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A10509 Benzohydroxamic acid, 98%

CAS Number
Benzhydroxamic acid

Stock No. Size Price ($) Quantity Availability
A10509-09 10g 55.30
A10509-14 25g 117.00
A10509-18 50g 216.00
A10509-30 250g 883.00
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Benzohydroxamic acid, 98%


Chemical Properties

Formula Weight
Melting point
ca 125° dec.
Storage & Sensitivity
Keep Cold.
Soluble in alcohol. Slightly soluble in ether. Insoluble in benzene.


Benzhydroxamic acid is used as precursor in the synthesis of novel mono-anionic and di-anionic hydroxamato complexes by reacting with BiPh3 and Bi(O(t)Bu)3, which has anti-bacterial activity against helicobacter pylori. It is used in the photometric determination of trace amounts of vanadium in alloy steels by making mixed-ligand vanadium chelates with ammonium thiocyanate. It is also involved in the palladium catalyzed synthesis of benzisoxazolones.


Store in cool place. Incompatible with strong oxidizing agents.

Literature References

Reaction with alkynes, catalyzed by NaH in DMSO, gives 2-phenyloxazoles: Can. J. Chem., 51, 1368 (1973).

Oxidation with tetraalkylammonium periodates generates the transient benzoylnitroso compound, which can react in situ with dienes to give good yields of cycloaddition products: Tetrahedron Lett., 4763 (1978); J. Chem. Soc., Perkin 1, 883, 887 (1985); J. Org. Chem., 50, 1911 (1985).

Gibson, G. E.; Kelebek, S.; Aghamirian, M.; Yu, B. Flotation of pyrochlore from low grade carbonatite gravity tailings with benzohydroxamic acid. Miner. Eng. 2015, 71, 97-104.

Yang, S.; Feng, Q.; Qiu, X.; Gao, Y.; Xie, Z. Relationship between flotation and Fe/Mn ratio of wolframite with benzohydroxamic acid and sodium oleate as collectors. Physicochem. Probl. Miner. Process. 2014, 50 (2), 747-758.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335-H341

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Suspected of causing genetic defects.

Precautionary Statements: P201-P202-P261-P264b-P271-P280i-P281-P302+P352-P304+P340-P305+P351+P338-P308+P313-P332+P313-P337+P313-P362-P501c

Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear eye/face protection. Use personal protective equipment as required. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or concerned: Get medical advice/attention. If skin irritation occurs: If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

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