22963-62-8

Basic information

• Product Name: 2,3,5,6-tetrachloro-4-(methylthio)pyridine
• Synonyms: 2,3,5,6-tetrachloro-4-(methylthio)pyridine;Einecs 245-354-9;Pyridine, 2,3,5,6-tetrachloro-4-(methylthio)-
• CAS NO: 22963-62-8
• Molecular Formula: C₆H₃Cl₄NS
• Molecular Weight: 262.97172
• EINECS: 245-354-9
• Mol File: 22963-62-8.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 291°Cat760mmHg
• Flash Point: 129.8°C
• Appearance: /
• Density: 1.66g/cm³
• Vapor Pressure: 0.00348mmHg at 25°C
• Refractive Index: 1.634
• CAS DataBase Reference: 2,3,5,6-tetrachloro-4-(methylthio)pyridine(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,5,6-tetrachloro-4-(methylthio)pyridine(22963-62-8)
• EPA Substance Registry System: 2,3,5,6-tetrachloro-4-(methylthio)pyridine(22963-62-8)

Safety Data

• Hazardous Substances Data: 22963-62-8(Hazardous Substances Data)

Usage

General Description

2,3,5,6-tetrachloro-4-(methylthio)pyridine, also known as tetrachloropyrimidinethiol, is a chemical compound with the molecular formula C6H2Cl4SN. It is a yellow crystalline solid that is insoluble in water but soluble in organic solvents. The compound is primarily used as a pesticide and herbicide, specifically as a pre-emergent herbicide to control weeds in agricultural and non-agricultural areas. It works by inhibiting the growth of plants and disrupting their metabolic processes. 2,3,5,6-tetrachloro-4-(methylthio)pyridine is classified as a hazardous chemical and should be handled with care to prevent potential health and environmental risks.

InChI:InChI=1/C6H3Cl4NS/c1-12-4-2(7)5(9)11-6(10)3(4)8/h1H3

Upstream product

• 2176-62-7 2,3,4,5,6-pentachloropyridine 
• 5188-07-8 sodium thiomethoxide 

Downstream Products

• 13108-52-6 2,3,5,6-tetrachloro-4-(methylsulfonyl)pyridine 

Relevant articles and documents

Preparation method of 2,3,5,6-tetrachloro-4-methylsulfonyl pyridine

The invention discloses a preparation method of 2,3,5,6-tetrachloro-4-methylsulfonyl pyridine. The preparation method comprises the following steps: dissolving pentachloropyridine in tetrahydrofuran,dropwise adding an aqueous solution of sodium methyl mercaptide at a normal temperature, and separating phases and carrying out atmospheric distillation after reaction to recover tetrahydrofuran to obtain an organic phase; and adding organic acid and a catalyst into the organic phase, dropwise adding hydrogen peroxide in stages, and carrying out cooling and crystallization after reaction to obtainthe target product 2,3,5,6-tetrachloro-4-methylsulfonyl pyridine. According to the preparation method provided by the invention, the problems of difficult product separation and purification, high production cost, large amount of three wastes, large foul smell of intermediates, expensive oxidant and the like in the prior art are solved; an green oxidant is adopted, so that secondary pollution tothe environment is not caused; the reaction conditions are optimized, so that the purity and the yield of the target product are effectively improved; moreover, oxidant raw materials are cheap and easy to obtain, the selectivity is good, the side reactions are few, the product yield is high, the reaction conditions are mild and easy to control, and the process operation is simple and easy to industrialize.