85 H3po4

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Phosphoric acid

85 h3po4 Description:

National standard number: 81501

ＣＡＳ: 7664-38-2

Chinese name: orthophosphate

English name: Phosphoric acid; Orthophosphoric acid

Alias: Phosphoric acid

Molecular formula: H3PO4

Molecular weight: 98.00

85 h3po4 Stability:

1. It has deliquescence. Its acidity is weaker than strong acids such as sulfuric acid, hydrochloric acid, and nitric acid, but stronger than weak acids such as acetic acid and boric acid. After being heated at high temperature of about 200 ℃, it loses water and becomes pyrophosphate, and above 300 ℃ it becomes pyrophosphate. Corrosive. Thermal decomposition produces highly toxic phosphorus oxide smoke. Exposure to strong corrosive agents releases a large amount of heat and causes sputtering.

2. Stability and stability

3. Prohibited substances include strong alkali, active metal powder, flammable or combustible materials

4. Avoid contact with hot and humid air

5. Aggregation hazards: non aggregation

6. Decomposition product phosphorus oxide

85 h3po4 Use:

Usage 1: Mainly used in phosphate industry, electroplating, polishing industry, sugar industry, compound fertilizer, etc. Used as an acidifier, yeast nutrient, etc. in the food industry

Usage 2: Mainly used for the production of chemical fertilizers, detergents, food and feed additives, flame retardants, and various phosphates

Usage 3: Commonly used as an analytical reagent

Usage 4: Used for capacity and colorimetric analysis, etc

Usage 5: In the production of silicon flat tubes and integrated circuits, aluminum film is commonly used as electrode leads, which requires photolithography of the aluminum film and the use of phosphoric acid as an acidic cleaning and corrosive agent. Can be used in combination with acetic acid.

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