Pharmaceutical Chemicals
Description
Thiophene CAS 110-02-1 for Perfume
Product Name: Thiophene;
Synonyms: CP 34;cp34;Furan, Thio-;Hopkin& acute;s lactic acid reagent;Huile H50;Huile HSO;huileh50;huilehso;
CAS: 110-02-1;
MF: C4H4S;
MW: 84.14;
EINECS: 203-729-4;
Product Categories: Thiophenes;Building Blocks;Thiophene;Organoborons;Halogenated;Organohalides;Boronic ester;Carboxy;C4 to C6;Chemical Synthesis;Heterocyclic Building Blocks;
Melting point: -38 °C;
Boiling point: 84 °C(lit.);
density: 1.051 g/mL at 25 °C(lit.);
vapor density: 2.9 (vs air);
vapor pressure: 40 mm Hg ( 12.5 °C);
Fp: -9 °C;
storage temp.: Flammables area;
HS Code: 29349990;
Description:
Thiophene is five-member heterocyclic compounds containing a sulfur atom and is presented at coal tar crude benzene at small amounts. It is a kind of colorless liquid having similar order as benzene aromatic with the boiling point being 84℃. It is insoluble in water, and can be mixed with ethanol, ethyl ether, acetone, benzene, carbon tetrachloride, heptane, pyridine, and 1,4-dioxane. It is flammable, and has a high heat resistance without being decomposed when being heated to 850℃. It is not polymerized under acidic conditions, nor does it be decomposed and be susceptible to oxidation. It also has moderate toxicity. The 5 atoms in thiophene ring belong to sp2 hybrid and located in the same plane. The occupied p-orbital of a pair of non-sharing electrons in the sulfur atom is parallel and overlapped with that of occupies the 4 carbon atoms which form 5 atoms/6 electrons closing conjugated system and thus having aromaticity. Thiophene is more prone to have electrophilic substitution reaction than benzene with electrophilic substitution mainly occurring in alpha- position (2-position or 5-position). An important derivative of thiophene is biotin which can have sulfonation reaction with concentrated sulfuric acid at room temperature with producing 2-thiophene acid which can be dissolved in sulfuric acid.
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