Phosphoric Acid For Plants
CAS Number: 7664-38-2
Physical state: Transparent, colorless, viscous solution
EINECS:231-633-2
Chemical formula:H3PO4
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Phosphoric acid
Phosphoric acid for plants Description:
National standard number: 81501
ＣＡＳ: 7664-38-2
English name: Phosphoric acid; Orthophosphoric acid
Molecular formula: H3PO4
Molecular weight: 98.00
Melting point: 42.4 ℃/pure product Boiling point: 2
Density: Relative density (water=1) 1.87
Steam pressure: 25 ℃ (pure)
Solubility: miscible with water and soluble in ethanol
Stability: Stable
Appearance and Appearance: Pure phosphoric acid is a colorless crystal, odorless, and has a sour taste
Danger mark: 20 (acidic corrosive products)
|
ITEM |
SPECIFICATION |
|
(H3PO4) H3PO3 CaSO4 Acetic acid NaNO3 P2O5 |
85.0% ＜120mg/kg ＜1500ppm ＜10ppm ＜5ppm ＞61.5% |
Phosphoric acid for plants Use:
Phosphoric acid is widely used as an acidifying agent in a variety of pharmaceutical formulations. It is used in pharmaceutical products as part of a buffer system when combined with a phosphate salt such as sodium phosphate, monobasic or dibasic. It is also widely used in food preparations as an acidulant, flavor, and synergistic antioxidant (0.001–0.005%) and sequestrant.
Therapeutically, dilute phosphoric acid has been used welldiluted in preparations used in the treatment of nausea and vomiting. Phosphoric acid 35% gel has also been used to etch tooth enamel and to enhance delivery of drugs through the nail.
) Nanosized hydroxyapatite powder was made by combining phosphoric acid with egg shells.
Waste Disposal
Add slowly to solution of soda ash and slaked lime with stirring, then flush to sewer with large volumes of water.
Health hazard
Invasion route: inhalation, ingestion, percutaneous absorption.
Health hazard: The vapor or fog is irritating to the eyes, nose and throat.Liquids can cause skin or eye burns.
Chronic effects: nasal mucosa atrophy, nasal septum perforation.Prolonged repeated skin contact can cause skin irritation.
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)
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