2,3,5,6-Tetrachloropyridine CAS 2402-79-1

High-Purity 2,3,5,6-Tetrachloropyridine CAS 2402-79-1 from Aure Chemical: Stable Supply & Compliance

2,3,5,6-Tetrachloropyridine is a highly chlorinated heterocyclic compound that serves as a key precursor for several important agrochemical active ingredients. The multiple chlorine substituents allow for selective dechlorination or substitution reactions, enabling efficient synthesis routes to commercial herbicides and related products.

Basic Information

CAS No.	2402-79-1
EC No.	219-281-8
Linear Formula	C5HCl4N
Molecular Weight	216.88 g/mol
Appearance	White to off-white crystalline solid
Melting Point	90 °C (lit.)
Boiling point	251 °C (lit.)
Density	1.8 g/cm³ (lit.)
RIDADR	UN 2811 Class 6.1 / PG III
Chemical Structure

Key Applications

• Key intermediate in herbicide synthesis: Primary industrial use as a precursor for major herbicides such as triclopyr and related chloropyridine-based crop protection products through selective dechlorination and functionalization.

• Building block for agrochemical active ingredients: Employed in multi-step synthesis routes to produce various pesticide and herbicide molecules that incorporate the chlorinated pyridine core structure.

• Organic synthesis reagent for substituted pyridines: Used for controlled dechlorination and nucleophilic substitution reactions to prepare less chlorinated pyridine derivatives in fine chemical manufacturing.

• Component in specialty chemical production: Applied in the preparation of dyes, pigments, and other heterocyclic specialty chemicals requiring highly chlorinated pyridine scaffolds.

• Laboratory reagent for research and development: Utilized in academic and industrial research laboratories for exploring new synthetic methodologies and developing novel pyridine-based compounds.

Aure Chemical: Your Reliable Partner

High purity specifications and strict batch consistency: Our 2,3,5,6-Tetrachloropyridine is produced to high purity standards with rigorous quality control to ensure consistent performance in sensitive agrochemical synthesis processes.

Stable export supply supported by established logistics channels: We maintain reliable bulk inventory and coordinate specialized transport for toxic solid intermediates to customers in the agrochemical and fine chemical industries worldwide.

Complete SDS, COA and dangerous goods documentation available: Full safety data sheets, certificates of analysis, and proper toxic substance transport documentation are supplied to support regulatory compliance and smooth international procurement.

Professional technical communication and responsive service: Our technical team provides dedicated support for product handling, packaging selection, and shipment planning tailored to the requirements of hazardous chemical intermediates.

Hazards Classification

GHS Classification: Acute toxicity Category 3 (oral, dermal, inhalation) (GHS06); Skin irritation Category 2 (GHS07); Eye irritation Category 2 (GHS07).

Hazard Statements: H301 - Toxic if swallowed; H311 - Toxic in contact with skin; H331 - Toxic if inhaled; H315 - Causes skin irritation; H319 - Causes serious eye irritation.

UN Number: UN 2811; Hazard Class: 6.1; Packing Group: III.