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HCID 89031Erstellt: 4. November 2026

1H-Tetrazol-5-essigsure

2-(1H-tetrazol-5-yl)acetic acid · Tetrazole-5-acetate · IFLAB-BB F1984-0199 · CHEMBRDG-BB 4002014 · TIMTEC-BB SBB010083 · Cefazolin Impurity 58 · TETRAZOLE-5-ACETIC ACID · 2H-Tetrazole-5-aceticacid

https://huagongshe.com/de/chemical/89031

Molekülstruktur von 1H-Tetrazol-5-essigsure

Identifikatoren & physikalische Daten

CAS No.21743-75-9
SummenformelC3H4N4O2
Durchschnittliche Molmasse128,09 g/mol
Monoisotopische Masse128,03342538 g/mol
SMILESO=C(O)Cc1nn[nH]n1
InChIKeyJUNAPQMUUHSYOV-UHFFFAOYSA-N
PubChem CID89031
ChEMBLCHEMBL6161739
EC No.244-563-2
DTXSIDDTXSID60176139
Lokaler Name1H-Tetrazol-5-essigsure

Chemische & physikalische Eigenschaften

XLogP-1
Polarare Oberfläche (TPSA)91,8
H-Brücken-Donoren2
H-Brücken-Akzeptoren5
Frei drehbare Bindungen2
Schwere Atome9
Formalladung0
Komplexität116
Schmelzpunkt180-183 °C (lit.)
Siedepunkt451.0±47.0 °C(Predicted)
Dichte1.710±0.06 g/cm3(Predicted)
LagerbedingungenInert atmosphere,Room Temperature
LöslichkeitSoluble in water
Aggregatzustandpowder to crystal
pKa (Säurekonstante)3.39±0.10(Predicted)
FarbeWhite to Almost white
InChI1S/C3H4N4O2/c8-3(9)1-2-4-6-7-5-2/h1H2,(H,8,9)(H,4,5,6,7)
InChIKeyJUNAPQMUUHSYOV-UHFFFAOYSA-N
SMILESOC(=O)Cc1nnn[nH]1
CAS Datenbank21743-75-9(CAS DataBase Reference)

Sicherheit & Vorschriften

GHS-EinstufungWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H335 (97.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 42 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)Eye Irrit. 2 (100%)STOT SE 3 (97.6%)
Wassergefährdungsklasse (WGK)3
UN-TransportnummerUN 1325 4.1/PG III
Zollcode2933.99.8290
R-Sätze (R)36/37/38
GefahrensymboleXi
Sicherheitshinweise (S)26-36
GefahrenklasseIRRITANTEye Irrit. 2Skin Irrit. 2STOT SE 3
VerpackungsgruppeIII
Lagerklasse11 - Combustible Solids

Anwendungen & Verwendung

Verwenden

1H-Tetrazole-5-acetic acid(H2tza) may be used in the preparation of:5-(trinitromethyl)-2H-tetrazoleN-(furan-2yl methyl)-2-(1H-tetrazol-5-yl)acetamidetetrazolium based ionic liquidIt may also be used as a bifunctional ligand for the synthesis of novel copper(II) and nickel(II) complexes.