Acute and subacute inhalation toxicity of highly purified phosphine (PH3) in male ICR mice

Kazuyuki Omae, Chizuru Ishizuka, Hiroshi Nakashima, Haruhiko Sakurai, Kazuto Yamazaki, Koji Mori, Toshikatsu Shibata, Hirokazu Kanoh, Mitsuhiro Kudo, Masatomo Tati

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6 Citations (Scopus)


The acute and subacute inhalation toxicity of highly purified phosphine (PH3, CAS No. 7803-51-2, 99.995%) in male ICR mice was investigated. LC50 for one-hour exposure was greater than 59.2 ppm and that for four-hour exposure was between 26.5 ppm and 33.4 ppm. Experiments involving acute exposure to 25 ppm PH3 for one, two, four or eight hours, and subacute exposure to 5 ppm PH3 for six hours/day, five days/week, for two or four weeks were conducted. All mice subjected to acute eight-hour exposure died but a histopathological examination failed to reveal the actual causes of death. In the nasal cavity, exposure-time related inflammatory changes were observed in the acute two-, four-, and eight-hour exposure groups, and in the subacute four-week exposure group. Other histopathological, hematological, and serum biochemical examinations did not reveal PH3-related changes. Further study is necessary to assess the actual effects of PH3 on the cause of death.

Original languageEnglish
Pages (from-to)36-42
Number of pages7
JournalJournal of occupational health
Issue number1
Publication statusPublished - 1996 Jan
Externally publishedYes


  • Inhalation toxicity
  • LC
  • Mouse
  • Phosphine
  • Respiratory effect
  • Semiconductor

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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