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Terephthaloyl chloride

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Terephthaloyl chloride Basic information

Product Name:
Terephthaloyl chloride
Synonyms:
  • 1,4-dichloroformylbenzene
  • p-Phenylenedicarbonyl dichloride
  • p-phenylenedicarbonyldichloride
  • p-Phthaloyl dichloride
  • Terephthaoloyl Chloride
  • TEREPHTHALOYL CHLORIDE, FLAKES, 99+%
  • 1,4-Benzenecarbonyl chloride
  • Terephthaloyl chloride, 99+%
CAS:
100-20-9
MF:
C8H4Cl2O2
MW:
203.02
EINECS:
202-829-5
Product Categories:
  • Fluorenes, etc. (reagent for high-performance polymer research)
  • Functional Materials
  • ACID CHLORIDES
  • Reagent for High-Performance Polymer Research
  • Acid Halides
  • Carbonyl Compounds
  • Organic Building Blocks
  • Piperidines ,Piperazines ,Homopiperidines
Mol File:
100-20-9.mol
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Terephthaloyl chloride Chemical Properties

Melting point:
79-81 °C(lit.)
Boiling point:
266 °C(lit.)
Density 
1,34 g/cm3
vapor density 
7 (vs air)
vapor pressure 
0.02 mm Hg ( 25 °C)
refractive index 
1.5684 (estimate)
Flash point:
356 °F
storage temp. 
2-8°C
solubility 
ethanol: 5%, clear
form 
flakes
color 
White to Almost white
PH
<0.5 (H2O)
explosive limit
1.5-8.9%(V)
Water Solubility 
REACTS
Sensitive 
Moisture Sensitive
BRN 
607796
InChIKey
LXEJRKJRKIFVNY-UHFFFAOYSA-N
CAS DataBase Reference
100-20-9(CAS DataBase Reference)
NIST Chemistry Reference
1,4-Benzenedicarbonyl dichloride(100-20-9)
EPA Substance Registry System
1,4-Benzenedicarbonyl dichloride (100-20-9)
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Safety Information

Hazard Codes 
C,T
Risk Statements 
34-23-35
Safety Statements 
26-27-36/37/39-45-38-28B
RIDADR 
UN 2923 8/PG 3
WGK Germany 
3
RTECS 
WZ1797000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
II
HS Code 
29173980
Hazardous Substances Data
100-20-9(Hazardous Substances Data)

MSDS

  • Language:English Provider:TCl
  • Language:English Provider:ACROS
  • Language:English Provider:SigmaAldrich
  • Language:English Provider:ALFA
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Terephthaloyl chloride Usage And Synthesis

Chemical Properties

monoclinic crystals or white crystalline flakes. Soluble in ethanol and organic solvents.

Uses

Terephthaloyl chloride and Isophthaloyl dichloride have many similar uses as monomers for the synthesis of specialty fibers and as raw materials for polymers such as polyamides and polyesters. Dyemanufacture; synthetic fibers, resins, films; UV absorption; pharmaceuticals; rubber chemicals; cross-linking agent for polyurethanes and polysulfides.

Uses

Terephthaloyl chloride acts as a monomer with p-phenylenediamine used in the preparation of polymer viz. poly paraphenylene terephthalamide. It is an active component in performance polymers and aramid fibers, which gives flame resistance, chemical resistance, temperature stability, light weight, and very high strength. It is also used as an effective water scavenger, utilized to stabilize isocyanates and urethane prepolymers. Further, it is used in the preparation of liquid crystalline thermosets by thermal cyclotrimerization of dicyanate compounds of ring substituted bis(4-hydroxyphenyl) terepthalates. In addition to this, it is involved in the condensation reaction with difunctional alfa, μ-diaminopolystyrene to get chain-extended polystyrene containing amide bonds along the polymer backbone.

Preparation

Synthesis of terephthaloyl chloride by thionyl chloride method: terephthalic acid is mixed with thionyl chloride, refluxed at 80℃ for 10-12h, then the thionyl chloride is evaporated, and the resulting crude product is distilled under reduced pressure to obtain the finished product.

General Description

Terephthaloyl chloride undergoes condensation reaction with difunctional α,ω-diaminopolystyrene to yield chain-extended polystyrene containing amide bonds along the polymer backbone. It undergoes interfacial reaction with bovine serum albumin to form thin cross-linked films.

Hazard

Skin irritant.

Flammability and Explosibility

Non flammable

Safety Profile

Moderately toxic by ingestion. Corrosive. Combustible when exposed to heat or flame. When heated to decomposition it emits toxic fumes of Cl-. See also CHLORIDES.

Purification Methods

Crystallise the acid chloride from dry hexane. [Beilstein 9 IV 3318.]

Terephthaloyl chloride Preparation Products And Raw materials

Preparation Products

Raw materials

Terephthaloyl chlorideSupplier

Shanghai YouPeng Chemical Co. Ltd. Gold
Tel
021-69005955 13701776567
Email
youpengchem@163.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Email
market03@meryer.com
Alfa Aesar
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400-6106006
Email
saleschina@alfa-asia.com
Danyang Wanlong Chemical Co., Ltd
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86-511-8681 0993
Email
jeff@wanlongchem.com
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Email
Sales-CN@TCIchemicals.com