2,4-D/2,4-Dichlorophenoxyacetic acid/Amidox；B-Selektonon/U-5043/Crotilin

English Name: 2,4-D; 2,4-Dichlorophenoxyacetic acid； Amidox； B-Selektonon； U-5043； Crotilin

Other names: 2,4-drop; 2,4-D acid; 2,4-dichlorophenoxyacetic acid

CAS No.: 94-75-7

C8H6Cl2O3=221.04

Grade: CP

Content: ≥ 98.0%

Melting point: 138 ～ 141 ℃

Ethanol dissolution test: acceptable

Loss on drying: ≤ 1.0%

 Physicochemical properties : white goods light yellow crystal. Soluble in ethanol, ether, acetone and other organic solvents, almost insoluble in water. Relative density (d304) 1.565. Melting point 138 ℃. Boiling point 160 ℃ (53.33pa). Moderate toxicity, 50% lethal dose (rat, oral) 375mg / kg. Carcinogenic possibility

Purpose: biochemical research. Herbicides, plant growth agents, organic microanalysis standards for the determination of carbon and hydrogen. 2,4-D is a representative synthetic plant growth hormone (auxin). It showed high activity in common quantitative method of plant growth hormone, but its effect was rather low in oat elongation test using standard quantitative method of plant growth hormone. When treated with chromic acid, it is purple and can be used for colorimetric quantification. This substance is widely used as a herbicide and an agent to prevent early fruit shedding. When it is scattered into the soil, it can be decomposed by bacteria such as gram-negative cocci and Flavobacterium aquatile.

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