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Diammonium phosphate

physical science Maturity 11-13 Next article →

Diammonium phosphate is a substance used in many ways. People often call it DAP.

DAP (Diammonium Phosphate) Granules (2)
DAP (Diammonium Phosphate) Granules (2)

It is a type of salt. It forms when ammonia meets phosphoric acid.

Farmers use DAP as a fertilizer to help plants grow. It changes the pH of the soil. pH is a way to measure how acidic a liquid is. At first, the soil becomes less acidic. But over a long time, the soil becomes more acidic. DAP has a typical NPK ratio of 18-46-0. This tells us how much nitrogen and phosphorus it has.

DAP (Di-Ammonium Phosphate) in a 1 kg commercial package (2)
DAP (Di-Ammonium Phosphate) in a 1 kg commercial package (2)

DAP can also work as a fire retardant. This is a tool used to slow down fires. It makes the heat of a fire lower. It also makes more char, which is a dark residue. This can help create a firebreak to stop wildfires.

Other uses include making wine. It also helps clean sugar and makes matches better. In nature, DAP is a very rare mineral called phosphammite. It can be found near guano, which are bird droppings.

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🖼️ Images & Media (2)
File:DAP (Di-Ammonium Phosphate) in a 1 kg commercial package (2).jpg
DAP (Di-Ammonium Phosphate) in a 1 kg...
File:DAP (Diammonium Phosphate) Granules (2).jpg
DAP (Diammonium Phosphate) Granules (2).jpg
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