Diammonium phosphate, also known as diammonium phosphate, diammonium phosphate (DAP), is a compound fertilizer containing two nutrients of nitrogen and phosphorus, which is grayish white or dark gray particles. Diammonium phosphate is easily soluble in water and insoluble in ethanol; it has certain hygroscopicity and is easily decomposed in humid air to volatilize ammonia into ammonium dihydrogen phosphate. Fertilizer introduction Diammonium phosphate, also known as diammonium hydrogen phosphate or ammonium hydrogen phosphate, is a white crystal with a molecular formula of (NH4)2HPO4, soluble in water and heated to 155 ° C for decomposition, but it is also possible to gradually explain at room temperature. Ammonia gas is evolved to form ammonium dihydrogen phosphate. The aqueous solution is weakly alkaline, pH 8.0. Product specifications are: 64% (N18: P2O546), 61% (N17: P2O545), 57% (N15: P2O542). In order to increase the storage resistance, some products are added with a package during the production process to make the appearance of the product brown or yellow. Functional use Diammonium phosphate is a high-concentration quick-acting fertilizer suitable for various crops and soils. It is especially suitable for crops that require nitrogen and phosphorus. It can be used as base fertilizer or top dressing. Physical properties of the product: This product is easily soluble in water. It has less solid content after dissolution. It is suitable for the needs of various crops for nitrogen and phosphorus. It is especially suitable for base fertilizer, seed fertilizer and top dressing in areas with drought and less rain. Application: High performance nitrogen and phosphorus binary fertilizer. Common specifications: physical neutral fertilizer, can be applied to any soil and most crops, especially suitable for ammonium-demanding phosphorus crops, as base fertilizer or top dressing, should be applied deep. Used as a curing agent for urea-formaldehyde resin adhesive, formulated into a 20% aqueous solution, the curing rate is the slowest. Also used as an additive flame retardant. If a small amount of DAP is added to the natural rubber emulsion, the magnesium ion in the latex can be effectively eliminated, and the tensile strength of the natural latex after vulcanization is not reduced. Application: It has good miscibility with urea, ammonium nitrate and ammonium chloride. Because it does not contain potassium, it should be applied in combination with potassium fertilizer (potassium chloride and potassium sulfate). The main components of the product: (NH4) 2HPO4 Crop name fertilization method fertilization effect Wheat based fertilizer 40-50 kg / mu; seedling period, tillering period 15-20 kg / mu, with urea 10-15 kg / mu strong seedlings, drought resistance, lodging resistance, increase the number of spikes, full grain Rice base fertilizer 40-50 kg/mu; topdressing period 10-15 kg/mu, with urea application 10-15 kg/mu to promote tillering, prevent rotten roots, increase spike number, grain number per spike, full grain Maize base fertilizer 35-45 kg / mu; seedling period, jointing period 20-25 kg / mu, with urea 15-20 kg / mu strong seedlings, drought resistance, lodging resistance, increase the number of corn cobs, full grain 40-50 kg/mu of cotton base fertilizer; 10-15 kg/mu in seedling stage and bud and boll period, 20 kg/mu of urea added to increase the number of bolls per plant, reduce buds and fall off, improve cotton fiber quality Peanuts are applied 20-30 kg/mu as base fertilizer, 10-15 kg/mu in flowering and flowering period to increase the number of pods per plant, strong seeds and improve quality. Soybean application 30-35 kg / mu for base fertilizer; flowering period, pod filling period 10-20 kg / mu increase the number of single pods, strong seeds 40-60 kg/mu of sorghum base fertilizer; 20 kg/mu of strong seeds in the seedling stage, increasing the number of grains per ear Potato base fertilizer 40-50 kg / mu; bud period 20-30 kg / mu large, high starch content 50-60 kg/mu of melon and vegetable base fertilizer, 20-30 kg/mu of urea, and reduce the pests and diseases by two applications to increase yield Leafy vegetables are applied 50-60 kg/mu as base fertilizer, and 20-30 kg/mu of urea is applied. The application of leaf green is large, and the yield is high. 50-60 kg/mu of watermelon base fertilizer; 20-25 kg/mu for post-expanding melon, with a small amount of farmyard fertilizer to resist disease, watermelon is big, sweet Fruit trees (apples, pears, etc.) Total 2-3 kg/plant throughout the year, applied in two to three times, large, sweet, high yield The grape base fertilizer is 0.5-1 kg/plant, which is fertilized by the ring ditch method. After the fruit is hung, the potassium dihydrogen phosphate is added 0.5-1 kg/plant, the ear is large, the taste is sweet, and the yield is high. This article URL: DAP general knowledge of the use of diammonium phosphate in different crops Calcium carbonate is a kind of inorganic compounds, chemical formula optimization for CaCO ₃, commonly known as grey stone, limestone, limestone, marble, etc. Calcium carbonate is neutral, basically insoluble in water, soluble in hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of animal bones or shells. Calcium carbonate is also an important building material and is widely used in industry. Calcium Carbonate,Omya Calcium Carbonate,Imerys Calcium Carbonate,Calcium Carbonate For Breathable Film Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com