3
CAS Number:
7631-99-4
Molecular Weight:
84.99
EC Number:
231-554-3
MDL number:
MFCD00011119
UNSPSC Code:
12352302
PubChem Substance ID:
329752261
NACRES:
NA.21

grade

ACS reagent

Agency

suitable for EPA 1621
suitable for EPA 300

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.

Pictograms

Flame over circleExclamation mark
GHS03,GHS07

Signal Word

Warning

Hazard Statements

H272,H319

Hazard Classifications

Eye Irrit. 2 - Ox. Sol. 3

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
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)
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
Calcined sodium nitrate/natural phosphate: an extremely active catalyst for the easy synthesis of chalcones in heterogeneous media.
Sebti S, et al.
Tetrahedron Letters, 42(45), 7953-7955 (2001)
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