CompoundList
Sign in
Impurities and reference standards

2-Chlorobenzaldehyde

Also known as o-Chlorobenzaldehyde, Benzaldehyde, 2-chloro-, Benzaldehyde, o-chloro-

CAS 89-98-5Formula C7H5ClOMolar mass 140.57 g/molEC 201-956-3
GHS signal word: Danger. Pictograms: Corrosive 59 suppliers listed
Get quotes Compare 59 suppliers
2-Chlorobenzaldehyde chemical structure, C7H5ClO, CAS 89-98-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless to yellowish liquid
Melting point
11.9 °C
Boiling point
212 °C
Density
1.2483 g/cm³ at 20 °C
Flash point
87 °C
HS code
291300
Category
Impurities and reference standards
UN number
UN 3265
Illustrative photo, clear liquid in sealed glass ampoules on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2-Chlorobenzaldehyde?

Plain description, key identifiers and synonyms

2-chlorobenzaldehyde is a clear colorless to yellowish liquid. (NTP, 1992)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-chlorobenzaldehyde
CAS number
89-98-5 CAS number cross-checkedOther or deprecated CAS: 35913-09-8
EC number
201-956-3
Molecular formula
C7H5ClO
UNII
QHR24X1LXK
MDL number
MFCD00003304
InChIKey
FPYUJUBAXZAQNL-UHFFFAOYSA-N
InChI
InChI=1S/C7H5ClO/c8-7-4-2-1-3-6(7)5-9/h1-5H
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)C=O)Cl

Synonyms

  • o-Chlorobenzaldehyde
  • Benzaldehyde, 2-chloro-
  • Benzaldehyde, o-chloro-
  • 2-Chlorbenzaldehyd
  • 2-Clorobenzaldeide
  • o-Chloorbenzaldehyde
  • USAF M-7
  • 2-Chloorbenzaldehyde
  • o-Chlorobenzenecarboxaldehyde
  • Chlorobenzaldehyde
  • 2-chloro-benzaldehyde
  • Amlodipine Impurity T
  • 2-chloro benzaldehyde
  • Benzaldehyde, chloro-
  • Benzaldehyde,chloro-
  • o-chlorobezaldehyde
  • 2-chlorobezaldehyde
  • 6-chlorobenzaldehyde
  • o-Chloroformylbenzene
  • orthochlorobenzaldehyde
  • 2- chlorobenzaldehyde
  • 2-chlorobenzenaldehyde
  • (2-chloro)benzaldehye
  • ortho-chlorobenzaldehyde
  • (2-chloro)benzaldehyde
Show all 31 synonyms
  • Amlodipine Impurity 65
  • (2-chloro) benzaldehyde
  • 2-Chlorobenzaldehyde, 99%
  • Chlorobenzaldehyde, o-
  • 2-Chlorobenzaldehyde(Discontinued,See C4X-109565)
  • 2-Chlorobenzaldehyde, purum, dist., >=98.0% (GC)

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

Appearance
Colorless to yellowish liquidexp.
Odour
Penetrating odorexp.
Melting point
11.9 °Cexp.
Boiling point
212 °Cexp.
Density
1.2483 g/cm³ at 20 °Cexp.
Flash point
87 °Cexp.
Autoignition temperature
385 °Cexp.
Solubility
Slightly soluble in waterexp.
Vapour pressure
0.23 mm Hg at 20 °Cexp.

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
140.57 g/molcalc.
Exact mass
140.0029 Dacalc.
LogP (octanol/water)
2.15calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
9calc.
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
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H314Causes severe skin burns and eye damage.
Precautionary statements (12)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3265
Transport hazard class
8

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

2-Chlorobenzaldehyde suppliers

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

All 59 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

59 suppliers in 10 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

2-Chlorobenzaldehyde price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Intermediate in the preparation of triphenyl methane and related dyes, organic intermediate. (Chlorobenzaldehyde).

Industrial uses: Intermediate.

How it is made

2-Chlorobenzaldehyde is produced mainly by chlorination of 2-chlorotoluene to form 2-chlorobenzal chloride, which is then subjected to acid hydrolysis. Metal salts, such as iron(III) chloride, are used as catalysts. The hydrolysis can also be accomplished using formic acid without a catalyst.

2-Chlorobenzaldehyde can also be produced by oxidation of 2-chlorobenzyl chloride with N-oxides of tertiary amines or with dilute nitric acid.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 605-011-00-X

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 2-Chlorobenzaldehyde is traded under.

HS 2913.00Indicative HS code

Halogenated, sulphonated, nitrated or nitrosated derivatives of products of heading 2912

World exports in 2024
$53.8M
−28.4% vs 2023, imports $62M
2019 to 2024
Top exporters
  1. China62.0%
  2. India * partner reported22.7%
  3. Japan6.6%
Top importers
  1. India * partner reported37.9%
  2. Japan9.9%
  3. Germany7.6%

* Partner reported figures, a lower bound.

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

The HS code shown for 2-Chlorobenzaldehyde is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Chlorobenzaldehyde, based on the data on this page

What is 2-Chlorobenzaldehyde?

2-chlorobenzaldehyde is a clear colorless to yellowish liquid. (NTP, 1992)

What is the CAS number of 2-Chlorobenzaldehyde?

The CAS registry number of 2-Chlorobenzaldehyde is 89-98-5. Other or deprecated CAS numbers: 35913-09-8.

What is the molecular formula and weight of 2-Chlorobenzaldehyde?

The molecular formula of 2-Chlorobenzaldehyde is C7H5ClO and its molar mass is 140.57 g/mol.

What is 2-Chlorobenzaldehyde used for?

Intermediate in the preparation of triphenyl methane and related dyes, organic intermediate. (Chlorobenzaldehyde). Industrial uses: Intermediate.

Is 2-Chlorobenzaldehyde hazardous?

2-Chlorobenzaldehyde carries the GHS signal word "Danger". Main hazards: causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Chlorobenzaldehyde?

2-Chlorobenzaldehyde is usually classified under HS code 291300 (Halogenated, sulphonated, nitrated or nitrosated derivatives of products of heading 2912). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Chlorobenzaldehyde?

CompoundList lists 59 suppliers of 2-Chlorobenzaldehyde in China, India, United States, Germany and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Chlorobenzaldehyde in India?

11 suppliers in India list 2-Chlorobenzaldehyde on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Chlorobenzaldehyde?

Suppliers quote 2-Chlorobenzaldehyde 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 2-Chlorobenzaldehyde

Get quotes for 2-Chlorobenzaldehyde

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell 2-Chlorobenzaldehyde
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of 2-Chlorobenzaldehyde with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/2-chlorobenzaldehyde-89-98-5" title="2-Chlorobenzaldehyde structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Impurities and reference standards or HS code 291300

59 suppliers
Free quotes, contact stays private
Get quotes