A study for the dangerous properties measurment of dust explosion was attended by the various dust concentration on Anthraquinone, Sodiumbenzoic acid, Corn starch, soy sauce powder, and cheese powder. As the result, maximum explosion pressure, the maximum rate of pressure rise, autoigntion temperature, and the water content of dust on lower limit explosion concentration was obtained as follows 1. The lower limit explosion concentration on soy sauce powder with the humidity of 65 to 90% increased by increasing the con tent of moisture, and the effect of dry air and moisture air decreased better in make of dry air. 2. The effect of a various dust concentration on autoigntion temperatures is investigated, If the vessel of dust explosion is small size and the easiness of autoignition was controled by air within the vessel, because it was better decreased air with increasing of dust concentration 3. The maximum explosion pressures of Anthraguinone, sodiumbenzoic acid, com starch, soy sauce powder, and cheese powder were 1.0g/l, 1.0g/l, 1.5g/l, 1.5g/l, and 1.5g/l, respectively, and the maximum rate of pressure rise were 0.5g/l, 0.5g/l, 1.0g/l, 1.0g/l, and 1.0g/l, respectively.

Abstract
 I. 서론
 II. 실험장지 및 방법
 III.  실험결과 및 고찰
  1. 폭발하한계농도
  2. 발화온도
  3. 최대폭발압력 및 최대폭발 승압속도
 IV. 결론
 참고문헌

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