title: Decomposition of hydroxylamine/water solution with added iron ion.
abstract: Decomposition hazards of hydroxylamine (HA)/water solution with and without the addition of iron ion were studied in this paper. Tests were conducted to obtain information about decomposition hazards of HA/water solution following the United Nations recommendations on the transport of dangerous goods. When the heat accumulation storage test was conducted using HA50 wt.%/water solution without the addition of iron ion, the self-accelerating decomposition temperature (SADT) was 80 degrees C. Therefore, HA50 wt.%/water solution was not classified with self-reactive substances following the United Nations recommendations on the transport of dangerous goods. Decomposition hazards of HA50 wt.%/water solution with added iron ion were investigated. The concentration of iron ion in sample of HA50 wt.%/water solution without the addition of iron ion was below 1.0 ppm. The range of the concentration of iron ion in sample of HA50 wt.%/water solution with added iron ion was between 1.0 and 5.4 ppm. The thermal stability of HA50 wt.%/water solution decreased by the addition of iron ion in the heat accumulation storage test. HA50 wt.%/water solution with the addition of iron ion was classified with self-reactive substances following the United Nations recommendations on the transport of dangerous goods. The intensity of the thermal decomposition of HA50 wt.%/water solution increased by the addition of iron ion in the Koenen test.
authors: National Research Institute of Fire and Disaster, 14-1 Nakahara 3-Chome Mitaka, Tokyo 181-8633, Japan. iwata@fri.go.jp
authors: Yusaku
authors: Y
authors: Iwata
authors: Hiroshi
authors: H
authors: Koseki
mesh_terms: D000059:Accidents; D005107:Explosions; D015386:Hazardous Substances; D019811:Hydroxylamine / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D018570:Risk Assessment; D012666:Semiconductors; D012995:Solubility; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D015386:Hazardous Substances; D014867:Water; D019811:Hydroxylamine; D007501:Iron