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221295

Potassium nitrate

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
KNO3
CAS Number:
7757-79-1
Molecular Weight:
101.10
NACRES:
NA.21
PubChem Substance ID:
329752256
UNSPSC Code:
12352302
EC Number:
231-818-8
MDL number:
MFCD00011409
Assay:
≥99.0%
Grade:
ACS reagent
Form:
crystals
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grade

ACS reagent

Quality Segment

200

assay

≥99.0%

form

crystals

impurities

≤0.005% insolubles

pH

4.5-8.5 (25 °C, 5%)

mp

334 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%, 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%, Na: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

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

InChI

1S/K.NO3/c;2-1(3)4/q+1;-1

InChI key

FGIUAXJPYTZDNR-UHFFFAOYSA-N

General description

Potassium nitrate is a water-soluble inorganic salt that is commonly used as nitrogen fertilizer. It is also found in toothpastes as a desensitizer for tooth hypersensitivity. The addition of KNO3 to growth medium has shown to promote growth in salt stressed melon plants.

Application

Potassium nitrate may be used in the synthesis of 5-bromo-8-nitroisoquinoline via bromination of isoquinoline using N-bromosuccinimide.

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pictograms

Flame over circle
GHS03

signalword

Warning

hcodes

H272

Hazard Classifications

Ox. Sol. 3

Storage Class

5.1B - Oxidizing hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Group 1: Oxidizing solids + Nitrates + Hazardous rank I + 1st oxidizing solid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

221295-100G:4.548173390345E12 + 221295-500G:4.548173390352E12

jan

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