Safe transport of cyanamide.
For many years cyanamide (CAS no. 420-04-2) was not commercially available due to its unstable nature. Since about 1965 the former "Süddeutsche Kalkstickstoffwerke AG" (current name: AlzChem Trostberg GmbH) developed a special stabilizing system. It was to be investigated to which Class (e.g. "Corrosive Substances", Class 8) or Division (e.g. "Self-reactive Substances", Division 4.1) of the International Regulations for the Transport of Dangerous Goods cyanamide (pure or as a 50% solution in water) should be assigned and based on this which maximum quantities are allowed to transport e.g. in tanks. Cyanamide is used for the synthesis of pharmaceutical and agrochemical actives, biocides, dyestuffs and fine chemicals. During the last years cyanamide was tested at BAM and AQura. The results and an appraisal are presented in this paper. Thus, cyanamide should be classified according to the UN Recommendations on the Transport of Dangerous Goods in Class 8, UN number 2922 (50% solution in water) and UN number 2923 (pure substance) respectively, packaging group III, danger labels 8+6.1. Cyanamide, 50% solution in water, can be transported in portable tanks under specific conditions.
Wehrstedt
Klaus-Dieter
KD
BAM Federal Institute for Materials Research and Testing, Division II.2 "Reactive Substances and Systems", Unter den Eichen 87, D-12205 Berlin, Germany. klaus-dieter.wehrstedt@bam.de
Wildner
Werner
W
Güthner
Thomas
T
Holzrichter
Klaus
K
Mertschenk
Bernd
B
Ulrich
Armin
A
D000818:Animals; D003484:Cyanamide / Q000737:chemistry / Q000633:toxicity; D003877:Dermatitis, Contact / Q000473:pathology; D053834:Explosive Agents / Q000737:chemistry; D017408:Guidelines as Topic; D015386:Hazardous Substances; D006358:Hot Temperature; D011817:Rabbits; D012449:Safety; D012867:Skin / Q000473:pathology; D012996:Solutions; D013696:Temperature; D013816:Thermodynamics; D014186:Transportation; D014480:United Nations
D053834:Explosive Agents; D015386:Hazardous Substances; D012996:Solutions; D003484:Cyanamide