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Phthaloyl dichloride

Basic information Safety Supplier Related

Phthaloyl dichloride Basic information

Product Name:
Phthaloyl dichloride
Synonyms:
  • benzenedioylchloride
  • Phthalic chloride
  • Phthalic dichloride
  • Phthalyl dichloride
  • 1,2-Bis(chlorocarbonyl)benzene
  • o-Phtaloyl chloride
  • o-Phthalic acid dichloride
  • O-Phthaloyl dichloride, 90%, remainder mainly phthalic acid
CAS:
88-95-9
MF:
C8H4Cl2O2
MW:
203.02
EINECS:
201-869-0
Product Categories:
  • ACID CHLORIDES
  • o-Phthaloyl Dichloride, o-Diacetyl Chloride
  • K00001
  • bc0001
Mol File:
88-95-9.mol
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Phthaloyl dichloride Chemical Properties

Melting point:
6-12 °C(lit.)
Boiling point:
269-271 °C(lit.)
Density 
1.409 g/mL at 25 °C(lit.)
vapor pressure 
30 mm Hg ( 47 °C)
refractive index 
n20/D 1.568(lit.)
Flash point:
>230 °F
storage temp. 
Store below +30°C.
solubility 
Miscible with ether.
form 
Liquid
color 
Clear yellow
Water Solubility 
decomposes
Sensitive 
Moisture Sensitive
Merck 
14,7375
BRN 
608200
Stability:
Moisture Sensitive
CAS DataBase Reference
88-95-9(CAS DataBase Reference)
NIST Chemistry Reference
1,2-Benzenedicarbonyl dichloride(88-95-9)
EPA Substance Registry System
1,2-Benzenedicarbonyl dichloride (88-95-9)
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Safety Information

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-36/37/39-45
RIDADR 
UN 3265 8/PG 2
WGK Germany 
3
21
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29173980

MSDS

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Phthaloyl dichloride Usage And Synthesis

Chemical Properties

colorless or clear yellow oily liquid. decompose with water and alcohol, soluble in ether, chloroform and benzene.

Uses

Phthaloyl chloride is used for the preparation of volatile acid chlorides from the acids. It acts as a trapping agent for the nitrite ion in the fluorodenitration of aromatic substrates with potassium fluoride. It serves as an additive in polymers and fibers to improve the color stability. It is used as an ingredient in ceramic mold binders, as a stabilizer for polymers and in reverse osmosis membranes.

Uses

o-Phthaloyl Dichloride is used in the phthaloylation of hemicelluloses as an efficient way to improve their lipophilicity and hydrophilicity. Phthaloylation of hemicelluloses is also a key precursor to preparing polysaccharide derivatives.

Preparation

Synthesis of phthaloyl dichloride: Mix 148g of phthalic anhydride with 220g of phosphorus pentachloride, heat, gradually increase the temperature to 250°C, escape the phosphorus oxychloride, distill the reaction product under reduced pressure, collect the 131-133°C (1.2-1.33kPa) fraction to obtain 187g of phthaloyl dichloride.

General Description

equilibrium mixture (phthaloyl chloride ~80% and pseudochloride ~10%) both components show equal chemical behaviour

Phthaloyl dichloride Preparation Products And Raw materials

Preparation Products

Phthaloyl dichlorideSupplier

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