Basic Description

Synonyms	PHTHALOYL CHLORIDE \| 1,2-Bis(chlorocarbonyl)benzene \| STL453643 \| 1,2-Phthaloyl dichloride \| benzene-1,2-dicarbonyl dichloride \| Phthalic acid dichloride \| 1,2-Benzenedicarbonyl dichloride \| PHTHALOYL CHLORIDE [MI] \| CCRIS 8625 \| EINECS 201-869-0 \| W-1003
Specifications & Purity	≥90%
Shipped In	Normal

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Benzenoids
  - Class Benzene and substituted derivatives
    - Subclass Benzoic acids and derivatives

Kingdom	Organic compounds
Superclass	Benzenoids
Class	Benzene and substituted derivatives
Subclass	Benzoic acids and derivatives
Intermediate Tree Nodes	Not available
Direct Parent	Benzoic acids and derivatives
Alternative Parents	Benzoyl derivatives Acyl chlorides Organooxygen compounds Organochlorides Organic oxides Hydrocarbon derivatives
Molecular Framework	Aromatic homomonocyclic compounds
Substituents	Benzoic acid or derivatives - Benzoyl - Acyl halide - Acyl chloride - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organochloride - Organohalogen compound - Aromatic homomonocyclic compound
Description	This compound belongs to the class of organic compounds known as benzoic acids and derivatives. These are organic compounds containing a carboxylic acid substituent attached to a benzene ring.
External Descriptors	Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

Names and Identifiers

IUPAC Name	benzene-1,2-dicarbonyl chloride
INCHI	InChI=1S/C8H4Cl2O2/c9-7(11)5-3-1-2-4-6(5)8(10)12/h1-4H
InChIKey	FYXKZNLBZKRYSS-UHFFFAOYSA-N
Smiles	C1=CC=C(C(=C1)C(=O)Cl)C(=O)Cl
Isomeric SMILES	C1=CC=C(C(=C1)C(=O)Cl)C(=O)Cl
WGK Germany	3
UN Number	3265
Packing Group	II
Molecular Weight	203.02
Beilstein	608200
Reaxy-Rn	608200
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=608200&ln=

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):

Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

9 results found

Lot Number	Certificate Type	Date	Item
F2518169	Certificate of Analysis	Jun 26, 2025	P106937
L2405167	Certificate of Analysis	Oct 16, 2024	P106937
A2213045	Certificate of Analysis	Oct 20, 2023	P106937
A2212112	Certificate of Analysis	Oct 20, 2023	P106937
D2101167	Certificate of Analysis	Jan 11, 2023	P106937
D2101166	Certificate of Analysis	Jan 11, 2023	P106937
D2101217	Certificate of Analysis	Jan 11, 2023	P106937
D2101168	Certificate of Analysis	Jan 11, 2023	P106937
D2101165	Certificate of Analysis	Jan 11, 2023	P106937

Chemical and Physical Properties

Sensitivity	Moisture & Light sensitive
Freezing Point(°C)	12 °C
Refractive Index	1.5692
Flash Point(°F)	235.4 °F - closed cup
Flash Point(°C)	113 °C - closed cup
Boil Point(°C)	269-271 °C (lit.)
Melt Point(°C)	6-12 °C (lit.)
Molecular Weight	203.020 g/mol
XLogP3	2.700
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	2
Exact Mass	201.959 Da
Monoisotopic Mass	201.959 Da
Topological Polar Surface Area	34.100 Å²
Heavy Atom Count	12
Formal Charge	0
Complexity	181.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	1

Citations of This Product

How to Cite Aladdin Scientific Products?

1. Zhenghui Yang, Haiquan Guo, Chuanqing Kang, Lianxun Gao. (2021) Synthesis and characterization of amide-bridged colorless polyimide films with low CTE and high optical performance for flexible OLED displays. Polymer Chemistry, 12 (37): (5364-5376).
2. Jin Wang, Wubin Wang, Yufei Yan, Yaxuan Liu, Guangxu Zhang, Jizhen Li, Yuyao Wu. (2025) Impact of acyl chloride monomers on the structure and performance of polyamide nanofiltration membranes for lithium-magnesium separation. JOURNAL OF MEMBRANE SCIENCE, 722 (123858).

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SKU	Size	Availability	Price
P106937-25g	25g	3	$9.90
P106937-100g	100g	3	$29.90
P106937-500g	500g	Available within 4-8 weeks(?) Items will be manufactured post-order and can take 4-8 weeks. Thank you for your patience!	$113.90

Phthaloyl chloride - 90%, high purity , CAS No.88-95-9