What is DIAMMONIUM PHOSPHATE (DAP) ?
Diammonium phosphate (DAP) is the world’s most widely used phosphorus (P) fertilizer.
It is made from two common constituents in the fertilizer industry and
it is popular because of its relatively high nutrient content and its excellent physical properties.
DAP is used as fertilizer.
When used as a plant food, it temporarily raises soil pH, but in the long run after ammonium nitrification, the treatment surface becomes more acidic than before.
It is incompatible with alkaline chemicals because its ammonium ion is likely to be converted to ammonia in a high pH environment.
The average pH of the solution is 7.5-8.
DAP can also be used as a fire retardant.
This reduces the combustion temperature of the material, reduces the maximum weight loss and increases the production of residues or coal.
These have important effects on wildfires because lowering the pyrolysis temperature and increasing the amount of coal generated, this reduces the amount of fuel available and can lead to fire.
It is the largest component of some popular fire retardant products and is part of the “fire retardant” cigarette.
DAP is also used as a yeast nutrient in poultry.
As an additive in some brands of cigarettes, it is apparently known as a nicotine booster.
To avoid backlighting in matches, in sugar refining; As flux for soldering tin, copper, zinc and brass; It is also used to control the deposition of colloidal dyes soluble in alkali and insoluble in acid on wool.
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