Measurement and Prediction of the Lower flash Point for n-Propanol+n-Decane System Using the Tag Open-Cup Apparatus

Tag 개방식 장치를 이용한 n-Propanol+n-Decane 계의 하부인화점 측정 및 예측

  • Published : 2005.06.01


The lower flash points for the n-propanol+n-decane flammable mixture were measured by the Tag open-cup apparatus(ASTM D 1310). The experimental results of mixture exhibited the lower flash point than those of pure component in the flash point versus composition curve. The experimental value of the minimum flash point is $27^{\circ}C$ at a mole fraction of n-propanol of 0.71, and the flash point of n-propanol was $28^{\circ}C$. The experimentally obtained data were compared with the values that had been calculated by use of the prediction model, which assumes an ideal solution, and the flash point prediction models based on the van Laar equation were used to estimate the activity coefficients. The predictive curve based on an ideal solution deviated from the experimental data for this system. The experimental results demonstrate a close agreement with the predicted curves, which used the van Laar equation. The average absolute deviation(A.A.D.) from using the van Lau equation is $0.83^{\circ}C$. The methodology proposed here in this paper can thus be applied to incorporate an inherently safer design for chemical processes, such as determining safe storage and handling conditions for flammable solutions.


flash points;flammable mixture;Tag open-cup apparatus;ideal solution model;van Laar equation


  1. J. G. Walsham, 'Prediction of flash points for solvent mixture' Advan. Chem. Ser. Publ. 73, Ser. 124, American Chemical Society, Washington, DC, pp. 56-69, 1973
  2. H. Le Chatelier, 'Estimation of Fire Damp by Flammability limits' Ann. Mines, Vol. 19, No. 8, pp. 388-392, 1891
  3. E. Meyer, 'Chemistry of Hazardous Materials', 2nd ed., Prentice- Hall, 1990
  4. D. M. Ha, S. J. Lee and Y. H. Song, 'Measurement of Fire Point and Flash Point for Alcohols using Tag Open-Cup Apparatus' J. of the Korean Society of Safety, Vol. 19, No. 4, pp. 69-73, 2004
  5. D. M. Ha, Y. S. Mok and J. W. Choi, 'Flash Points of a Flammable Liquid Mixture of Binary System' HWAHAK KONGHAK, Vol. 37, No. 2, pp. 146-150, 1997
  6. D. M. Ha and S. J. Lee, 'Prediction of the Net Heats of Combustion of Organic Halogenated Compounds based on the Atomic Contribution Method', T. of Korea Institute of Fire Sci. & Eng., Vol. 17, No. 4, pp.7-13, 2003
  7. D. White, C. L. Beyler, C. Fulper and J. Leonard, 'Flame Spread on Aviation Fuels' Fire Safety Journal, Vol. 38, pp. 1-31, 1997
  8. D. M. Ha and S. K. Lee, 'A Study on Flash Points of a Flammable Substances - Focused on Prediction of Flash Points in Ternary System by Solution Theory-' T. of Korea Institute of Fire Sci. & Eng., Vol. 15, No. 3, pp. 14-20, 2001
  9. D. M. Ha, Y. C. Choi and S. J. Lee, 'The Flash Points of Water+n-propanol System Using Closed Cup Measurement Apparatus' J. of Korean Institute for Industrial Safety, Vol. 17, No. 4, pp. 140-145, 2002
  10. W. A. Affens and G. W. McLaren, 'Flammability Properties of Hydrocarbon Solutions in Air', J. Chem. Eng. Data, Vol. 17, pp. 482-488, 1972
  11. C. R. Reid, J. M. Prausnitz and B. E. Poling, 'The Properties of Gases and Liquids' 4nd ed., McGraw- Hill, New York, 1998
  12. J. Gmehing, U. Onken and W. Arlt, 'Vapor-Liquid Equilibrium Data Collection' Vol. 1, Part 1-Part 7, DECHEMA, 1980
  13. S. J. Lee and D. M. Ha, 'The Lower Flash Points for Binary Systems Containing Non-flammable Component' Korea J. Chem. Eng., Vol. 20, No. 5, pp. 799-802, 2003
  14. ASTM, 'Standard Test Method for Flash-Point and Fire point of Liquids Tag Open-cup Apparatus (ASTM D 1310-86)' American Society for Testing Materials, Philadelpia, PA, 1990