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333662

Sigma-Aldrich

1H-1,2,3-Triazole

97%

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Synonym(s):
2,3-Diazapyrrole, 2H-1,2,3-Triazole, Osotriazole, Pyrrodiazole, Triazacyclopentadiene
Empirical Formula (Hill Notation):
C2H3N3
CAS Number:
Molecular Weight:
69.07
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

97%

form

liquid

refractive index

n20/D 1.498 (lit.)

bp

203 °C/752 mmHg (lit.)

mp

23-25 °C (lit.)

density

1.192 g/mL at 25 °C (lit.)

SMILES string

c1c[nH]nn1

InChI

1S/C2H3N3/c1-2-4-5-3-1/h1-2H,(H,3,4,5)

InChI key

QWENRTYMTSOGBR-UHFFFAOYSA-N

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This Item
A8056190683104558
1H-1,2,3-Triazole 97%

333662

1H-1,2,3-Triazole

3-Amino-1,2,4-triazole ≥95% (TLC)

A8056

3-Amino-1,2,4-triazole

1H-1,2,4-Triazole-3-thiol 97%

104558

1H-1,2,4-Triazole-3-thiol

density

1.192 g/mL at 25 °C (lit.)

density

-

density

-

density

-

refractive index

n20/D 1.498 (lit.)

refractive index

-

refractive index

-

refractive index

-

form

liquid

form

powder

form

-

form

-

mp

23-25 °C (lit.)

mp

150-153 °C (lit.)

mp

130-133 °C (lit.)

mp

221-224 °C (lit.)

bp

203 °C/752 mmHg (lit.)

bp

-

bp

-

bp

-

General description

2H-1,2,3-triazole is tautomeric form of 1H-1,2,3-triazole. 1H-1,2,3-triazole effectively promotes the proton conduction in polymer electrolyte membranes via an intermolecular proton-transfer mechanism.

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

224.6 °F - closed cup

flash_point_c

107 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter


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We report 1H-1,2,3-triazole as an active group to dramatically enhance proton conduction in a polymer electrolyte membrane (PEM). The conductivities of a poly(4-vinyl-1H-1,2,3-triazole) membrane without any acidic dopants are about 105 times greater than those of poly(4-vinylimidazole) in dry air
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