Diphenylchloroarsine (Norin, Motron, Intar, Clark I, DA) - organic compound of arsenic ; irritant of the sternite group. Discovered by Michaelis and La Coste in 1878 .
| Diphenylchloroarsine | |
|---|---|
 | |
| Are common | |
| Abbreviations | DA |
| Chem. formula | C 12 H 10 AsCl |
| Physical properties | |
| condition | colorless crystals |
| Molar mass | 264.59 g / mol |
| Density | 1,422 g / cm³ |
| Thermal properties | |
| T. melt. | 44 ° C |
| T. Kip. | 333 ° C |
| Chemical properties | |
| Water solubility | 0.2 g / 100 ml |
| Classification | |
| Reg. CAS number | 712-48-1 |
| Pubchem | |
| Reg. EINECS number | |
| SMILES | |
| Inchi | |
| Chemspider | |
Properties
Diphenylchloroarsin is more chemically resistant than diphenylcyanarsine , similar in properties, especially when heated. At 230 ° C, diphenylchloroarsine turns yellow and slowly begins to deteriorate. In 15 minutes at 600 ° C, 22% decomposes, and at 750 ° C - 48% of the substance.
Combat use
It was used as a chemical agent in the fields of the First World War [1] . He was part of the German chemical shell " blue cross ", used for the first time in July 1917 in Flanders . With the explosion of the projectile formed an aerosol of nanoparticles that can penetrate through a carbon filter gas mask .
At a concentration of 0.1 µg / l , the effect of diphenylchloroarsine begins to be felt, and a concentration of more than 1 µg / l is already intolerable for a person without an aerosol filter. However, the irritating effect can also be felt on the skin if aerosol particles get on it. If you hit 0.05 mg / cm 2 diphenylchloroarsin causes redness, and with a higher density of damage, erythema , tumors and even blisters can occur.
Other uses
Diphenylchloroarsin is a useful reagent for the preparation of other diphenyl arsenic compounds, for example, by the Grignard reaction :
where R is an alkyl or aryl radical.
See also
- Diphenylcyanarsin
- Adamsit
- Chemical warfare agents in the First World War
Notes
- ↑ Gilbert, Martin. First World War. - HarperCollins, 1995. - ISBN 0006376665 .
Literature
- Aleksandrov V.N., Emelyanov V.I. Toxic Substances: Study Guide / Ed. Dr. chem. sciences, prof. G. A. Sokolsky. - 2nd ed., Pererab. and add. - M .: Military Publishing , 1990. - 272 p. - 100 000 copies - ISBN 5-203-00341-6 .
- Supotnitsky M.V. , Petrov S.V., Kovtun V.A. The Influence of Chemical Weapons on the Tactics and Operational Art of the First World War (historical essay), Part 1 // Bulletin of RCB forces of protection. - 2017. - V. 1. - № 1. - P. 53-68.
- Supotnitsky M.V. , Petrov S.V., Kovtun V.A. The Influence of Chemical Weapons on the Tactics and Operational Art of the First World War (historical essay), Part 2 (continued) // Bulletin of RCB Defense Forces. - 2017. - V. 1. - № 2. - P. 39-64.
- Supotnitsky M.V. , Petrov S.V., Kovtun V.A. The Influence of Chemical Weapons on the Tactics and Operational Art of the First World War (historical sketch), part 3 (ending) // Bulletin of RCB protection troops. - 2017. - V. 1. - № 3. - P. 51-78.