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2-chlorobenzaldehyde

CAS Number
89-98-5
EC Number
201-956-3
Chemical Formula
C7H5ClO
Molecular Weight
140.56 g/mol

Description

2-Chlorobenzaldehyde (CAS 89-98-5 ), also known as o-chlorobenzaldehyde, is an aromatic aldehyde used as a reactive intermediate in the synthesis of pharmaceuticals, agrochemicals, and specialty dyes. Its chloro-substituted structure makes it a valued building block where precise reactivity at the aldehyde and ring positions drives downstream synthesis efficiency in various chemical processes. In pharmaceutical manufacturing, it serves as a key precursor in the synthesis of active ingredients, including antihistamines and antimicrobial compounds for the healthcare sector. Dye and pigment producers use it to construct azo and triarylmethane colorants applied in textile and paper dyeing processes, ensuring high-quality results for industrial applications. In printing and packaging, it contributes to the formulation of specialty inks where reactive intermediates determine color fastness and substrate adhesion for commercial use. It also functions as a biocide intermediate, incorporated into preservation systems for leather treatment and industrial process fluids to maintain product integrity and safety. The product is supplied as a clear to pale yellow liquid in standard commercial packaging, including drums and IBC containers for bulk orders and large-scale distribution. Technical grade is the primary specification, with purity levels typically at 98% or higher as confirmed by GC analysis to meet rigorous industrial manufacturing requirements. Contact us for supply of 2-chlorobenzaldehyde Request Quote

Other Names (Synonyms)

ortho-chlorobenzaldehyde | o-chlorobenzaldehyde | Benzaldehyde, 2-chloro- | Benzaldehyde, o-chloro- | 2-Chlorbenzaldehyd | 2-Clorobenzaldeide | o-Chloorbenzaldehyde | USAF M-7

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point12.39 °C
Boiling Point211.9 °C @ Press: 760 Torr
Density1.2483 g/cm³ @ Temp: 20 °C
Flash Point190 °F
Appearancecolourless to brown liquid
ColorClear colorless to light yellow
OdorPenetrating odor
FormLiquid
Water Solubility0.1-0.5 g/100 mL at 24 ºC
Vapor Pressure1.27 mm Hg ( 50 °C)
Refractive Indexn 20/D 1.566(lit.)
pH2.9 (H2O)(saturated aqueous solution)
Log P2.44 at 25℃

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS09· Environment

Hazard Statements

H227Combustible liquid
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H411Toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P391Collect spillage.
P403Store in a well-ventilated place.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29130000
UN Number3265
ADR Class8
Packing GroupIII
Storage Class8A - Combustible corrosive hazardous materials
WGK (Germany)1