TY - JOUR A1 - Portius, P. A1 - Filippou, A.C. A1 - Schnakenburg, G. A1 - Davis, M. A1 - Wehrstedt, Klaus-Dieter T1 - Taming the silicon tetraazide beast N2 - Highly energetic silicon tetraazide 1 is synthesized safely in high yield and high purity. The compound is prepared as a solution in benzene which allows it to be handled safely. Stable Lewis base adducts of Si(N3)4 (e.g. 2) are also prepared by treatment of either Si(N3)4 or the di­sodium salt of hexaazidosilicate (3) with Lewis bases (2,2-bipyridine or 1,10-phenanthroline). Unlike Si(N3)4 the Lewis base adduct 2 is thermally stable and does not decompose below 265 °C. The decomposition is very energetic (ΔHd = -2.4 kJg-1) which means 2 and related Lewis base ­adducts could replace environmentally harmful Pb(N3)4 used as primary explosive. KW - Highly energetic silicon tetraazide KW - Lewis base adducts KW - Azides KW - Silicon KW - Energetic materials PY - 2011 DO - https://doi.org/10.1055/s-0030-1259150 SN - 1861-1958 VL - 1 SP - 0043 EP - 0043 PB - Thieme CY - Stuttgart AN - OPUS4-32352 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Antoni, S. A1 - Clemens, J. A1 - Kunath, K. A1 - Rabe, J. A1 - Simon, K. A1 - Uhlig, S. A1 - Wehrstedt, Klaus-Dieter T1 - Evaluation of the 3rd round robin on solid oxidizer test (UN O.1) with calcium peroxide, sodium nitrate, sodium perborate monohydrate N2 - The classification of solid oxidizers according to the regulations on the transport of dangerous goods (based on the UN Recommendations/Model Regulations and accepted by all international organisations for the transport of dangerous goods as ADR, IMO, IATA) and in future also according to the GHS (Globally Harmonized System of Classification and Labelling of Chemicals) is performed on the basis of the results of the UN test O.1 (UN test O.1 ―Test for oxidizing solids‖ described in chapter 34.4.1 in the Recommendations on the Transport of Dangerous Goods – Manual of Tests and Criteria, see [1]). This test was introduced into the UN Manual of Tests and Criteria in 1995 as a replacement for a similar test from 1986. Even if the UN O.1 test as described in the current 5th revised edition of UN Manual of Tests and Criteria gives some improvements compared to the old test, which had had many deficiencies, there are still some problems left with this test in terms of e.g. repeatability or reproducibility of test results, how to handle compacted or multilayer formulations like tablets, toxicity and partly significantly varying particle size distribution within defined fractions of 150 μm to 300 μm of the reference oxidizer potassium bromate (KBrO3). For this reason the IGUS EOS working group installed an ad-hoc working group in 2002 assigned with the task to propose solutions for the existing problems. The appropriateness of such proposed solutions has to be proved by the method of interlaboratory (round robin) tests before they are presented for the adoption to the UN Committee of Experts on the TDG and on the GHS with a proposal of a completely revised test procedure. KW - Round robin KW - Solid oxidizer test KW - United Nations KW - IGUS KW - EOS KW - Calcium peroxide KW - Sodium nitrate KW - Sodium perborate monohydrate PY - 2011 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-232246 SN - 978-3-9813853-7-3 IS - Final Report, 2009 - 2011 SP - 1 EP - 192 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-23224 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wehrstedt, Klaus-Dieter A1 - Malow, Marcus T1 - Letter to the Editor - Comments on the "Letter to the editor" by M.-L. You and C.-M. Shu (Journal of Thermal Analysis and Calorimetry, 2010;100:367-369) as response to the "Letter to the editor" by M. Malow and K.-D. Wehrstedt (Journal of Thermal Analysis and Calorimetry, 2009;98:885-886) KW - Dilauroyl peroxide KW - Oxygen balance KW - DSC KW - Simulation KW - SADT PY - 2011 DO - https://doi.org/10.1007/s10973-010-1122-0 SN - 1388-6150 SN - 1418-2874 SN - 0368-4466 SN - 1572-8943 VL - 103 IS - 1 SP - 409 EP - 410 PB - Kluwer Academic Publ. CY - Dordrecht AN - OPUS4-23210 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter T1 - Identifizierung gefährlich exotherm zersetzlicher Stoffe T2 - DECHEMA-Weiterbildungskurs "Sicherheit chemischer Reaktionen", BAM CY - Berlin, Germany DA - 2011-03-28 PY - 2011 AN - OPUS4-23461 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter T1 - Anwendung von Screening-Verfahren und Prüfmethoden zur Charakterisierung gefährlich exotherm zersetzlicher Stoffe T2 - 19. Ulm-Freiberger Kalorimetrietage CY - Freiberg, Germany DA - 2011-03-16 PY - 2011 AN - OPUS4-23375 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schälike, Stefan A1 - Vela-Wallenschus, Iris A1 - Wehrstedt, Klaus-Dieter A1 - Schönbucher, A. T1 - Vorhersage der thermischen Strahlung von KW-Poolfeuern mit CFD-Simulation T2 - Workshop Brandschutzforschung CY - Magdeburg, Deutschland DA - 2010-10-04 KW - Pool fire KW - Organic peroxides KW - TBPB KW - TBPEH KW - CFD KW - Safety distances PY - 2011 UR - http://www.vfdb.de/download/MagdeburgWorkshop2010/Schaelike_vfdb2010.pdf N1 - Geburtsname von Vela-Wallenschus, Iris: Vela, I. - Birth name of Vela-Wallenschus, Iris: Vela, I. SP - 1 EP - 25 AN - OPUS4-23352 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter A1 - Michael-Schulz, Heike T1 - Classification of 5-Aminotetrazole and its hydrate T2 - IGUS Energetic and Oxidizierung Substances (EOS) Working Group Meeting CY - Washington, D.C., USA DA - 2011-04-27 PY - 2011 AN - OPUS4-23571 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter A1 - Mishra, Kirti Bhushan T1 - Safety considerations for organic peroxide fires T2 - IGUS Energetic and Oxidizierung Substances (EOS) Working Group Meeting CY - Washington, D.C., USA DA - 2011-04-27 PY - 2011 AN - OPUS4-23572 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter T1 - Self-reactive Substances Type G - Candidates for Division 4.2 T2 - IGUS Energetic and Oxidising Substances (EOS) Working Groupe Meeting CY - Washington, D.C., USA DA - 2011-04-27 PY - 2011 AN - OPUS4-23578 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter T1 - Burning tests on liquid and solid organic peroxides - organic peroxide storage regulations, Part 2: Germany/Europe T2 - IGUS Energetic and Oxidising Substances (EOS) Working Group Meeting CY - Washington, D.C., USA DA - 2011-04-27 PY - 2011 AN - OPUS4-23579 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -