The Tetrahydrothiophene, with the CAS registry number 110-01-0 and EINECS registry number 203-728-9, is also known as Thiophane. And the molecular formula of this chemical is C₄H₈S. It is the saturated analog of thiophene. Besides, it is a volatile, clear, colorless liquid with a strong unpleasant odor,and stability Highly flammable,vapour-air mixtures explosive in some proportions; note low flash point and fairly wide explosion limit range. Heavier than air, so potentially explosive mixtures may travel considerable distances to source of ignition .It is used as a solvent and to make other chemicals.

The physical properties of Tetrahydrothiophene are as following:
 (1)ACD/LogP: 1.34; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.34; (4)ACD/LogD (pH 7.4): 1.34; (5)ACD/BCF (pH 5.5): 6.1; (6)ACD/BCF (pH 7.4): 6.1; (7)ACD/KOC (pH 5.5): 127.03; (8)ACD/KOC (pH 7.4): 127.03; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 25.3 Å²; (13)Index of Refraction: 1.515; (14)Molar Refractivity: 26.6 cm³; (15)Molar Volume: 88.1 cm³; (16)Polarizability: 10.54×10^-24cm³; (17)Surface Tension: 35.7 dyne/cm; (18)Density: 0.999 g/cm³; (19)Flash Point: 12.8 °C; (20)Enthalpy of Vaporization: 34.66 kJ/mol; (21)Boiling Point: 121.5 °C at 760 mmHg; (22)Vapour Pressure: 17.5 mmHg at 25°C.

Preparation and uses of Tetrahydrothiophene:
It can be prepared by 1,4-dibromobutane and sodium sulfide in the solvent alcohol. It is occasionally used as an odorant in natural gas because of its smell. It is also used as a solvent, as an insecticide, and as a moth repellant. It is an intermediate in the preparation of the solvent sulfolane, which is produced by the oxidation of tetrahydrothiophene. In addition, it is also used as an electrolyte for lithium batteries.

Safety information of Tetrahydrothiophene:
You should be cautious while dealing with this chemical. It is a kind of highly flammable chemical which irritates eyes and skin. It is also harmful by inhalation, in contact with skin and if swallowed. Besides, it is harmful to aquatic organisms, and may cause long-term adverse effects in the aquatic environment. Therefore, you had better take the following instructions: Wear suitable protective clothing and gloves; Keep away from food, drink and animal feeding stuffs; Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer); Avoid release to the environment. Refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: S1CCCC1
(2)InChI: InChI=1/C4H8S/c1-2-4-5-3-1/h1-4H2
(3)InChIKey: RAOIDOHSFRTOEL-UHFFFAOYAY

The toxicity data of Tetrahydrothiophene is as follows: