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2,2-Dimethylbutane

Names Preferred IUPAC name2,2-DimethylbutaneOther names Neohexane, 22DMBIdentifiers CAS Number75-83-23D model (JSmol)Interactive imageBeilstein Reference1730736 ChEMBLChEMBL142735ChemSpider6163ECHA InfoCard100.000.825EC Number200-906-8PubChemCID6403RTECS numberEJ9300000UNII07L56L3MP2UN number1208 CompTox Dashboard(EPA)DTXSID4025111InChIInChI=1S/C6H14/c1-5-6(2,3)4/h5H2,1-4H3Key: HNRMPXKDFBEGFZ-UHFFFAOYSA-NSMILESCCC(C)(C)CProperties Chemical formulaC6H14Molar mass86.178 g·mol Appearance Colorless liquid OdorOdorless Density649 g/L Melting point−102 to −98 °C; −152 to −145 °F; 171 to 175 K Boiling point49.7 to 49.9 °C; 121.4 to 121.7 °F; 322.8 to 323.0 K log P3.51 Vapor pressure36.88 kPa (at 20 °C) Henry's lawconstant (kH)6.5 nmol Pa kg Magnetic susceptibility (χ)−76.24·10 cm/mol Refractive index (nD)1.3688 Thermochemistry Heat capacity(C)189.67 J K mol Std molarentropy(S298)272.00 J K mol Std enthalpy offormation(ΔfH298)−214.4 – −212.4 kJ mol Std enthalpy ofcombustion(ΔcH298)−4.1494 – −4.1476 MJ mol Hazards GHS labelling: PictogramsSignal wordDangerHazard statementsH225, H304, H315, H336, H411Precautionary statementsP210, P233, P240, P241, P242, P243, P261, P264, P271, P273, P280, P301+P316, P302+P352, P303+P361+P353, P304+P340, P319, P321, P331, P332+P317, P362+P364, P370+P378, P391, P403+P233, P403+P235, P405, P501NFPA 704 (fire diamond) 230Flash point−48 °C (−54 °F; 225 K) closed cup Autoignitiontemperature405 °C (761 °F; 678 K) Explosive limits1.2–7.7% NIOSH (US health exposure limits): PEL (Permissible)none Related compounds Related alkanesNeopentane2,3-DimethylbutaneTriptaneTetramethylbutaneTetraethylmethane2,2,4-Trimethylpentane2,3,3-Trimethylpentane2,3,4-TrimethylpentaneTetra-tert-butylmethaneExcept where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Yverify ( ?)

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