Thionyl Chloride


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thionyl chloride

[′thī·ən·əl ′klȯr‚īd]
(inorganic chemistry)
SOCl2 A toxic, yellowish to red liquid with a pungent aroma, soluble in benzene, decomposes in water and at 140°C; boils at 79°C; used as a chemical intermediate and catalyst. Also known as sulfur oxychloride; sulfurous oxychloride.

Thionyl Chloride

 

(SOCl2), a colorless liquid that fumes upon exposure to air. Thionyl chloride is prepared commercially by the direct reaction of S, O2 and Cl2 at 180°–200°C (using activated carbon as a catalyst) or by the action of excess SO2 on CCl 4in the presence of AlCl3 at 150°C and pressure of about 4 meganewtons per sq m, or 40 kilograms-force per sq cm. It is used for the preparation of sulfochlorinated polymer derivatives, and also as a chlorinating agent—for example, in the manufacture of dyes and pharmaceuticals.

Thionyl chloride is toxic; it irritates the mucous membranes, causing severe burns.

References in periodicals archive ?
Lauory lchloride is produced by mixing of fatty or lauric acid with an excess of thionyl chloride followed by separating crude fatty acid by hydrolyzing the unreacted phosphorous chloride.
Thionyl chloride (15 mL) was added to 0.01 mol corresponding acids.
Contract awarded for 29688048-lithium chloride battery 3.6volt, size 2000mah, make maxell super type er6- axel lead, dimension l=50+/- 0.3mm dia 1.4mm lead dia 0.6mm, lead length 15mm each side or lithium thionyl chloride batt
One solution may be to utilize a specially modified bobbin-type lithium thionyl chloride (LiSOCl2) battery that features extremely high-energy density, along with the ability to handle high pulses at extreme temperatures, thus eliminating the need for extra capacity and/or voltage.
Thionyl chloride, p-phenylenediamine, dimethylformamide (DMF), concentrated nitric acid, and diiodomethane were of analytical grade and obtained from Sinopharm Chemical Reagent Co., Ltd., China.
The Group's new production lines for chlorinated polyvinyl chloride, thionyl chloride and styrene-acrylic latex, which commenced operation last year, have been contributing to the Group's profitability.
The British energy firm's lithium thionyl chloride battery comes in three different variations and is used mostly for sensor applications in remote areas, said Jonathan DiGiacomandrea, company applications engineering manager.
For example, wireless devices that draw low average daily current are typically better suited for industrial grade lithium thionyl chloride ([LiSOCl.sub.2]) batteries that deliver high energy density and capacity to support product miniaturization, a low annual self-discharge rate to extend operating life, extended temperature range, and high pulses capabilities to support two-way wireless communications.
The produced MWCNT-COOH was reacted with thionyl chloride in the presence and absence of dimethylformamide (DMF) (Yu et al., 2008b).
In addition, specially modified bobbin-type LiSOCl, (lithium thionyl chloride) batteries are used to monitor the transport of frozen tissue samples, pharmaceuticals, and transplant organs throughout the medical cold chain, where temperatures as low as -80[degrees]C must be maintained.
Then, 1.2 molar equivalence of thionyl chloride (0.406 mL, 0.662 g) was diluted with anhydrous DCM in a syringe (4 mL) and added dropwise by syringe to the solution.
Cinnamic acid dissolved in refluxing thionyl chloride with catalytic DMF was the preferred route for the synthesis of acyl chlorides destined for the synthesis of the ester, while the acyl chloride synthesized from cold oxalyl chloride in C[H.sub.2][Cl.sub.2] yielded much cleaner crude reaction mixtures and higher yields in the synthesis of the cinnamyl amide.