Nakaz, tablets, fumigant

Chemical Mechanism of Aluminum Phosphide

The efficacy of the "Nakaz" fumigant relies on the hydrolysis of aluminum phosphide. Upon contact with atmospheric moisture and oxygen, the tablets release phosphine gas (PH3). This process is gradual, which is a critical engineering feature: it ensures that the gas has sufficient time to diffuse through grain mass or storage crevices before reaching peak concentration. This deep penetration is essential for complete disinfestation of stored commodities.

Technical Application Requirements

Operating with a Class 1 hazardous substance requires strict adherence to environmental parameters. The effectiveness of this fumigant is entirely dependent on the structural integrity of the storage facility.

• Diffusion Dynamics: Phosphine is characterized by high permeability, allowing it to penetrate tightly packed materials and dense grain heaps.
• Thermal Limitations: The reaction rate is strictly temperature-dependent. Below +5°C, the release of phosphine gas stalls, rendering the treatment ineffective. Pre-application climate monitoring is mandatory.
• Safety and Residue Management: Post-exposure ventilation is critical. Once the site is properly aerated, the gas dissipates almost entirely, leaving no residues that would compromise the grain's quality for subsequent consumption.

Dosage and Operational Standards

The product, originated by Aquarius & Co, is designed for a single-application treatment. The dosage ranges from 2.0 to 3.0 tablets per ton/cubic meter, depending on the grain moisture content and the specific pest pressure. Practitioners must ensure that the treatment is performed by trained personnel using appropriate respiratory protection and gas monitoring equipment, given the high toxicity of the active ingredient to humans and animals.