1H-1,2,3-Triazole-4-carboxylic acid

Modify Date: 2025-08-22 06:06:07

1H-1,2,3-Triazole-4-carboxylic acid Structure
1H-1,2,3-Triazole-4-carboxylic acid structure
Common Name 1H-1,2,3-Triazole-4-carboxylic acid
CAS Number 16681-70-2 Molecular Weight 113.075
Density 1.7±0.1 g/cm3 Boiling Point 446.2±18.0 °C at 760 mmHg
Molecular Formula C3H3N3O2 Melting Point N/A
MSDS N/A Flash Point 223.7±21.2 °C

 Names

Name 1H-1,2,3-Triazole-4-carboxylic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.7±0.1 g/cm3
Boiling Point 446.2±18.0 °C at 760 mmHg
Molecular Formula C3H3N3O2
Molecular Weight 113.075
Flash Point 223.7±21.2 °C
Exact Mass 113.022530
PSA 78.87000
LogP -0.09
Vapour Pressure 0.0±1.1 mmHg at 25°C
Index of Refraction 1.632

 Safety Information

Hazard Codes Xi: Irritant;
HS Code 2933990090

 Synthetic Route

~77%

1H-1,2,3-Triazole-4-carboxylic acid Structure

1H-1,2,3-Triazo...

CAS#:16681-70-2

Literature: Nemeryuk, Michal P.; Sedov, Andrej L.; Safonova, Tamara S.; Cerny, Antonin; Krepelka, Jiri Collection of Czechoslovak Chemical Communications, 1986 , vol. 51, # 1 p. 215 - 233

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1H-1,2,3-Triazole-4-carboxylic acid Structure

1H-1,2,3-Triazo...

CAS#:16681-70-2

Literature: Journal of the American Chemical Society, , vol. 76, p. 4931

~97%

1H-1,2,3-Triazole-4-carboxylic acid Structure

1H-1,2,3-Triazo...

CAS#:16681-70-2

Literature: Sibgatulin, Dmytriy A.; Bezdudny, Andrii V.; Mykhailiuk, Pavel K.; Voievoda, Nataliia M.; Kondratov, Ivan S.; Volochnyuk, Dmitry M.; Tolmachev, Andrey A. Synthesis, 2010 , # 7 art. no. Z25709SS, p. 1075 - 1077

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1H-1,2,3-Triazole-4-carboxylic acid Structure

1H-1,2,3-Triazo...

CAS#:16681-70-2

Literature: Justus Liebigs Annalen der Chemie, , vol. 593, p. 207,21

~%

1H-1,2,3-Triazole-4-carboxylic acid Structure

1H-1,2,3-Triazo...

CAS#:16681-70-2

Literature: Atti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali, Rendiconti, , vol. <5>19 I, p. 568 Gazzetta Chimica Italiana, , vol. 40 II, p. 441

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

3H-[1,2,3]Triazole-4-carboxylic acid
1H-1,2,3-triazole-5-carboxylic acid
1H-1,2,3-Triazole-4-carboxylic acid
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