benzohydroxamic acid Cas:495-18-1

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benzohydroxamic acid

benzohydroxamic acid
Benzamide, N-hydroxy-
Benzohydroxamic acid
Benzhydroxamic acid
hydroxy benzamide
benzoyl hydroxylamine
benzoylhydroxamic acid

molecular formula: C7H7NO2
Molecular weight: 137.136

Physical Properties:

Appearance and Properties: Brown crystalline powder
Density: 1.237 g/cm3
Boiling point: 327.1ºC at 760 mmHg
Melting point: 126-130 °C (lit.)
Flash point: 201ºC
Water solubility: 22 g/L (6 ºC)


Items of Analysis

Standard of Analysis


White crystal



Organic sodium salt content


Water content


Other impurities


Benzohydroxamic acid is an effective collector for refractory minerals such as smithsonite, wolframite, scheelite and cassiterite. Benzohydroxamic acid can be used for flotation of smithsonite under specific conditions to obtain ideal separation indicators; industrial applications show that benzhydroxamic acid is used in conjunction with some other chemicals to produce in wolframite and scheelite. In the flotation operation, the ideal flotation effect of the concentrate grade and recovery rate has been greatly improved.
Package and Storage:
80kg/plastic woven bag, 100kg/iron drum


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