The Ethene, 1,1-diethoxy-, with the CAS registry number 2678-54-8, is also known as Ketene, diethyl acetal. This chemical's molecular formula is C₆H₁₂O₂ and molecular weight is 116.16. What's more, both its IUPAC name and systematic name are the same which is called 1,1-Diethoxyethene. When you are dealing with this chemical, you should be very careful. This chemical is flammable. Therefore, you can not breathe the gas/fumes/vapour/spray. 

Physical properties about Ethene, 1,1-diethoxy- are: (1)ACD/LogP: 1.195; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.20; (4)ACD/LogD (pH 7.4): 1.20; (5)ACD/BCF (pH 5.5): 4.77; (6)ACD/BCF (pH 7.4): 4.77; (7)ACD/KOC (pH 5.5): 106.42; (8)ACD/KOC (pH 7.4): 106.42; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 18.46 Å²; (13)Index of Refraction: 1.402; (14)Molar Refractivity: 32.905 cm³; (15)Molar Volume: 135.196 cm³; (16)Polarizability: 13.044×10^-24cm³; (17)Surface Tension: 22.788 dyne/cm; (18)Density: 0.859 g/cm³; (19)Flash Point: 7.004 °C; (20)Enthalpy of Vaporization: 33.033 kJ/mol; (21)Boiling Point: 105.645 °C at 760 mmHg; (22)Vapour Pressure: 34.079 mmHg at 25 °C.

Preparation of Ethene, 1,1-diethoxy-: this chemical can be prepared by 2-bromo-1,1-diethoxy-ethane. This reaction needs reagent t-BuOK at temperature of 120-130 °C.

Uses of Ethene, 1,1-diethoxy-: it is used to produce other chemicals. For example, it can react with acrylic acid methyl ester to get 2.2-Diethoxy-cyclobutancarbonsaeuremethylester. The reaction occurs with solvent acetonitrile and other condition of heating for 8 days. The yield is 17 %.

You can still convert the following datas into molecular structure:
(1) SMILES: CCOC(=C)OCC
(2) InChI: InChI=1S/C6H12O2/c1-4-7-6(3)8-5-2/h3-5H2,1-2H3
(3) InChIKey: VTGIVYVOVVQLRL-UHFFFAOYSA-N