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2905-61-5 Usage


2,5-Dichlorobenzoyl Chloride is an organic compound characterized by its white solid appearance. It is known for its role as a plant growth stimulator or regulator, making it a valuable chemical in the agricultural industry. Additionally, it serves as a useful research chemical for organic synthesis and other chemical processes, highlighting its importance in the field of chemistry.


Used in Agricultural Industry:
2,5-Dichlorobenzoyl Chloride is used as a plant growth stimulator or regulator for enhancing the growth and development of plants. Its application reason lies in its ability to modulate plant growth processes, leading to improved crop yields and quality.
Used in Chemical Research and Organic Synthesis:
2,5-Dichlorobenzoyl Chloride is used as a research chemical in the field of organic synthesis. It serves as a key intermediate in the synthesis of various organic compounds, contributing to the development of new materials and chemicals with potential applications in various industries.
Used in Pharmaceutical Industry:
Although not explicitly mentioned in the provided materials, 2,5-Dichlorobenzoyl Chloride may also find applications in the pharmaceutical industry as a building block for the synthesis of pharmaceutical compounds. Its role in this industry would be as a chemical intermediate for the development of new drugs and therapeutic agents.

Check Digit Verification of cas no

The CAS Registry Mumber 2905-61-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,9,0 and 5 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2905-61:
85 % 10 = 5
So 2905-61-5 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017


1.1 GHS Product identifier


1.2 Other means of identification

Product number -
Other names 2,5-dichloro-benzoyl chloride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2905-61-5 SDS

2905-61-5Relevant articles and documents

Synthesis and investigation of sulfonated poly(: P -phenylene)-based ionomers with precisely controlled ion exchange capacity for use as polymer electrolyte membranes

Rikukawa, Masahiro,Takahashi, Satoshi,Takeoka, Yuko,Yoshida-Hirahara, Miru,Yoshizawa-Fujita, Masahiro

, p. 12810 - 12822 (2020/04/22)

To achieve precise control of sulfonated polymer structures, a series of poly(p-phenylene)-based ionomers with well-controlled ion exchange capacities (IECs) were synthesised via a three-step technique: (1) preceding sulfonation of the monomer with a protecting group, (2) nickel(0) catalysed coupling polymerisation, and (3) cleavage of the protecting group of the polymers. 2,2-Dimethylpropyl-4-[4-(2,5-dichlorobenzoyl)phenoxy]benzenesulfonate (NS-DPBP) was synthesised as the preceding sulfonated monomer by treatment with chlorosulfuric acid and neopentyl alcohol. NS-DPBP was readily soluble in various organic solvents and stable during the nickel(0) catalysed coupling reaction. Sulfonated poly(4-phenoxybenzoyl-1,4-phenylene) (S-PPBP) homopolymer and seven types of random copolymers (S-PPBP-co-PPBP) with different IECs were obtained by varying the stoichiometry of NS-DPBP. The IECs and weight average molecular weights (Mws) of ionomers were in the range of 0.41-2.84 meq. g-1 and 143 000-465 000 g mol-1, respectively. The water uptake, proton conductivities, and water diffusion properties of ionomers exhibited a strong IEC dependence. Upon increasing the IEC of S-PPBP-co-PPBPs from 0.86 to 2.40 meq. g-1, the conductivities increased from 6.9 × 10-6 S cm-1 to 1.8 × 10-1 S cm-1 at 90% RH. S-PPBP and S-PPBP-co-PPBP (4 : 1) with IEC values >2.40 meq. g-1 exhibited fast water diffusion (1.6 × 10-11 to 8.0 × 10-10 m2 s-1), and were comparable to commercial perfluorosulfuric acid polymers. When fully hydrated, the maximum power density and the limiting current density of membrane electrode assemblies (MEAs) prepared with S-PPBP-co-PPBP (4 : 1) were 712 mW cm-2 and 1840 mA cm-2, respectively.

Conformations, equilibrium thermodynamics and rotational barriers of secondary thiobenzanilides

Kozic, Ján,Novák, Zdeněk,?ímal, Václav,Profant, Václav,Kune?, Ji?í,Vin?ová, Jarmila

, p. 2072 - 2083 (2016/04/09)

The article deals with conformational behaviour of 2-methoxy-2′-hydroxythiobenzanilides. The CS-NH group of these compounds preferentially adopts the Z-conformation. Entropy favours the Z-conformer over the E-conformer, whereas enthalpy slightly favours the E-conformer over the Z-conformer. The rotational barrier about the CS-NH bond was determined to be (81.5±0.4) kJ/mol. No significant rotational barrier was found on the Ar-CS and Ar-NH bonds. All experimental outcomes are compared with the results of quantum-chemical calculations.

Anion conductive aromatic copolymers from dimethylaminomethylated monomers: Synthesis, properties, and applications in alkaline fuel cells

Akiyama, Ryo,Yokota, Naoki,Nishino, Eriko,Asazawa, Koichiro,Miyatake, Kenji

, p. 4480 - 4489 (2016/07/07)

A novel series of anion conductive aromatic copolymers were synthesized from preaminated monomers (2,5-, 3,5-, or 2,4-dichloro-N,N-dimethylbenzylamine), and their properties were investigated for alkaline fuel cell applications. The targeted copolymers (QPE-bl-11a, -11b, and -11c) were synthesized via nickel-mediated Ullmann coupling polymerization, followed by quaternization and ion exchange reactions. Unlike the conventional method involving chloromethylation or bromination, this method provided copolymers with well-defined chemical structure. The hydrophilic components of the copolymers were composed of chemically stable phenylene main chain modified with high-density ammonium groups. Oligo(arylene ether sulfone ketone)s were employed as a hydrophobic block. QPE-bl-11a gave tough and bendable membranes by solution casting. The obtained membrane with the highest ion exchange capacity value (IEC = 2.47 mequiv g-1) showed high hydroxide ion conductivity (130 mS cm-1) in water at 80 °C. The QPE-bl-11a membrane showed reasonable alkaline stability in 1 M KOH aqueous solution for 1000 h at 60 °C. A platinum-free fuel cell was successfully operated with hydrazine as a fuel, the QPE-bl-11a as a membrane, and an electrode binder. The maximum power density of 380 mW cm-2 was achieved at a current density of 1020 mA cm-2 with O2.

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