Chlorosulfonic acid

High-purity HSO3Cl is prepd. at a high space-time yield by mixing and reacting gaseous HCl with SO3 dissolved in ClSO3H, contg. 0.3-1.4% SO3 at 70-100 Deg in a venturi tube at 1-1.1 mol HCl/mol SO3. Thus, into the throat of a vertical venturi tube was fed gaseous HCl at 520 L/h and a rising stream of a soln. of SO3 in HSO3Cl. The reaction mixt. at 80 Deg then passed into the bubble column above the venturi where the reaction was completed, excess HCl being discharged at the top of the column, and HSO3Cl withdrawn through a side outlet and cooled. The product was collected at an outlet at 2.9 kg/h. The remaining CSO3Cl was recycled to the venturi reactor after the addn. of 1.05 L SO3/h. [on SciFinder (R)]


Year:
1979
Publisher:
(Hoechst A.-G., Fed. Rep. Ger.).
Keywords:
Note:
CAN 90:189237
49-2
Industrial Inorganic Chemicals
Patent
written in German.
19790118
7790-94-5P Role: IMF (Industrial manufacture), PREP (Preparation) (manuf. of, app. for); 7446-11-9 Role: RCT (Reactant), RACT (Reactant or reagent) (reaction of, with hydrochloric acid, app. for); 7647-01-0P Role: RCT (Reactant), PREP (Preparation), RACT (Reactant or reagent) (reaction of, with sulfur trioxide, app. for)
Patent number(s):
Laboratories:




 Record created 2006-04-18, last modified 2018-01-27


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