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Hydroxylamine hydrochloride

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Hydroxylamine hydrochloride Basic information
Hydroxylamine hydrochloride Chemical Properties
  • Melting point:155-157 °C (dec.)(lit.)
  • Density 1.67 g/mL at 25 °C(lit.)
  • vapor pressure 0.054 Pa (50 °C)
  • storage temp. Store at RT.
  • solubility 470g/l
  • form Liquid
  • color White to off-white
  • PH2.5-3.5 (25℃, 50mg/mL in H2O)
  • Water Solubility 560 g/L (20 ºC)
  • Sensitive Hygroscopic
  • Merck 14,4828
  • BRN 3539763
  • Stability:Substances to be avoided include strong oxidizing agents. Heating above 115 C may cause explosion; do not store above 65C. Moisture and air sensitive.
  • CAS DataBase Reference5470-11-1(CAS DataBase Reference)
  • EPA Substance Registry SystemHydroxylamine hydrochloride (5470-11-1)
Safety Information
Hydroxylamine hydrochloride Usage And Synthesis
  • Chemical PropertiesWhite crystals
  • Physical propertiesColorless monoclinic crystals; hygroscopic; decomposes slowly in moist air;density 1.67 g/cm3at 17°C; melts at 151°C (decomposes); highly soluble inwater (84g/100g at 20°C); soluble in lower alcohols and glycols; pH of 0.1molar solution 3.4.
  • UsesOrganic synthesis, photographic developer, medicine, controlled reduction reactions, nondiscoloring short-stopper for synthetic rubbers, antioxidant for fatty acids.
  • PreparationHydroxylamine hydrochloride is prepared by electrolytic reduction ofammonium chloride.
  • General DescriptionColorless or off-white crystalline solid. pH (0.1 molar aqueous solution) 3.4. pH (0.2 molar aqueous solution) 3.2.
  • Air & Water ReactionsHygroscopic. Sensitive to prolonged exposure to air. Water soluble. Reacts slowly with water.
  • Reactivity ProfileA powerful reducing agent. Reacts with bases and oxidizing agents.
  • HazardToxic by ingestion, strong irritant to tissue.
  • Fire HazardFlash point data for Hydroxylamine hydrochloride are not available; however, Hydroxylamine hydrochloride is probably combustible.
  • Contact allergensHydroxylamine and its salts are used in various branches of industry, as reducing agents in color film developers or as reagents in laboratories.
  • Purification MethodsCrystallise the salt from aqueous75% ethanol or boiling methanol, and dry it under vacuum over CaSO4 or P2O5. It has also been dissolved in a minimum of water and saturated with HCl; after three such crystallisations, it is dried under a vacuum over CaCl2 and NaOH. Its solubility at 20o is 85% in H2O, 6% in EtOH and 12% in MeOH. [Hurd Inorg Synth I 87 1939, Semon in Org Synth Coll Vol I 318 1941.]
Hydroxylamine hydrochloride Preparation Products And Raw materials
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