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cas 139 07 1

Understanding CAS 139-07-1 A Comprehensive Overview

Chemical Abstracts Service (CAS) registry number 139-07-1 refers to a specific compound known as 2,4-dichlorophenoxyacetic acid (commonly abbreviated as 2,4-D). This herbicide has been extensively used in agriculture and horticulture since its introduction in the mid-20th century. The compound is known for its effectiveness in controlling broadleaf weeds, making it a go-to choice for many farmers and gardeners.

Chemical Properties and Structure

2,4-Dichlorophenoxyacetic acid has a molecular formula of C8H6Cl2O3 and a molar mass of approximately 221.04 g/mol. Its structure consists of a phenoxy group attached to an acetic acid moiety, with chlorine atoms positioned at the 2 and 4 locations on the benzene ring. This configuration is crucial for its herbicidal activity, as it allows the compound to mimic the action of natural plant hormones, specifically auxins. This mimicry leads to uncontrolled growth in susceptible plants, resulting in their eventual death.

Mode of Action

The herbicidal mechanism of 2,4-D involves its ability to disrupt normal plant growth processes. When 2,4-D is absorbed by a plant, it interferes with cellular functions, leading to excessive and unregulated growth. This growth effect is particularly pronounced in broadleaf plants, making 2,4-D particularly effective against weeds that compete with crops for nutrients, water, and sunlight. This selectivity allows it to be used in various cropping systems, including those featuring grass crops that are more resistant to this herbicide.

Applications and Usage

cas 139 07 1

2,4-D is widely employed in agricultural settings, particularly in the control of weeds in cereal crops, pastures, and turf management. Beyond agriculture, it finds applications in forestry, as it helps manage undesirable broadleaf species that can hinder the growth of valuable timber trees. Additionally, 2,4-D is utilized in home gardening for lawn maintenance and ornamental plant care.

The versatility of 2,4-D makes it an indispensable tool for many in the agricultural sector. However, its use is accompanied by certain considerations and potential environmental impacts. The herbicide is classified as a potential endocrine disruptor, raising concerns about its effects on wildlife and ecosystems. It is essential for users to follow application guidelines and regulations to minimize these risks.

Environmental and Health Considerations

Despite its effectiveness, the application of 2,4-D must be approached with caution. Potential health risks can arise from improper use, resulting in exposure to humans and non-target organisms. Therefore, safety measures, such as wearing protective gear during application and adhering to recommended application rates, are crucial. Additionally, ongoing research is focused on developing more sustainable and environmentally friendly alternatives to traditional herbicides like 2,4-D.

Conclusion

In summary, CAS 139-07-1, or 2,4-dichlorophenoxyacetic acid, remains a significant herbicide in agriculture and horticulture. Its unique chemical properties and mechanisms of action provide effective weed control, helping to enhance crop yields. However, like all agricultural chemicals, it necessitates responsible use and ongoing evaluation of its environmental and health implications. As the agriculture industry continues to evolve, it is critical to balance effective weed management with ecological sustainability, ensuring the health of both crops and the environment.

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