Sigma Urethane U2500 - ≥99%Synonym: Carbamic acid ethyl ester, Ethyl carbamate, EthylurethaneCAS Number: 51-79-6Linear Formula: NH2COOC2H5Molecular Weight: 89.09Beilstein Registry Number: 635810vapor density 3.07 (vs air) vapor pressure 10 mmHg ( 77.8 °C) assay ≥99% bp 182-184 °C(lit.) mp 48-50 °C(lit.)