Terephthaloyl dichloride

Basic Information

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CAS Number

100-20-9

Molecular Formula

C8H4Cl2O2

Molecular Weight

203.02 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Agricultural Chemicals Pesticides Herbicides

Basic Physical Properties

Melting Point

81.0 to 84.0 deg-C

Boiling Point

266 °C

Solubility

ethanol: 5%, clear

Refractive Index

1.5684 (estimate)

Vapor Pressure

0.02 mmHg ( 25 °C)

SMILES

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ClC(=O)c1ccc(cc1)C(=O)Cl

InChI

InChI=1S/C8H4Cl2O2/c9-7(11)5-1-2-6(4-3-5)8(10)12/h1-4H

InChIKey

LXEJRKJRKIFVNY-UHFFFAOYSA-N

LogP

2.4446000000000003

Topological Polar Surface Area

34.14 Å²

Hydrogen Bond Donor/Acceptor

0 / 2

Complexity

173

Safety Information

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GHS Hazard Pictograms

H314

H331

Hazard Statement

H314 Causes severe skin burns and eye damage
Skin corrosion/irritation

H331 Toxic if inhaled
Acute toxicity, inhalation

Hazard Class

Class 6.1 Class 6.1

Sensitiveness

Moisture Sensitive

Explosive Limit

1.5-8.9%(V)

Synonyms & References

English

Terephthaloyl chloride
1,4-BENEZENEDICARBONYL CHLORIDE
1,4-BENZENEDICARBONYL CHLORIDE
1,4-Benzenedicarbonyl dichloride
P-PHTHALOYL CHLORIDE
TCL
TEREPHTHALIC ACID DICHLORIDE
TEREPHTHALOYL DICHLORIDE
TEREPHTHALYL CHLORIDE
1,4-dichloroformylbenzene
p-Phenylenedicarbonyl dichloride
p-Phthaloyl dichloride
p-Phthalyl dichloride
p-Phthanoylchloride
Terephthalic acid chloride
Terephthalic dichloride
tere-Phthalicchloride
bis(forMaldehyde)
phenylchloranuide
1,4-Dichloroformyl
p-Phthaloyl chlori
4-PHTHALOYLCHLORIDE
Terephthaloyl chlori
Terephthaloyl Dichloride
1,4-Benzenedicarbonyl chloride
Terephthaloyl dichloride
TCl

MDL Number

MFCD00000693

Customs Code

2917399090

FAQ

What are the physical and chemical properties of Terephthaloyl dichloride (CAS: 100-20-9)?

Terephthaloyl dichloride (CAS: 100-20-9) is a white crystalline solid with a molecular weight of approximately 146.03 g/mol. It is highly soluble in organic solvents such as dichloromethane, chloroform, and acetic acid. Chemically, it is highly reactive and prone to hydrolysis under basic conditions. It can also undergo esterification and polymerization reactions.

How is Terephthaloyl dichloride (CAS: 100-20-9) typically synthesized?

Terephthaloyl dichloride is typically synthesized from terephthalic acid by chlorination under acidic conditions. The reaction involves the chlorination of terephthalic acid, followed by distillation to purify the product. Common catalysts include thionyl chloride, which provides high selectivity and yield.

What industries use Terephthaloyl dichloride (CAS: 100-20-9)?

Terephthaloyl dichloride (CAS: 100-20-9) is primarily used in the production of polyethylene terephthalate (PET) for packaging materials, fibers, and films. It is also utilized in the synthesis of liquid crystals, thermosets, and epoxy resins for electronics and semiconductors.

What precautions should be taken when handling Terephthaloyl dichloride (CAS: 100-20-9)?

When handling terephthaloyl dichloride (CAS: 100-20-9), ensure proper personal protective equipment (PPE) including gloves, safety goggles, and a lab coat. Work should be conducted in a fume hood due to its volatility and reactivity. Spills should be cleaned up with care, using appropriate absorbents. Refer to the Safety Data Sheet (SDS) for detailed procedures and emergency response information.