CAS 110-01-0 corresponds to tetrahydrothiophene (THT), which is a sulfur-containing saturated heterocyclic compound mainly used as an odorant and organic synthesis intermediate for natural gas and liquefied gas.

Core Basic Information
-Chinese name: Tetrahydrophene (alias: Thiophene, Tetramethylene Sulfur, Thiocyclopentane)
-English name: Tetrahedrophene (alias: Thiolane, Thiolane, Tetramethylene sulfide)
-Molecular formula: C ₄ H ₈ S; Molecular weight: 88.17
-Appearance: Colorless and transparent volatile liquid with a strong and stable unpleasant odor
-Key physicochemical parameters: boiling point of approximately 119-121.5 ℃, melting point of -96 ℃, density of approximately 1.0 g/cm ³ (25 ℃), flash point of approximately 13 ℃, insoluble in water, miscible with organic solvents such as ethanol and ether

Main purpose and characteristics
1. Odorant: Due to its stable odor, low threshold, and low emission, it is widely used as a warning additive for leaks in urban gas, liquefied petroleum gas, and natural gas.
2. Chemical intermediates: Used as raw materials for pharmaceuticals, pesticides, and organic synthesis solvents, they can be oxidized to prepare sulfoxides or sulfolane.
3. Chemical properties: Non aromatic, exhibiting typical sulfide properties, easily oxidized by strong oxidants; Flammable, vapors can form explosive mixtures with air.

Safety and Storage Tips
-Hazard: Flammable liquid (GHS classification flammable), harmful by inhalation or contact, toxic to aquatic organisms.
-Protection requirements: Keep away from fire/heat sources, operate in a closed environment, and equip with explosion-proof facilities; Store in a cool and ventilated place, avoid contact with oxidants.
-Emergency response: In case of leakage, the fire source should be cut off, and activated carbon adsorption or inert materials should be used to prevent it from flowing into the sewer.

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Tetrahydrothiophene CAS 110-01-0
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