物質的閃火點已成為國內外物質安全資料表的重要安全資訊之一，但物質安全資料表所提供的資訊只適用於純物質或特定濃度的溶液，對於混合溶液在不同比例組成下的閃火點資料實在是乏善可陳，而一些具有特別性質閃火點行為的溶液資料則更是缺乏。而本研究證明最高閃火點溶液的存在，證明某些雙成分混合溶液具有最高閃火點行為。而具有最高閃火點性質的溶液可利用在火災爆炸危害的消減上。 此外本研究並提出一判斷雙成份混合溶液是否具有最高閃火點行為之條件和求解最高閃火點和最高閃火點組成的方程式。本研究以先前所提出的雙成分溶液閃火點預測模式為基礎，推導出閃火點對組成的微分方程式，再代入而推導出上述之條件和方程式；並以實驗數據做驗證。結果顯示此判斷條件可有效的判斷溶液是否為最高閃火點溶液，而所提之方程式成功的估算出最高閃火點溶液組成和最高閃火點。 實驗的部分，儀器為德國 Walter Herzog GmbH 公司所製造的 HFP 362-Tag 閃火點測試儀，標準測試方法為美國材料與測試協會的 ASTM D56 測試方法。; The flash-point specification is one of the major safety data items specified in the typical material safety data sheet, but even those listed in a variety of MSDS sheet are, typically, only valid for a pure and specific compound composition. The existence of maximum flash-point solution was demonstrated in this study. The behavior of such a solution has the potential to be applied in hazard reduction. The sufficient condition for a binary mixture to form a maximum flash-point solution and the equations to determine the maximum flash-point composition and maximum flash-point are proposed here. The derivative of flash point with respect to composition derived previously, which was based upon the flash point-prediction model proposed in a previous study, was applied to derive both the sufficient conditions and equations referred to above. Such a condition and equations both were verified by comparison of predicted results with experimentally derived data. The results reveal that this derived condition is satisfactory for the identification of the status of a liquid solution as being a maximum flash-point solution and the proposed equations satisfactory to successfully estimate the value of the maximum flash-point composition and the maximum flash point. The Flash Point Analyzer, HFP 362-Tag, manufactured by Walter Herzog GmbH (Germany) was used to measure the flash point of liquid solutions associated with different composition as tests. The Flash Point Analyzer is operated according to the standard test method, ASTM D56.
