Description

Chlorthal CAS NO 2136-79-0 is a selective pre-emergence herbicide belonging to the phthalate chemical class. It is valued for its effectiveness in controlling a broad spectrum of annual grasses and broadleaf weeds in various non-crop and turf settings. This compound is primarily utilized by professional agricultural and horticultural sectors for long-lasting soil residual activity. Its stability and specific mode of action make it a key component in integrated weed management programs.

Application

• Non-Crop Areas: Pre-emergent control of weeds in industrial sites, fence lines, and rights-of-way.
• Turf Management: Used on established turfgrass for lawns, golf courses, and sod farms to prevent weed germination.
• Ornamental Horticulture: Application in nurseries and around ornamental plants to maintain clean beds.
• Agricultural Land Preparation: Used in certain cropping systems as part of a pre-planting weed control regimen.
• Research & Development: Serves as a reference standard and active ingredient in agrochemical R&D.
• Formulation: A key technical material for manufacturers producing commercial herbicide formulations.

Basic Information

Product Name	Chlorthal
CAS No.	2136-79-0
Molecular Formula	C10H6Cl4O4
Molecular Weight	331.96 g/mol
Synonyms	DCPA; Chlorthal-dimethyl; Dimethyl tetrachloroterephthalate; Tetrachloroterephthalic acid dimethyl ester; DACTHAL®; Dacthal; FP 18146; 2,3,5,6-Tetrachloro-1,4-benzenedicarboxylic acid dimethyl ester
EINECS	218-359-7

Quality Control

Our Chlorthal is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. The product undergoes comprehensive analytical testing, including assay and impurity profiling, to meet technical-grade specifications. A Certificate of Analysis (COA) detailing purity, identity, and physical properties is provided with each shipment to guarantee compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Ensure the container is kept upright to prevent leakage.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Melting Point	154°C - 160°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.