1917-96-0

Basic information

• Product Name: heptyl 2,4-dichlorophenoxyacetate
• Synonyms: heptyl 2,4-dichlorophenoxyacetate;(2,4-Dichlorophenoxy)acetic acid heptyl ester
• CAS NO: 1917-96-0
• Molecular Formula: C₁₅H₂₀Cl₂O₃
• Molecular Weight: 319.2235
• EINECS: 217-634-0
• Mol File: 1917-96-0.mol

Chemical Properties

• Boiling Point: 434.72°C (rough estimate)
• Flash Point: 138°C
• Appearance: /
• Density: 1.1743 (rough estimate)
• Vapor Pressure: 3.24E-06mmHg at 25°C
• Refractive Index: 1.5810 (estimate)
• CAS DataBase Reference: heptyl 2,4-dichlorophenoxyacetate(CAS DataBase Reference)
• NIST Chemistry Reference: heptyl 2,4-dichlorophenoxyacetate(1917-96-0)
• EPA Substance Registry System: heptyl 2,4-dichlorophenoxyacetate(1917-96-0)

Safety Data

• Hazardous Substances Data: 1917-96-0(Hazardous Substances Data)

Usage

Uses

Used in Agriculture:
Heptyl 2,4-dichlorophenoxyacetate is used as a herbicide for controlling broadleaf weeds in various crops such as wheat, corn, and rice. Its application helps protect these crops from the competition and damage caused by unwanted weeds, ensuring healthier growth and higher yields.
However, due to its potential to cause harm to non-target plants and the environment, it is crucial to use heptyl 2,4-dichlorophenoxyacetate with caution and in accordance with specified guidelines and regulations. This ensures the safety of the environment and the effectiveness of the chemical in achieving its intended purpose.

InChI:InChI=1/C15H20Cl2O3/c1-2-3-4-5-6-9-19-15(18)11-20-14-8-7-12(16)10-13(14)17/h7-8,10H,2-6,9,11H2,1H3

Upstream product

• 111-70-6 n-heptan1ol 
• 5426-48-2 n-heptyl glycolate 
• 120-82-1 1,2,4-Trichlorobenzene 
• 34589-22-5 n-heptyl chloroacetate 
• 79239-83-1 n-heptyl phenoxyacetate 
• 108-95-2 phenol 

Downstream Products

• 2702-72-9 sodium 2,4-dichlorophenoxyacetate 

Relevant articles and documents

Preparation method of 2,4-dichlorophenoxyacetic acid and salt thereof

The invention provides a preparation method of 2,4-dichlorophenoxyacetic acid and a salt thereof, wherein the preparation method includes the following steps: S1) carrying out a reaction of phenol andchloracetic ester under alkaline conditions to obtain phenoxyacetic ester; S2) carrying out selective chlorination reaction of the phenoxyacetic ester with a chlorinating agent under the action of acatalyst A and a catalyst B to obtain 2,4-dichlorophenoxyacetic ester, wherein the catalyst A is Lewis acid, and the catalyst B is C5-22 thioethers, thiazoles, isothiazoles and thiophenes or halogenated derivatives thereof; and S3) carrying out hydrolysis reaction of 2,4-dichlorophenoxyacetic ester under acidic conditions to obtain 2,4-dichlorophenoxyacetic acid; or after 2,4-dichlorophenoxyaceticester is obtained, carrying out an alkaline hydrolysis reaction with an alkaline compound to obtain 2,4-dichlorophenoxyacetate. The production and use of 2,4-dichlorophenol with unpleasant odor are avoided, the production of dioxins is eliminated, the yield of products is improved, and the output of three wastes is greatly reduced.

Preparation method of chlorophenoxyacetic ester

The invention provides a preparation method of chlorophenoxyacetic ester, wherein the preparation method comprises the following steps: A) carrying out reaction of glycolic acid and alcohol in tolueneto obtain glycolic ester; B) carrying out reaction of glycolic ester and metal alkoxide to obtain a metal salt of glycolic ester; and C) carrying out reaction of the metal salt of glycolic ester andchlorobenzene to obtain the chlorophenoxyacetic ester. The chlorophenoxyacetic ester is synthesized by condensation of chlorobenzene with the metal salt of glycolic ester, the use of chlorophenol withunpleasant odor is effectively avoided, the production of highly toxic dioxins is eliminated, and the product quality and the operating environment of the production site are greatly improved. Motherliquor containing effective ingredients cannot be produced, so the loss of effective ingredients is effectively avoided and the yield of the product is improved.

Preparation method of phenoxycarboxylic acid choline salt

The invention provides a preparation method of a phenoxycarboxylic acid choline salt, wherein the preparation method includes the steps: S1, carrying out condensation reaction of phenol or o-cresol with chlorocarboxylic ester in the presence of alkaline substances to obtain phenoxycarboxylic ester; S2, carrying out selective chlorination of the phenoxycarboxylic ester with a chlorinating agent inthe presence of a first catalyst and a second catalyst to obtain chlorobenzoxycarboxylic ester; and S3, after reaction of trimethylamine with ethylene oxide, adding the chlorophenoxycarboxylic acid ester, and carrying out alkaline hydrolysis reaction to obtain the phenoxycarboxylic acid choline salt. Compared with a conventional synthesis technology, the preparation method effectively avoids the production and use of chlorophenols with unpleasant odor, radically eliminates the production of highly toxic dioxins, and greatly improves the product quality and the operation environment of the production site; with phenol as the raw material, through condensation, selective chlorination and alkaline hydrolysis, the high-quality phenoxycarboxylic acid choline salt is obtained, the loss of effective ingredients is effectively avoided and the yield of the product is increased.