• Product Name:1,3-Benzenedicarbonyl chloride
  • Molecular Formula:C8H4Cl2O2
  • Purity:99%
  • Molecular Weight:203.025

Product Details;

CasNo: 99-63-8

Molecular Formula: C8H4Cl2O2

Appearance: white crystalline mass

Quality products make an important contribution to long-term revenue and profitability.We supply High Quality Isophthaloyl dichloride 99-63-8 with Best Price.

1.What is the Isophthaloyl dichloride ?

Isophthaloyl dichloride (IPC) is an organic compound used as an important intermediate. Isophthaloyl dichloride is used in a variety of performance polymers and fibers, where it impacts flame resistance, temperature stability, chemical resistance, and flexibility. In addition, it is an effective stabilizer for urethane prepolymers due to its ability to scavenge water. Also used in aromatic fiber raw materials.





terephthaloyl chloride

terephthaloyl chloride

benzene-1,3-dicarbonyl dichloride

benzene-1,3-dicarbonyl dichloride

Conditions Yield
With chlorine; at 43 ℃; for 0.5h; Product distribution / selectivity; visible light irradiation;
l-cysteine hydrochloride

l-cysteine hydrochloride

benzene-1,3-dicarbonyl dichloride

benzene-1,3-dicarbonyl dichloride

Conditions Yield

2.What is the CAS number for 1,3-Benzenedicarbonyl chloride ?

The CAS number of 1,3-Benzenedicarbonyl chloride is 99-63-8.

More information of 1,3-Benzenedicarbonyl chloride 99-63-8 are:

CAS Number



1.427 g/cm3

Melting Point

43-44 °C(lit.)

Boiling Point

276.7 °C at 760 mmHg

Flash Point

131.9 °C

Vapor Pressure

0.00473mmHg at 25°C

Refractive Index








3.What are another words for 1,3-Benzenedicarbonyl chloride ?

Synonyms for 1,3-Benzenedicarbonyl chloride 99-63-8:Isophthaloylchloride (6CI,8CI);Isophthalic acidchloride;Isophthalic acid dichloride;1,3-Benzenedicarbonyl chloride;1,3-Bis(chlorocarbonyl)benzene;1,3-Di(chlorocarbonyl)benzene;Isophthalic chloride;Isophthaloyldichloride;Isophthalyl chloride;Isothaloyl chloride;NSC 41884;m-Benzenedicarbonyl chloride;m-Phthalic dichloride;m-Phthaloylchloride;m-Phthaloyl dichloride;Isophthaloyl Chloride;Isophthaloyl dichloride;

4.What is the molecular formula of 1,3-Benzenedicarbonyl chloride?

The chemical formula of  1,3-Benzenedicarbonyl chloride is C8H4Cl2O2 which containing 8 Carbon atoms,4 Hydrogen atoms,2 Chlorine atoms and 2 Oxygen atoms,and the molecular weight of  1,3-Benzenedicarbonyl chloride is 203.025.

5.What is 1,3-Benzenedicarbonyl chloride (99-63-8) used for?

Isophthaloyl dichloride is commonly used in the production of high-performance polymers such as aramids and liquid crystal polymers. It is a key intermediate in the synthesis of polyaramid fibers, which have high tensile strength, thermal stability, and chemical resistance, making them useful in applications such as protective clothing, aerospace materials, and bulletproof vests. NBD-hydrazine was reacted with isophthaloyl dichloride in THF to synthesize isophthalo-NBD.  Isophthaloyl dichloride is also used in the production of liquid crystal polymers, which have unique properties such as high strength, low dielectric constant, and low coefficient of thermal expansion, making them useful in electronic and automotive applications. Additionally, Isophthaloyl dichloride is used as a cross-linking agent in the synthesis of epoxy resins, which are widely used in adhesives, coatings, and composites.


Relevant articles related to 1,3-Benzenedicarbonyl chloride:



Enhanced both water flux and salt rejection of reverse osmosis membrane through combining isophthaloyl dichloride with biphenyl tetraacyl chloride as organic phase monomer for seawater desalination

, Journal of Membrane Science Volume 522, 15 January 2017, Pages 175-182

In this work, we prepared a novel class of polyamide thin composite film membranes for sea water desalination using isophthaloyl dichloride (IPC) and 3,3′,5,5′-biphenyl tetraacyl chloride (BTEC) as mixed organic monomer.

Entry point into new trimeric and tetrameric imide-based macrocyclic esters derived from isophthaloyl dichloride and methyl 6-aminonicotinate

, Acta Cryst. (2013). B69, 62-69

The one-step reaction of isophthaloyl dichloride with the 2-aminopyridine derivative (methyl 6-aminonicotinate) yields (i) a trimer-based macrocycle (EsIO)3 and (ii) a tetramer-based macrocycle (EsIO)4 in modest isolated synthetic yields (total of 25%), together with (iii) longer open-chain oligomers. The macrocyclization relies on the semi-flexible imide hinge formed by reaction of the 2-amino(pyridine) functional group with two acyl chloride functional groups.

6.High Quality Isophthaloyl dichloride 99-63-8 with Best Price.

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