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N-butanol

Names Preferred IUPAC nameButan-1-olOther names n-Butanoln-Butyl alcoholn-Butyl hydroxiden-Propylcarbinoln-Propylmethanol1-HydroxybutaneMethylolpropaneIdentifiers CAS Number71-36-33D model (JSmol)Interactive imageAbbreviations BuOHn-BuOHnBuOHBuOH Beilstein Reference969148 ChEBICHEBI:28885ChEMBLChEMBL14245ChemSpider258DrugBankDB02145ECHA InfoCard100.000.683EC Number200-751-6Gmelin Reference25753 KEGGD03200MeSH1-ButanolPubChemCID263RTECS numberEO1400000UNII8PJ61P6TS3UN number1120 CompTox Dashboard(EPA)DTXSID1021740InChIInChI=1S/C4H10O/c1-2-3-4-5/h5H,2-4H2,1H3Key: LRHPLDYGYMQRHN-UHFFFAOYSA-NInChI=1/C4H10O/c1-2-3-4-5/h5H,2-4H2,1H3SMILESOCCCCProperties Chemical formulaC4H10OMolar mass74.123 g·mol Appearance Colourless, refractive liquid Odorbanana-like, harsh, alcoholic and sweet Density0.81 g/cm Melting point−89.8 °C (−129.6 °F; 183.3 K) Boiling point117.7 °C (243.9 °F; 390.8 K) Solubility in water73 g/L at 25 °C Solubilityvery soluble in acetone miscible with ethanol, ethyl etherlog P0.839 Vapor pressure0.58 kPa (20 °C) ILO International Chemical Safety Cards (ICSC) Acidity (pKa) 16.10 Magnetic susceptibility (χ)−56.536·10 cm/mol Refractive index (nD)1.3993 (20 °C) Viscosity2.573 mPa·s (at 25 °C) Dipole moment1.66 D Thermochemistry Std molarentropy(S298)225.7 J/(K·mol) Std enthalpy offormation(ΔfH298)−328(4) kJ/mol Std enthalpy ofcombustion(ΔcH298)−2670(20) kJ/mol Hazards GHS labelling: PictogramsHazard statementsH226, H302, H315, H318, H335, H336Precautionary statementsP210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P354+P338, P317, P319, P321, P330, P332+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, P501NFPA 704 (fire diamond) 130Flash point35 °C (95 °F; 308 K) Autoignitiontemperature343 °C (649 °F; 616 K) Explosive limits1.45–11.25% Lethal dose or concentration (LD, LC): LD50 (median dose)790 mg/kg (rat, oral) LDLo (lowest published)3484 mg/kg (rabbit, oral)790 mg/kg (rat, oral)1700 mg/kg (dog, oral) LC50 (median concentration)9221 ppm (mammal)8000 ppm (rat, 4 h) NIOSH (US health exposure limits): PEL (Permissible)TWA 100 ppm (300 mg/m) REL (Recommended)C 50 ppm (150 mg/m) [skin] IDLH (Immediate danger)1400 ppm Safety data sheet (SDS) ICSC 0111Related compounds Related compoundsButanethioln-ButylamineDiethyl etherPentaneExcept where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Nverify ( ?)

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