In a chemical plant engaged for many years in the manufacture of hydrochloric acid, no cases of dermatitis had occurred, except for an occasional accidental acid burn, until nine months ago. At that time a change was made in the manufacturing process. This consisted of the addition of about 0.4 per cent of soft coal to the composition of the salt briquets, from which the acid is made, for the purpose of making them more porous and speeding the reaction. Three days after the new composition was introduced, a suction fan used in pulling the gases through the towers and pipe lines broke down and had to be taken apart to be repaired. Since the plant had to be shut down while this was going on, it was thought an opportune time to clean out one of the five towers in which the hydrochloric acid gas is absorbed with
SCHWARTZ L. AN UNUSUAL FORM OF OCCUPATIONAL DERMATITIS: REPORT OF AN OUTBREAK IN A PLANT MANUFACTURING HYDROCHLORIC ACID. Arch Derm Syphilol. 1944;50(1):25–26. doi:10.1001/archderm.1944.01510130028007
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