Use of calcium chloride to minimize hydrofluoric acid corrosion

Details Use of calcium chloride to minimize hydrofluoric acid corrosion Use of calcium chloride to minimize hydrofluoric acid corrosion

1981-07-17

1983-08-30

Gluck, Irwin

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

106 1421, 252387, 252389R, 252 793, 422 7, 422 12, C23F 1118

Patent

active

044016239

ABSTRACT:
There is provided a method for preventing corrosion in a glass-lined vessel due to HF liberated from an organic liquid medium. The method involves adding CaCl.sub.2 particles to this medium. This method is particularly useful in the chlorination of 4-chlorobenzotrifluoride to 3,4-dichlorobenzotrifluoride.

REFERENCES:
patent: 3932130 (1976-01-01), Bennett et al.
patent: 3992313 (1976-11-01), Anderson et al.
patent: 4138355 (1979-02-01), Ferstandig
patent: 4293376 (1981-10-01), Weingand
Hudlicky, M.: "Chemistry of Organic Fluorine Compounds", 2nd Edition, John Wiley & Sons, N.Y., 1976, pp. 255-278.

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