Description
ChemicalBook > CAS DataBase List > 1,2,3-1H-Triazole

1,2,3-1H-Triazole

Description
Product Name
1,2,3-1H-Triazole
CAS No.
288-36-8
Chemical Name
1,2,3-1H-Triazole
Synonyms
1,2,3-TRIAZOLE;1H-1,2,3-TRIAZOLE;2H-1,2,3-Triazole;Osotriazole;2H-Triazole;1h-1,2,3-Trizole;Triazacyclopentadiene;V-triazole;3-Triazole;vic-triazole
CBNumber
CB3290804
Molecular Formula
C2H3N3
Formula Weight
69.07
MOL File
288-36-8.mol
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1,2,3-1H-Triazole Property

Melting point:
23-25 °C(lit.)
Boiling point:
203 °C752 mm Hg(lit.)
Density 
1.192 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.498(lit.)
Flash point:
225 °F
storage temp. 
Sealed in dry,Room Temperature
solubility 
Acetone, Chloroform, Methanol (Slightly)
form 
Liquid
pka
1.17(at 20℃)
color 
Clear colorless to yellow
Specific Gravity
1.192
Water Solubility 
soluble
FreezingPoint 
21.0 to 24.0 ℃
BRN 
104766
InChIKey
QWENRTYMTSOGBR-UHFFFAOYSA-N
CAS DataBase Reference
288-36-8(CAS DataBase Reference)
NIST Chemistry Reference
1H-1,2,3-Triazole(288-36-8)
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Safety

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-63-36-22
Safety Statements 
37/39-26-36/37
WGK Germany 
3
Hazard Note 
Irritant
HS Code 
29339900
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
333662
Product name
1H-1,2,3-Triazole
Purity
97%
Packaging
1g
Price
$56.5
Updated
2025/07/31
Sigma-Aldrich
Product number
333662
Product name
1H-1,2,3-Triazole
Purity
97%
Packaging
5g
Price
$154
Updated
2025/07/31
TCI Chemical
Product number
T1880
Product name
1H-1,2,3-Triazole
Purity
>98.0%(T)
Packaging
5g
Price
$115
Updated
2025/07/31
TCI Chemical
Product number
T1880
Product name
1H-1,2,3-Triazole
Purity
>98.0%(T)
Packaging
25g
Price
$403
Updated
2025/07/31
TRC
Product number
T767390
Product name
1H-1,2,3-Triazole
Packaging
100g
Price
$1205
Updated
2021/12/16
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1,2,3-1H-Triazole Chemical Properties,Usage,Production

Description

1,2,3-1H-Triazole is a kind of azole compound. It can effectively promote the proton conduction in polymer electrolyte membranes via an intermolecular proton-transfer mechanism. It is also a useful triazole for proteomics research1. It also find use in research as a bioisostere in medicinal chemistry as well as an building block for more complex chemical compounds, including pharmaceutical drugs such as mubritinib and tazobactam2. It is a main class of hetero-cycles because of its extensive range of biological properties such as antimicrobial, anticancer, anti-tubercular, anti-HIV, antimalarial, antibacterial, antifungal, antiviral and anti-diabetic property3.

Chemical Properties

clear colorless liquid

Uses

A basic 5-membered aromatic heterocycle used as a building block for more complex pharmaceutical compounds. There have been recent studies that showed antitumor, antiinflammatory, analgesic, antifunga l, antibacterial and antiviral activities in bioactive triazoles.

Uses

It effectively promotes the proton conduction in polymer electrolyte membranes via an intermolecular proton-transfer mechanism. A useful triazole for proteomics research

Definition

ChEBI: 1H-1,2,3-triazole is a 1,2,3-triazole. It is a tautomer of a 2H-1,2,3-triazole and a 4H-1,2,3-triazole.

Synthesis Reference(s)

The Journal of Organic Chemistry, 62, p. 9177, 1997 DOI: 10.1021/jo971313o

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.

Synthesis

4546-95-6

288-36-8

General procedure for the synthesis of 1,2,3-triazole from 1H-1,2,3-triazole-4,5-dicarboxylic acid: to a 2000 mL four-neck flask was added 1250 mL of pure water and 157.08 g (1.0 mol) of 1H-1,2,3-triazole-4,5-dicarboxylic acid, followed by the addition of 4.71 g (equivalent to 1H-1,2,3-triazole-4,5-dicarboxylic acid 3% by mass) of N,N-diisopropylethylamine. The reaction mixture was heated to 100~110°C under atmospheric pressure and refluxed until the reaction solution was clarified. Refluxing was continued for 1 h. The reaction was monitored by HPLC and terminated when the residue of 1H-1,2,3-triazole-4,5-dicarboxylic acid was less than 1%. After completion of the reaction, filtration was performed. A vacuum pump was used to remove most of the water from the filtrate, which was then replaced with a mechanical pump for high vacuum dehydration. The four-necked flask was mounted on a distillation apparatus and vacuum distillation was carried out, resulting in 66.48 g of 1H-1,2,3-triazole with a molar yield of 96.25% and a GC purity of 99.56%.

References

[1] Patent: CN106946803, 2017, A. Location in patent: Paragraph 0035; 0040; 0041; 0045; 0046; 0050; 0051
[2] Patent: CN105330607, 2016, A. Location in patent: Paragraph 0033; 0034
[3] Chemische Berichte, 1893, vol. 26, p. 2737

1,2,3-1H-Triazole Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 1,2,3-1H-Triazole manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
1,2,3-1H-Triazole 288-36-8
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-25
Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
1,2,3-1H-Triazole 288-36-8
Price
US $50.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000kg/week
Release date
2024-05-20
Hebei Yanxi Chemical Co., Ltd.
Product
1,2,3-1H-Triazole 288-36-8
Price
US $100.00-50.00/kgkg
Min. Order
1kgkg
Purity
0.99
Supply Ability
10000
Release date
2023-09-28

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