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[Chemical Knowledge]:What are the upstream raw materials for dilute phosphoric acid? What do the downstream products contain?

Dilute phosphoric acid plays an important role in the field of chemical production raw materials, and its upstream and downstream related products are extensive. The following are some upstream and downstream related products related to dilute phosphoric acid:

upstream products:

1. Phosphate rock: Phosphate rock is the main raw material of dilute phosphoric acid, and the phosphorus element in phosphate rock is converted into dilute phosphoric acid through chemical reaction.

2. Sulfuric acid: Sulfuric acid is used as a catalyst in the production of dilute phosphoric acid to promote the conversion of phosphorus in phosphate rock into dilute phosphoric acid.

downstream products:

1. phosphate fertilizer: dilute phosphoric acid is an important raw material for the production of phosphate fertilizer, combined with calcium, magnesium and other elements to form different types of phosphate fertilizer for agricultural production.

2. Phosphate: Dilute phosphoric acid can react with various metal ions to generate phosphate, which is used in the production of food additives, water treatment agents, etc.

3. Phosphate ester: Dilute phosphoric acid can react with alcohol to generate phosphate ester, which is used as a plasticizer and flame retardant for plastics, rubber, etc.

4. Phosphoric anhydride: Dilute phosphoric acid can be further dehydrated to generate phosphoric anhydride, which is used to produce organic synthesis intermediates such as drugs and dyes.

In short, dilute phosphoric acid has a wide range of upstream and downstream related products in the field of chemical production raw materials, and plays an important role in agriculture, food, plastics, rubber, medicine and other fields.
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