Phosphoric Acid Agriculture Use

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Phosphoric acid

phosphoric acid agriculture use Description:

Phosphoric acid is colorless transparent viscous liquid, sour taste, the specific gravity of 85% phosphoric acid is 1.6850(25℃), can dissolve in water and ethanol.Its acidity is weaker than strong acids such as sulfuric acid, hydrochloric acid and nitric acid, but stronger than weak acids such as boric acid and acetic acid. It is corrosive to the skin and can destroy body tissues. Concentrated phosphoric acid has an erosion effect on porcelain when heated in porcelain, and becomes anhydrous phosphoric acid when heated to 150℃.PYROPHOSPHORICACID is heated to 300℃ and then loses one molecule of water to generate METAPHOSPHORICACID (HPO3).

phosphoric acid agriculture use Laboratory monitoring methods:

In the air: The sample is collected using a cellulose membrane filter, washed with water, and then determined by colorimetric method (NIOSH method)

Spectrometric method (NIOSH method 216)

Colorimetric method (NIOSH method S333)

Ion Chromatography (NIOSH Method 7903)

Environmental standards:

The hygiene standard for workshops in the former Soviet Union (1975) was 1mg/m3

phosphoric acid agriculture use:

As one of the plant nutrients, phosphoric acid can promote plant growth, enhance plant immunity and resistance, and is necessary for plant growth.In agricultural production, phosphate fertilizers such as potassium phosphate and diammonium phosphate play an important role in improving crop yield and quality.

Exporting countries: Phosphoric acid exports a large amount every year, with the main exporting countries and regions being Indonesia, Thailand, Japan, Pakistan, Argentina, and Hong Kong.

Toxicological data and environmental behavior:

Toxicity: It belongs to the low toxicity category.

Acute toxicity: LD501530mg/kg (oral administration in rats); 2740mg/kg (rabbit transdermal)

Irritation: Rabbit transdermal 595mg/24 hours, severe irritation; 119mg severely irritates rabbit eyes.

Hazardous characteristics: Corrosive. Thermal decomposition produces highly toxic phosphorus oxide smoke.

Combustion (decomposition) product: Phosphorus oxide.

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