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[Chemical Knowledge]：What are the upstream raw materials for phosphate and what are the downstream products?

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Phosphate has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are numerous. The following are some major phosphate upstream and downstream related products:

1. Upstream products:

(1) Phosphate rock: The main raw material of phosphate is phosphate rock. After processing, phosphate rock can produce various phosphate products.

(2) Sulfuric acid: In the process of producing phosphate, sulfuric acid is a common reactant, which reacts with phosphate rock to form phosphoric acid.

(3) Ammonia: Some phosphate production processes require the use of ammonia as a reactant, such as ammonium phosphate.

2. Downstream products:

(1) Food additives: Phosphate, as an important food additive, can be used to adjust the taste, texture and pH of food, such as disodium hydrogen phosphate, trisodium phosphate, etc.

(2) Fertilizer: Phosphate can be used as the main component of fertilizer to provide necessary phosphorus for plants and promote plant growth, such as diammonium phosphate, calcium hydrogen phosphate, etc.

(3) Detergent: Some phosphates can be used as detergent ingredients, with good decontamination and emulsification effects, such as sodium tripolyphosphate.

(4) Water treatment agent: Phosphate can also be used as a component of water treatment agent, which can adjust the pH and hardness of water quality, such as sodium hexametaphosphate.

In short, the upstream and downstream related products of phosphate are very extensive, involving many fields, such as food, agriculture, chemical industry, environmental protection and so on.

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