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Amines and amides

Benzohydroxamic acid

Also known as N-Hydroxybenzamide, Benzhydroxamic acid, Benzamide, N-hydroxy-

CAS 495-18-1Formula C7H7NO2Molar mass 137.14 g/molEC 207-797-6
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard 19 suppliers listed
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Benzohydroxamic acid chemical structure, C7H7NO2, CAS 495-18-1
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Crystals
Melting point
126.1 to 130
Boiling point
Explodes
Solubility
5 to 10 mg/mL at 74.7 °F
HS code
292800
Category
Amines and amides
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Benzohydroxamic acid?

Plain description, key identifiers and synonyms

Rhombic crystals or light beige solid. (NTP, 1992)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-hydroxybenzamide
CAS number
495-18-1 CAS number cross-checkedOther or deprecated CAS: 122231-61-2, 32685-16-8
EC number
207-797-6
Molecular formula
C7H7NO2
UNII
K8YW73872D
MDL number
MFCD00002109
InChIKey
VDEUYMSGMPQMIK-UHFFFAOYSA-N
InChI
InChI=1S/C7H7NO2/c9-7(8-10)6-4-2-1-3-5-6/h1-5,10H,(H,8,9)
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C(=O)NO

Synonyms

  • N-Hydroxybenzamide
  • Benzhydroxamic acid
  • Benzamide, N-hydroxy-
  • Phenylhydroxamic acid
  • Benzoylhydroxamic acid
  • Hydroxylamine, N-benzoyl-
  • N-Hydroxy-benzamide
  • Benzohydroxamate
  • Benzohyroxamate
  • benzenecarbohydroxamic acid
  • N-Benzoylhydroxylamine
  • BHAM, Benzenehydroxamic acid, Benzhydroxamic acid, Benzohydroximic acid
  • BHO
  • benzohydroxamic
  • benzohydroxamsaure
  • 3uxk
  • benzoylhydroxylamine
  • benzoylamino-alcohol
  • henylhydroxamic acid
  • Benzenecarboximidic acid, N-hydroxy-, (Z)- (9CI)
  • hydroxyphenyl nitrone
  • benzenehydroximic acid
  • benzoyl hydroxamic acid
  • Benzhydroxamic acid, 99%
  • Benzohydroxamic acid, 98%

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Crystalsexp.
Melting point
126.1 to 130exp.
Boiling point
Explodesexp.
Solubility
5 to 10 mg/mL at 74.7 °Fexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
137.14 g/molcalc.
Exact mass
137.0477 Dacalc.
LogP (octanol/water)
0.81calc.
Topological polar surface area
49.33 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H341Suspected of causing genetic defects.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Benzohydroxamic acid suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 19 suppliers
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Where suppliers are based

19 suppliers in 5 countries

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Benzohydroxamic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Benzohydroxamic acid is traded under.

HS 2928.00Indicative HS code

Organic derivatives of hydrazine or of hydroxylamine

World exports in 2024
$1.38B
−9.0% vs 2023, imports $1.52B
2019 to 2024
Top exporters
  1. Switzerland * partner reported44.0%
  2. China18.4%
  3. Italy9.4%
Top importers
  1. Brazil21.8%
  2. United States12.8%
  3. Italy10.8%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Benzohydroxamic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Benzohydroxamic acid, based on the data on this page

What is Benzohydroxamic acid?

Rhombic crystals or light beige solid. (NTP, 1992)

What is the CAS number of Benzohydroxamic acid?

The CAS registry number of Benzohydroxamic acid is 495-18-1. Other or deprecated CAS numbers: 122231-61-2, 32685-16-8.

What is the molecular formula and weight of Benzohydroxamic acid?

The molecular formula of Benzohydroxamic acid is C7H7NO2 and its molar mass is 137.14 g/mol.

What is Benzohydroxamic acid used for?

Known uses and roles of Benzohydroxamic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Benzohydroxamic acid hazardous?

Benzohydroxamic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Benzohydroxamic acid?

Benzohydroxamic acid is usually classified under HS code 292800 (Organic derivatives of hydrazine or of hydroxylamine). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Benzohydroxamic acid?

CompoundList lists 19 suppliers of Benzohydroxamic acid in China, United States, United Kingdom, Hong Kong and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Benzohydroxamic acid?

Suppliers quote Benzohydroxamic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Benzohydroxamic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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