TY - CONF A1 - Rosenberg, Marika A1 - Michael-Schulz, Heike A1 - Wehrstedt, Klaus-Dieter A1 - Malow, Marcus T1 - Validation of the UN test method N.5 T2 - 15th Annual symposium, Mary Kay O'Connor process safety center CY - College Station, TX, USA DA - 2012-10-23 KW - UN test N.5 KW - Water-reactive substance KW - Flammable gas PY - 2012 SN - 978-0-615-53719-1 SP - 826 EP - 835 AN - OPUS4-26898 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rosenberg, Marika A1 - Michael-Schulz, Heike A1 - Wehrstedt, Klaus-Dieter A1 - Malow, Marcus T1 - Validation of the UN test method N.5 N2 - Many substances react with water in such a way that flammable gases are formed. For transport issues this reaction may possess a considerable hazard especially if the cargo is wetted by rain or by water from other sources. In the UN Recommendations on the Transport of Dangerous Goods these kinds of problems are addressed. The UN test N.5 'Test method for substances which in contact with water emit flammable gases' corresponds to this hazard. Classification according to the test method is done by measurement of the gas evolution rate of the flammable gas by any suitable procedure. At BAM a gravimetric approach is used to measure the gas evolution rate. In this paper we present the evaluation of the apparatus by means of an absolute calibration routine utilizing a reaction where a known amount of gas is produced as well as the evaluation of important parameters influencing the gas evolution rate using different substances. It can be shown that the apparatus is capable of measuring absolute gas volumes as low as 6 mL with an acceptable error of about 17% as determined from the reaction of Mg with demineralized water. KW - UN test N.5 KW - Water reactive substance KW - Flammable gas KW - Magnesium KW - Aluminum KW - Hydrogen PY - 2014 DO - https://doi.org/10.1016/j.jlp.2014.03.008 SN - 0950-4230 SN - 1873-3352 VL - 30 SP - 282 EP - 286 PB - Butterworth CY - Guildford, Surrey AN - OPUS4-31037 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -