โ Scribed by Hideo Ohtani; Sadashige Horiguchi; Youkichi Urano; Masaji Iwasaka; Kazuaki Tokuhashi; Shigeo Kondo
No coin nor oath required. For personal study only.
Flammability limits of arsine (ASH3) and phosphine (PHD in air and the dilution effect of nitrogen on the flammability limits were investigated experimentally. Experiments were done in a closed cylindrical vessel at atmospheric pressure. Mixtures were ignited by fusing a nichrome wire by electric current at the center of the vessel. Occurrence of explosion was determined from pressure history after ignition. Solid power deposit on the inner wall was also useful for the decision in the case of arsine test. The flammability limits were determined as follows. The flammability limit of arsine in air is 5.1-78 %. The lower flammability limit of phosphine in air is 1.6%. Although the upper flammability limit of phosphine in air could not be determined experimentally because of its autoignitability, it was considered to be close to 100%.
๐ SIMILAR VOLUMES
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