Solvents REACH

1,2-dichlorobenzene

CAS Number

95-50-1

EC Number

202-425-9

Abbreviation

ODCB

Industries: Coatings, Adhesives, Sealants & Elastomers Textiles, Leather & Paper

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What is 1,2-dichlorobenzene?

1,2-Dichlorobenzene (CAS 95-50-1), commonly known as ODCB, is a high-boiling aromatic solvent used in industrial processing and chemical manufacturing.

Where is 1,2-dichlorobenzene used?

Process solvent, carrier and intermediate where thermal stability is required
Strong solvency for non-polar substrates
Textile and leather: carrier solvent for disperse dyes, enabling uniform dye penetration into synthetic fibers
Coatings and adhesives: dissolves resins, pigment dispersions and elastomer compounds
Plastics and polymers: reaction medium and processing solvent
It is used in polyphenylene sulfide (PPS) synthesis and other high-performance polymer production cycles.
Water treatment and industrial biocides: solvent carrier that helps deliver active ingredients targeting microbial control in large-scale industrial water systems and cooling towers

Commercial specifications

Technical grade, purity typically 99% or higher
Refined grades meeting tighter purity thresholds
Clear liquid in bulk quantities: ISO tank, drum and IBC formats

Other Names (Synonyms)

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What are the physical properties of 1,2-dichlorobenzene?

Melting Point -16.7 °C

Boiling Point 180.1 °C @ Press: 760 Torr

Density 1.3059 g/cm³ @ Temp: 20 °C

Flash Point 150 °F

Appearance There are three isomeric forms of dichlorobenzene (DCB): m-DCB is a flammable liquid and vapor.

Color Clear colorless to very slightly yellow

Odor Aromatic; characteristic aromatic.

Form Liquid

Water Solubility 0.13 g/L (20 ºC)

Vapor Pressure 1.2 mm Hg ( 20 °C)

Refractive Index n 20/D 1.551

Log P 3.433 at 25℃

How is 1,2-dichlorobenzene classified and handled safely? Learn More

Warning

GHS07· Irritant GHS09· Environmental Hazard GHS08· Health Hazard GHS06· Toxic

Hazard Statements

H227 Combustible liquid

H302 Harmful if swallowed

H315 Causes skin irritation

H317 May cause an allergic skin reaction

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

Which trade and regulatory codes apply to 1,2-dichlorobenzene?

HS Code 29036100

UN Number 1993

ADR Class 3

Packing Group II

Storage Class 6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects

WGK (Germany) 3