Are o-Chlorobenzaldehyde and 2-Chlorobenzaldehyde the same isomer?

Yes. Both names identify the ortho isomer, CAS 89-98-5, formula C7H5ClO. It is different from the meta and para isomers and from 2-chlorobenzyl chloride, so the CAS number and isomer must both appear in the purchase documents.

What is o-Chlorobenzaldehyde used for?

It is an organic synthesis raw material widely used in electroplating and dye intermediates. The ortho isomer is also relevant to selected plant-growth-regulator intermediates and is used to make galvanizing brighteners.

Which batch criteria matter when buying industrial o-Chlorobenzaldehyde?

Confirm GC assay, water, colour, acidity and the limits for meta-, para- and other aromatic impurities. Also agree the packaging, storage-temperature basis and sampling method, so the quotation uses the same impurity profile.

What physical form and storage conditions should be confirmed?

The material may be colourless needle-like crystals or a colourless to yellowish oily liquid depending on temperature, with a melting point around 11.6 degrees C. Confirm supplied form, colour and packaging, and store in closed containers under the supplier's recommended temperature.

How is the ortho isomer distinguished from other chlorobenzaldehyde isomers?

Use the chlorine position and CAS number: o-chlorobenzaldehyde is 2-chlorobenzaldehyde, CAS 89-98-5, while the meta and para isomers have different CAS numbers. The ortho isomer is also not 2-chlorobenzyl chloride, so order by CAS and confirm the isomer profile rather than the name alone.

o-Chlorobenzaldehyde CAS 89-98-5

o-Chlorobenzaldehyde (OCBA), CAS 89-98-5, also known as 2-chlorobenzaldehyde, is an aromatic aldehyde with an ortho-chloro substituent used as a reactive intermediate in organic synthesis, where the aldehyde group enables condensation, cyclization and substitution reactions. Confirm the GC assay, isomer impurity limits, physical form, packaging and documentation before ordering; COA, TDS and SDS are available on request.

CAS: 89-98-5
Synonyms: o-Chlorobenzaldehyde; 2-Chlorobenzaldehyde; OCBA; Ortho-chlorobenzaldehyde
Einecs: 201-956-3
Molecular Formula: C₇H₅ClO
Grade: Industrial grade, content ≥99%
Package: Confirm packaging compatible with the offered form and destination requirements.

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Product Description

o-Chlorobenzaldehyde

Synonyms: 2-Chlorobenzaldehyde; OCBA

CAS number: 89-98-5

MDL number: MFCD00003304

EINECS number: 201-956-3

RTECS number: CU5075000

Beilstein number: 385877

PubChem CID: 24854053

Physical property data

Characteristics: colorless needle-like crystals or colorless to yellowish oily liquid with a benzaldehyde odour

Density: 1.2432 g/mL (25 °C)

Relative density: 1.2483 (20 °C, 4 °C)

Melting point: 11.6 °C

Boiling point: 212.5 °C (atmospheric pressure)

Refractive index (n²⁰): 1.5660

Refractive index (n²⁵): 1.5638

Flash point: 88 °C

Liquid phase standard heat of formation: -118.4 kJ/mol

Gas phase standard heat of formation: -62.7 kJ/mol

Solubility: Soluble in alcohol, ether, acetone and benzene; slightly soluble in water

Uses: This product is an organic synthesis raw material widely used in electroplating and dye intermediates. It is used to make zinc electroplating brighteners and serves as an intermediate for dyes, pharmaceuticals and agrochemicals.

FAQ - Technical & Supply Chain

Q:
Are o-Chlorobenzaldehyde and 2-Chlorobenzaldehyde the same isomer?

A: Yes. Both names identify the ortho isomer, CAS 89-98-5, formula C7H5ClO. It is different from the meta and para isomers and from 2-chlorobenzyl chloride, so the CAS number and isomer must both appear in the purchase documents.
Q:
What is o-Chlorobenzaldehyde used for?

A: It is an organic synthesis raw material widely used in electroplating and dye intermediates. The ortho isomer is also relevant to selected plant-growth-regulator intermediates and is used to make galvanizing brighteners.
Q:
Which batch criteria matter when buying industrial o-Chlorobenzaldehyde?

A: Confirm GC assay, water, colour, acidity and the limits for meta-, para- and other aromatic impurities. Also agree the packaging, storage-temperature basis and sampling method, so the quotation uses the same impurity profile.
Q:
What physical form and storage conditions should be confirmed?

A: The material may be colourless needle-like crystals or a colourless to yellowish oily liquid depending on temperature, with a melting point around 11.6 degrees C. Confirm supplied form, colour and packaging, and store in closed containers under the supplier's recommended temperature.
Q:
How is the ortho isomer distinguished from other chlorobenzaldehyde isomers?

A: Use the chlorine position and CAS number: o-chlorobenzaldehyde is 2-chlorobenzaldehyde, CAS 89-98-5, while the meta and para isomers have different CAS numbers. The ortho isomer is also not 2-chlorobenzyl chloride, so order by CAS and confirm the isomer profile rather than the name alone.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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