In order to know accuracy of data in material safety data sheet (MSDS), the flash point of n-decanol was measured by using a Tag-closed tester, a Seta-flash-closed tester, a Pensky-Martens-closed tester and a Cleveland-open tester at the National Research Institute of Fire and Disaster (NRIFD) in Japan and the Korea Fire Equipment Inspection Corporation (KOFEIC) in Korea. The flash points measured were compared to data of the references. The flash points determined at NRIFD were similar to those of KOFEIC. However, the flash points 112 and 115 degrees C of n-decanol, measured at the NRIFD and 117 and 120 degrees C at the KOFEIC, respectively, were much different from those in MSDS and literatures. Therefore, manufacturers should be more careful when they make MSDS. (C) 2007 Elsevier Ltd. All rights reserved.