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HCID 75771Erstellt: 23. Oktober 2026

1-Hydroxybenzotriazol

HOBT · BENZOTRIAZOL-1-OL · HBT · HYDROXYBENZOTRIAZOLE · 1-Benzotriazolol · 1H-benzo[d][1,2,3]triazol-1-ol · N-HYDROXYBENZOTRIAZOLE · HBOT

https://huagongshe.com/de/chemical/75771

Molekülstruktur von 1-Hydroxybenzotriazol

Identifikatoren & physikalische Daten

CAS No.2592-95-2
SummenformelC6.H5.N3.O
Durchschnittliche Molmasse135,12 g/mol
Monoisotopische Masse135,04326178 g/mol
SMILESOn1nnc2ccccc21
InChIKeyASOKPJOREAFHNY-UHFFFAOYSA-N
PubChem CID75771
ChEMBLCHEMBL1389920
ChEBICHEBI:176967
EC No.219-989-7
DTXSIDDTXSID3044627
Lokaler Name1-Hydroxybenzotriazol

Chemische & physikalische Eigenschaften

XLogP1,2
Polarare Oberfläche (TPSA)50,9
H-Brücken-Donoren1
H-Brücken-Akzeptoren3
Frei drehbare Bindungen0
Schwere Atome10
Formalladung0
Komplexität130
StoffklassenNitrogen Compounds -> Triazoles
SpringerMaterials Properties15N nuclear magnetic resonance spectrum
Löslichkeit8.4 [ug/mL] (The mean of the results at pH 7.4)DMSO (Slightly), Methanol (Slightly)4.201g/L at 29℃
Physical DescriptionWhite solid[Merck Index] Light yellow fine crystals with lumps[Sigma-Aldrich MSDS]
Collision Cross Section124.9 Ų [M+H]+ [CCS Type: DTBuffer gas: N2Ionization: APCI+Dataset: TOXCASTSource Identifier: DTXSID3044627]
Schmelzpunkt156-159°C
Siedepunkt149-150 °C
Dichte1 g/cm3
Dampfdruck0.009Pa at 25℃
Brechungsindexn20/D 1.488
Flammpunkt95 °C
LagerbedingungenInert atmosphere,2-8°C
AggregatzustandSolid
pKa (Säurekonstante)7.39±0.58(Predicted)
FarbeWhite to off-white crystalline powder
StabilitätStable, but possible risk of explosion if heated under confinement. Flammable.
LogP (Verteilungskoeffizient)0.146 at 25℃
CAS Datenbank2592-95-2(CAS DataBase Reference)
NIST chemische Informationen1H-benzotriazole, 1-hydroxy-(2592-95-2)
EPA chemische Informationen1H-Benzotriazole, 1-hydroxy- (2592-95-2)

Sicherheit & Vorschriften

GHS-EinstufungDangerH203: (Deleted) Explosivefire, blast or projection hazard [Danger Explosives]P210, P230, P240, P250, P280, P370+P380, P372, P373, P401, and P501 (click each P-code to see the statement)H203 (96.8%): (Deleted) ExplosiveP210, P230, P240, P250, P264+P265, P273, P280, P305+P351+P338, P337+P317, P370+P380, P372, P373, P401, and P501 (click each P-code to see the statement)
Regulatorische InformationenStatus: Active Update: 30-11-2020 https://echa.europa.eu/registration-dossier/-/registered-dossier/192651H-Benzotriazole, 1-hydroxy-: Does not have an individual approval but may be used under an appropriate group standard
GefahrenübersichtA mild eye irritantCauses somnolence and weight loss in oral lethal-dose studies of rats[RTECS] May explode on heating[Merck Index] Explosion hazardAn eye irritant[Sigma-Aldrich MSDS] See 1-Hydroxybenzotriazole hydrate.
DOT Hazard Classification1-Hydroxybenzotriazole, anhydrous, dry or wetted with less than 20 percent water, by massUN0508Div 1.3 Explosives (with predominately a fire hazard) (49 eCFR § 173.50)1-Hydroxybenzotriazole, monohydrateUN3474Div 4.1 Flammable solid (49 eCFR § 173.124)
Hazard Classes and CategoriesExpl. 1.3 (96.8%)Explosive - division 1.3
Protective Action Criteria (PAC)20 [mg/m3]220 [mg/m3]1300 [mg/m3]
TSCA-Inventar-StatusTSCA listed
UN-TransportnummerUN 0508 (1-HYDROXYBENZOTRIAZOLE, ANHYDROUS, dry or wetted with less than 20 % water, by mass)
Zollcode29339980
RTECS-Nr.DM1288000
R-Sätze (R)11-5-36/38-36/37/38-36-20/21-61-2
Toxizitätrat,LDLo,oral,5gm/kg (5000mg/kg),Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 679, 1992.
GefahrensymboleF,Xi,T,E
Sicherheitshinweise (S)16-33-7/9-26-45-53-15-36/37-35
Gefahrenklasse1.3C

Anwendungen & Verwendung

Verwenden

1-Hydroxybenzotriazole (HOBT) is used in preparation method of carbon fiber/polyamide composite powder material for laser sintering.