RT Journal T1 FUmigation with hydrogen cyanide JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1939 FD April 22 VO 112 IS 16 SP 1594 OP 1595 DO 10.1001/jama.1939.02800160058015 UL http://dx.doi.org/10.1001/jama.1939.02800160058015 AB Evidence of the superior efficacy of hydrogen cyanide as a fumigant for ships and houses has been rapidly accumulating. As this method becomes applied more extensively, the problems of toxicity and ventilation following use have received special study. After the employment of hydrocyanic acid gas as a fumigant for ships in the tropics, with the technic which has been developed, Gilles1 states that the average time for clearance of the gas after fumigation has never exceeded six hours. At the expiration of four hours' continued ventilation, the holds and spaces are carefully tested with methyl orange or copper benzidine acetate test paper. When the fumigated space is found clear of dangerous quantities of gas, the crew is allowed on board and, under supervision, all pillows, blankets, mattresses and the like are brought out, hung and aired in the sun. Gilles does not report any toxic effects to the crew