Azide Ion

CAS Number 14343-69-2
Molecular Formula N3
Molecular Weight 42.022 g/mol
InChI Key IVRMZWNICZWHMI-UHFFFAOYSA-N
LogP 1.16
Synonyms
  • Azide
  • 14343-69-2
  • Triazide
  • Azide(1-)
  • Azide (N3-)
  • Azide ion
  • Azide ion(1-)
  • Hydrazoate
  • Hydrazoic acid, ion(1-)
  • Nitrogen ion (N3-)
  • Trinitrogen ion (N3-)
  • Hydrazoic acid, ion (1-)
  • UNII-88BIA49L8P
  • 15034-27-2

Applications:


Retention of Azide Ion on Obelisc N Column
Sodium azide is a salt of weak hydrazoic acid with pKa 4.5-4.7. Sodium azide is very toxic. It is typically used as a stabilizer for aqueous solution to suppress bacteria grows. Chromatography separation is based on weak ionic interaction of the partially ionized hydrazoic acid with positively charged column surface. Additional polar interaction is a result of high acetonitrile concentration in the mobile phase.  

Condition

Column Obelisc N, 2.1x150 mm, 5 µm, 100A
Mobile Phase MeCN
Buffer AmAc
Flow Rate 1.0 ml/min
Detection UV, 250 nm
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Description

Class of Compounds  Base,  Hydrophobic, Ionizable
Analyzing Compounds Azide


Application Analytes:

Azide Ion
Hydrazoic acid
Sodium azide

HPLC Analysis of Azide Ion on Obelisc N Column
Sodium azide is used in older car airbag systems and airplane escape slides. It is an acutely toxic substance. Obelisc N mixed-mode column can retain the azide ion using MS-compatible mobile phase of acetonitrile (ACN) and water with Ammonium Acetate as buffer. Can also be UV detected at 250nm.

Condition

Column Obelisc N, 4.6x150 mm, 5 µm, 100A
Mobile Phase MeCN/H2O - 85/15%
Buffer AmAc pH 5- 10 mM
Flow Rate 1.0 ml/min
Detection UV, 250 nm
 

Description

Class of Compounds Anion, Hydrophilic, Ionizable
Analyzing Compounds Azide
 

Application Analytes:

Azide Ion

HPLC Determination of Sodium Azide on Newcrom B Column
HPLC.cloud View on hplc.cloud

Condition

Column Newcrom B, 4.6x150 mm, 3 µm, 100A
Mobile Phase MeCN/H2O - 10/90%
Buffer Acetic Acid -  0.5 %
Flow Rate 1.0 ml/min
Detection UV 260 nm, MS- compatible mobile phase

Description

Class of Compounds Hydrophilic,  Negative
Analyzing Compounds Sodium Azide


Application Analytes:

Azide Ion
Sodium azide