Process for prepared perchloromethyl mercaptan by chlorination o

Details Process for prepared perchloromethyl mercaptan by chlorination o Process for prepared perchloromethyl mercaptan by chlorination o

1975-04-28

1976-07-06

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260607R, C07C14500, C07C14916

Patent

active

039681556

ABSTRACT:
Perchloromethyl mercaptan is prepared with about 10% saving in raw materials by an improved process comprising (i) chlorinating carbon disulfide in the presence of iodine to produce a first chlorinated liquor, (ii) separating said liquor by distillation into a high-boiling fraction of technical-grade perchloromethyl mercaptan and a low-boiling fraction, A, (iii) chlorinating fraction A in the presence of iodine and absence of any substantial amount of metallic halides to produce a second chlorinated liquor, (iv) separating said second liquor by distillation into a high boiling fraction of crude perchloromethyl mercaptan and a second low-boiling fraction, B, consisting essentially of sulfur dichloride, and (v) heating fraction B at about 90.degree.-150.degree.C in presence of a metallic halide to form sulfur monochloride and regenerate chlorine.

REFERENCES:
patent: 2664442 (1953-12-01), Kamlet
Chem. Review vol. 58 pp. 509-512 (1958).

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