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Merck
CN

13444

Sigma-Aldrich

Sodium nitrate

meets analytical specification of FCC, E251, 99.0-100.5%

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:
329750176
Assay:
99.0-100.5%
Form:
solid
Solubility:
H2O: soluble 1 gm in 0.6 ml (Boiling)
H2O: soluble 1 gm in 1.1 ml
alcohol: soluble 1 gm in 125 ml
alcohol: soluble 1 gm in 52 ml (Boiling)

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Assay

99.0-100.5%

form

solid

quality

meets analytical specification of FCC, E251

impurities

residual solvents, complies
≤0.02% total halogen compounds (as Cl)

pH

5-7 (20 °C, 5%)

mp

306 °C (dec.) (lit.)

solubility

H2O: soluble 1 gm in 0.6 ml (Boiling)
H2O: soluble 1 gm in 1.1 ml
alcohol: soluble 1 gm in 125 ml
alcohol: soluble 1 gm in 52 ml (Boiling)

anion traces

chloride (Cl-): ≤10 mg/kg
nitrite (NO2-): ≤10 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤2 mg/kg
Ca: ≤50 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
K: ≤100 mg/kg
Mg: ≤20 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

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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Application

Sodium nitrate has been used as a test compound for estimating the NO production by assessing the concentration of nitrate and nitrite in the media. It has also been used for measuring the nitrite content in saliva.

Biochem/physiol Actions

Sodium nitrate reduces the chloride and sodium reabsorption in the distal nephron.

Pictograms

Flame over circleExclamation mark
GHS03,GHS07

Signal Word

Warning

Hazard Statements

H272,H319

Precautionary Statements

P210 - P305 + P351 + P338

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

Regulatory Information

危险化学品
易制爆化学品
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HåKan Björne H et al.
The Journal of clinical investigation, 113(1), 106-114 (2004-01-01)
Salivary nitrate from dietary or endogenous sources is reduced to nitrite by oral bacteria. In the acidic stomach, nitrite is further reduced to NO and related compounds, which have potential biological activity. We used an in vivo rat model as
T Kahn et al.
The American journal of physiology, 229(3), 746-753 (1975-09-01)
Effects of sodium nitrate were compared with sodium chloride loading on transport of electrolytes by the nephron. Maximal levels of free water clearance/clomerular filtration rate (CH2O/GFR) averaged 8.4% with nitrate loading and 14.4% with saline loading. Since ethacrynic acid and
Sang-Jin Shin et al.
Journal of applied physiology (Bethesda, Md. : 1985), 95(1), 308-313 (2003-04-01)
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