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HCID 16239Erstellt: 25. Oktober 2026

But-3-in-2-ol

but-3-yn-2-ol · Butynol · 1-Ethynylethanol · 3-butyn-2-0l · 3-Bytyn-2-ol · 3-Butyn-2-ol · 3-Butyne-2-Ol98% · 3-Butyn-2-ol,97%

https://huagongshe.com/de/chemical/16239

Molekülstruktur von But-3-in-2-ol

Identifikatoren & physikalische Daten

CAS No.2028-63-9
SummenformelC4H6O
Durchschnittliche Molmasse70,09 g/mol
Monoisotopische Masse70,04186481 g/mol
SMILESC#CC(C)O
InChIKeyGKPOMITUDGXOSB-UHFFFAOYSA-N
PubChem CID16239
EC No.217-978-1
DTXSIDDTXSID3022297
Lokaler NameBut-3-in-2-ol

Chemische & physikalische Eigenschaften

XLogP0,1
Polarare Oberfläche (TPSA)20,2
H-Brücken-Donoren1
H-Brücken-Akzeptoren1
Frei drehbare Bindungen0
Schwere Atome5
Formalladung0
Komplexität57,3
PolymersOther Classes -> Alcohols and Polyols, Other
Physical DescriptionColorless or light yellow liquid[Alfa Aesar MSDS]
Schmelzpunkt-1.5°C
Siedepunkt66-67 °C/150 mmHg (lit.)
Dichte0.894 g/mL at 25 °C (lit.)
Dampfdruck11hPa at 20℃
Brechungsindexn20/D 1.426(lit.)
Flammpunkt78 °F
LagerbedingungenFlammables area
LöslichkeitCompletely miscible in water
pKa (Säurekonstante)13.28±0.20(Predicted)
AggregatzustandLiquid
Wichte0.894
FarbeClear colorless to light yellow
BRN635722
InChI1S/C4H6O/c1-3-4(2)5/h1,4-5H,2H3
InChIKeyGKPOMITUDGXOSB-UHFFFAOYSA-N
SMILESCC(O)C#C
LogP (Verteilungskoeffizient)1.1 at 35℃
CAS Datenbank2028-63-9(CAS DataBase Reference)
NIST chemische Informationen3-Butyn-2-ol(2028-63-9)
EPA chemische Informationen3-Butyn-2-ol (2028-63-9)

Sicherheit & Vorschriften

GHS-EinstufungDangerH225 (68.8%): Highly Flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P260, P262, P264, P264+P265, P270, P271, P273, P280, P284, P301+P316, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P320, P321, P330, P332+P317, P337+P317, P361+P364, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 157 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatorische InformationenChemical: 3-Butyn-2-olStatus: Active Update: 04-05-2017 https://echa.europa.eu/registration-dossier/-/registered-dossier/195613-Butyn-2-ol: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
GefahrenübersichtA skin and strong eye irritantHighly toxic by ingestion and skin absorptionDermal LD50 (rabbit) < 200 mg/kg[Alfa Aesar MSDS]
Hazard Classes and CategoriesFlam. Liq. 2 (68.8%)
F10
Wassergefährdungsklasse (WGK)3
TSCA-Inventar-StatusTSCA listed
UN-TransportnummerUN 2929 6.1/PG 2
Zollcode29052900
RTECS-Nr.ES0709800
R-Sätze (R)10-25-36/38-36/37/38-24/25
GefahrensymboleT,F
hazard_noteIrritant
Sicherheitshinweise (S)26-45-36/37/39-16
Gefahrenklasse6.1Acute Tox. 2 DermalAcute Tox. 2 InhalationAcute Tox. 2 OralAquatic Chronic 3Eye Dam. 1Flam. Liq. 2Self-react. GSkin Irrit. 2
VerpackungsgruppeII
Lagerklasse3 - Flammable liquids
3-Butyn-2-ol|Huagongshe