Evaluation of the 3rd Round Robin on Solid Oxidizer Test (UN O.1) with
Calcium peroxide, Sodium nitrate, Sodium perborate monohydrate. Final Report,
2009-2011
Final Report (PDF, 2011)
Antoni, S.1, Clemens, J.3, Kunath, K.1,
Rabe, J.3, Simon, K.1, Uhlig, S.1, Wehrstedt,
K.-D.2
BAM, Berlin, ISBN 978-3-9813853-7-3
Classification of solid oxidizers is performed according to the regulations on the transport of dangerous goods and according to the GHS, the Globally Harmonized System of Classification and Labelling of Chemicals. Test results of the UN test for oxidizing solids form the basis for classification. Certain problems have occured with this test, e.g. in terms of repeatability or reproducibility of test results, and the toxicity of the reference oxidizer potassium bromate. Hence, the IGUS EOS working group installed an ad-hoc working group assigned with the task to propose solutions for the existing problems. The suitability of the proposed solutions was proven by an interlaboratory comparison with 12 participating laboratories from industries and competent authorities. The results and recommendations of this comparison were published in a final report.
1quo data GmbH, 2BAM, 3Solvay Chemicals GmbH
Magnetic domains in a FeSi crystal (graphic: © Helmholz Zentrum
Berlin/Manke, Grothausmann)
Enlarge picture
For the very first time, three-dimensional (3D) imaging of magnetic material structures is now possible. Detailed information of these structures – also known as domains – is of enormous importance for the development of magnetic memory and charging units.
Scientists of the BAM Working Group „X-ray topography“, together with colleagues of the HZB Helmholtz Centre Berlin, have developed a non-destructive visualisation technique for the micron- to millimetre-sized Weiss domains by combining a new measurement method and a new algorithm. They have devised an inverted Talbot–Lau neutron tomography which provides high-contrast images of the magnetic domains non-destructively.
Magnetic domains in a FeSi crystal
Silicon compound; ball and stick model
(© Peter Portius)
A group of researchers with the collaboration of BAM has prepared and fully characterised the first base adducts of silicon tetraazide. The highly energetic compounds combine a remarkable thermal stability, with a high reactive nitrogen content (up to 48 %) and convenient accessibility.
These properties and because silicon is abundant, cheap and environmentally harmless, such adducts of silicon tetraazide are promising highly energetic materials. The safe and convenient synthesis of solutions of pure silicon tetraazide is a major progress which opens up a new route to a number of new nitrogen-rich compounds.
Neutrale Lewis-Basen-Addukte des Siliciumtetraazids
Angewandte Chemie Int. Ed., Volume 49, Issue 43, pages 8013-8016, October
18, 2010. First published online on 15 September 2010. DOI:
10.1002/ange.201001826. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA,
Weinheim
Contact:
Dr. Klaus-Dieter Wehrstedt
Division 2.2 Reactive Substances and Systems
BAM Federal Institute for Materials Research and Testing
Unter den Eichen 87
12205 Berlin
Phone: +49 30 8104-1220
Email: klaus-dieter.wehrstedt@bam.de
The chairman of the Berlin-Brandenburg regional association of VDI, Ulrich Berger (left), and BAM’s president Manfred Hennecke (right)
The Association of German Engineers Berlin-Brandenburg (Verein Deutscher
Ingenieure, VDI) and BAM Federal Institute for Materials Research and Testing
have signed a cooperation agreement on 25 October 2010. The cooperation aims to
enhance networking between research and industry in the fields of the
engineering sciences.
More information (in German)
3D illustration of a TATP molecule
Triacetone triperoxide (TATP), an improvised explosive, is a potential
security threat, because of its cost-efficient synthesis and the difficulty in
detecting it. BAM scientists have developed a new method for simple, fast and
reliable TATP detection. The first successful production of antibodies against
TATP could be presented. These highly selective reagents enable the development
of biosensors for the detection of explosives with a minimum of false alarms.
Division I.5 Bioanalytics | Triacetone Triperoxide (TATP): Hapten Design and
Development of Antibodies (Langmuir 2010, 26 (19), pp 15418 - 15423)
Division I.5 Bioanalytics | Triacetone Triperoxide (TATP): Hapten Design and Development of Antibodies (Langmuir 2010, 26 (19), pp 15418 - 15423)
Finishing of culpting concrete
Division VII.1 developed a new and innovative 'sculpting concrete' for the reconstruction of parts of Charlottenburg Gate in Berlin
More information
Working group Cementitious Materials
Picture gallery (in German)
Young scientists
An introduction workshop for young scientists at BAM
took place at 21 June 2010
Picture gallery (in German)
House longhorn beetle
Biocides are used when harmful organisms are to be killed or dispelled from human beings or domestic animals. If biocides containing products are applied incorrectly, they are potentially dangerous, since these products contain toxic substances. Learn more about biocides on the new homepage of BAM's Assessment Point for Biocides:
Cross section of Shigella flexneri
How bacteria make syringes: For a successful infection, bacteria must outwit the immune system of the host. To this aim, they deliver so-called virulence factors through a transport channel located in the bacterial membrane. In some bacteria this transport channel is formed like a syringe, enabling them to inject virulence factors directly into the host cell. Scientists from the Max Planck Society and the Federal Institute for Materials Research and Testing have now succeeded for the first time in elucidating basic principles of the assembly of this transport channel.
More Information
Press release of the Max Planck Society of 13 June 2010
Internal mixer in BAM's new elastomer laboratory
At the end of 2009 BAM enhanced their elastomer laboratory with an internal mixer, rolling mill, two-floor press, laser writer and curemeter, in order to continuously provide high quality elastomer reference materials.
BAM offers high quality elastomer reference materials for industry, research establishments and government agencies. These reference materials are used for calibrating wear test equipment, examining swelling behaviour of elastomers in contact with fuels and solvents, measuring the roughness of road surfaces, and manufacturing test shoes for electrostatic tests. These elastomer reference materials are used in more than 75 countries world-wide and their use is stipulated in a number of standards. Together with the German rubber industry, BAM is currently developing a new calibration standard for devices which monitor cure behaviour (curemeter).
Elastomer reference materials can be ordered online in BAM's webshop.
Contact:
Dr. rer. nat. habil. Wolfgang Stark
Working group Elastomers and Reference Materials
Phone: +49 30 8104-1614
Email: Wolfgang.Stark@bam.de
Spokeswoman
Dr. rer. nat.