1. Overview of 2-Chlorobenzonitrile
What is 2-chlorobenzonitrile?
2-Chlorobenzonitrile (CAS 873-32-5), also known as o-Chlorobenzonitrile, is an ortho-substituted halogenated aromatic nitrile compound. It is a high-value synthetic intermediate for agrochemicals, dyes and fine chemicals.
SNOWHITE CHEMICAL CO., LTD supplies bulk agrochemical grade and customized high-specification industrial grade products to meet various synthesis demands. Our products are widely used in advanced pesticides, dye intermediates and functional materials globally.
Basic Chemical Information
Chemical Name: 2-Chlorobenzonitrile
Molecular Formula: C₇H₄ClN
Molecular Weight: 137.57g/mol
CAS No.: 873-32-5
HS Code: 29269090
Appearance: White to off-white crystalline powder
2-Chlorobenzonitrile is stable under proper storage conditions. Due to its toxicity, compliant packaging and labeling are required for international transportation.
1.1 Physical & Chemical Characteristics
Physical Form: White to off-white crystalline powder
Density: 1.18 g/cm³ (at 25°C)
Melting Point: 43–46 °C
Boiling Point: 232 °C (at atmospheric pressure)
Solubility: Freely soluble in ethanol, acetone, benzene, ether and other common organic solvents; very slightly soluble in water (≈1 g/L).
Stability: Stable under normal temperature and pressure. Incompatible with strong oxidants, strong acids and strong bases.
1.2 Functional Behavior & Mechanism
The industrial value of 2-Chlorobenzonitrile comes from the synergistic reactivity of the ortho-chlorine atom and the electron-withdrawing cyano group (–CN).
The cyano group can be converted into carboxyl, amide, tetrazole and other groups, and activates the aromatic ring for further substitution.
The ortho-chlorine atom acts as a good leaving group for nucleophilic aromatic substitution and metal-catalyzed cross-coupling reactions. The ortho-substitution structure is essential for the bioactivity of agrochemicals and the performance of advanced materials.
1.2.1 Significance in Practical Applications
Agrochemicals: Key precursor for pyrethroid insecticides (e.g., beta-cyfluthrin) and herbicides.
Dyes & Pigments: Important intermediate for high-performance dyes; the cyano group improves color fastness and stability.
Fine Chemicals & Research: Used for pharmaceutical intermediates, liquid crystal compounds, corrosion inhibitors and other specialty chemicals.
2. Custom High-Specification Grade 2-Chlorobenzonitrile
2.1 Overview
This grade offers tight control of isomers, moisture and other impurities. It is designed for advanced organic synthesis and high-value fine chemical production, supported by complete quality documents.
2.2 Mechanism in Advanced Synthesis
The ortho-chloronitrile structure provides two independent reactive sites. The chlorine atom undergoes palladium-catalyzed cross-coupling (Suzuki, Buchwald–Hartwig), while the nitrile group can be selectively hydrolyzed, reduced or used in cycloaddition reactions, enabling efficient construction of complex molecules.
2.3 Typical Applications
Mainly used for high-value pharmaceutical intermediates, liquid crystal materials and catalytic ligands. Stable high purity ensures high yield and reproducibility in multi-step synthesis.
3. Agrochemical & Industrial Grade 2-Chlorobenzonitrile
3.1 Overview
Optimized for cost-effective large-scale production of agrochemicals and industrial chemicals. It features stable reaction performance, batch consistency and reliable bulk supply.
3.2 Role in Agrochemical Synthesis
Core intermediate for modern pesticides. The chlorine and cyano groups are retained or modified to achieve the required pesticidal activity, selectivity and environmental compatibility.
3.3 Other Industrial Uses
Widely used in dye intermediates, plastic/ink pigments and functional additives. Good stability and processability adapt to standard industrial production equipment.
4. Synthesis Process
Our industrial production uses the ammoxidation of 2-chlorotoluene (mainstream and economical route). The process is optimized for high regioselectivity, yield and environmental compliance, ensuring stable and high-quality supply.
5. Quality Control & Testing
|
Analysis |
Units |
Standard |
|
Assay (GC) |
% |
≥98.5 |
|
Appearance |
- |
White to off-white crystal/powder |
|
Melting Point |
°C |
43-45 |
|
Moisture (KF) |
% |
≤0.5 |
|
Related Substances (HPLC) |
% |
≤1.0 |
|
Conclusion |
Qualified |
|
6. Packaging, Storage & Safety Information
6.1 Packaging Options
Standard: 25 kg fiber drum or 200 kg steel drum.
Custom packaging (including small R&D packs) is available on request.
6.2 Storage Recommendations
Store in a cool, dry, well-ventilated area away from heat, sparks and open flames.
Keep containers tightly closed to prevent moisture and contamination.
Store separately from strong oxidants, strong acids and strong bases.
6.3 Safety Information
DANGER: Toxic if swallowed, inhaled or in contact with skin. Causes serious eye irritation.
Personnel must wear chemical-resistant gloves, protective clothing, safety goggles and face protection.
Use only in well-ventilated areas. Refer to the latest SDS for detailed handling, first aid, fire fighting and disposal instructions.
7. Supply & Technical Support
SNOWHITE CHEMICAL CO., LTD provides reliable global supply with:
Strict batch-to-batch quality control
Customizable purity and packaging
Stable large-scale capacity and flexible delivery
Complete documents: COA, SDS and TDS
Contact Us
Contact SNOWHITE CHEMICAL CO.,LTD now to get COA, free samples and the latest quotation.
Email: shirley@snowhitechem.com
Phone: +86-25-56215758
WhatsApp：+86-13776524331
