Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
H2NOH•HCl
F.W. 69.50
Options:
Hazard Alert
Highly toxic by ingestion; strong tissue irritant. LD50 141 mg/kg. Incompatible with sodium hydroxide and other strong bases; reacts to form hydroxylamine, which may explode when heated.