Ammonium sulfate, referred to as ammonium sulfate, is an inorganic ammonium salt compound with the chemical formula (NH₄)SSO₄ and a relative molecular weight of 132.14. It is a kind of industrial raw material and agricultural fertilizer with strong stability, no volatility and high cost performance.Industrial grade ammonium sulfate is a white crystalline powder or particle with no obvious odor, stable properties at room temperature, soluble in water, insoluble in organic solvents such as ethanol and acetone, and has the characteristics of weakly acidic, non-volatile, non-corrosive (low concentration), and low toxicity. It is a basic raw material commonly used in many fields such as chemical industry, agriculture, food (special grade), medicine, etc.Its boiling point is 280℃ (decomposition), there is no clear flash point, and the freezing point is 235℃. It is extremely stable when sealed and dry at room temperature and pressure. It is not easy to decompose and absorb moisture. At high temperature (≥280℃), it will decompose to produce ammonia and sulfuric acid, which are almost non-toxic (skin contact is non-irritating, it is strictly prohibited to eat industrial-grade products, and long-term inhalation of dust may cause mild respiratory discomfort).It is strictly prohibited to use industrial-grade ammonium sulfate for food and pharmaceutical consumption/external use (food grade and pharmaceutical grade must meet exclusive standards and be strictly controlled). It must be sealed and stored in a cool, ventilated, dry and dark special warehouse, away from high temperature and fire sources, avoid mixing with alkaline substances, prevent decomposition, leakage, and ensure storage safety. At the same time, the content of heavy metal impurities must be strictly controlled, in line with GB/T 535-2020 "Fertilizer grade Ammonium Sulfate" and other related standards.It is mainly used as agricultural fertilizers, industrial raw materials, and buffers. It is widely used in agricultural fertilization, chemical synthesis, pharmaceutical intermediates, wastewater treatment and other processes. It strictly follows the relevant standards of industrial chemicals and corresponding fields, and fits the current development trend of “green, refined, safe and large-scale” in the chemical industry. The core highlights its strong stability, non-volatile, both nitrogen and sulfur nutrition (agricultural field), and controllable impurities, focusing on strict storage control and heavy metal impurity control requirements.

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Application Description

1. It is used as a core nitrogen-sulfur compound fertilizer in the agricultural field. It is mainly used for fertilizing rice, wheat, corn, cotton, vegetables and other crops. It is especially suitable for sulfur-loving crops such as tobacco, tea, and fruit trees. It can be directly sprinkled, ditched or sprayed with water. It has the characteristics of strong stability, fast effect, easy absorption, and both nitrogen and sulfur nutrients. It can quickly supplement the nitrogen and sulfur elements needed for crop growth, promote lush branches and leaves, increase yield and quality, adapt to the needs of large-scale agricultural cultivation, and meet the development trend of green agriculture. After decomposition, there are no harmful residues, and it will not pollute the soil and water bodies. It can be used with most farm fertilizers and compound fertilizers. It is used in concert, while strictly controlling the content of heavy metals, meeting the safety limit standards of fertilizers, and reducing agricultural planting costs.
2. It is used as a chemical raw material and flame retardant in the industrial field. It is used in the production of chemical products such as ammonium alum, ammonium chloride, and ammonium ferrous sulfate. It can be used as a flame retardant in the production of plastics, rubber and other products to improve the flame retardant properties of products. At the same time, it can be used in industrial wastewater treatment to remove heavy metal ions and fluorine ions from wastewater, improve water quality, adapt to the large-scale and refined development needs of the chemical industry, strictly follow the safety standards of the chemical industry, and it is strictly prohibited to use industrial-grade ammonium sulfate instead of food-grade and pharmaceutical-grade products for related fields, while avoiding its dust entering the atmosphere and reducing the potential contribution of PM2.5.
3. In the food field, it is used as a food additive and fermentation aid (food grade), used in the fermentation of bread, pastries and other foods, regulates the pH value of the fermentation system, promotes yeast growth and reproduction, and can be used as a dough improver to improve food taste and quality. There is no residue after decomposition, does not affect food flavor and safety, adapts to the needs of large-scale production in the food industry, fits the trend of green upgrading in the food industry, strictly controls the purity and impurity content of food-grade products, and meets food additive standards.
4. In the pharmaceutical field, it is used as a pharmaceutical intermediate and buffer (pharmaceutical grade), used in drug synthesis, preparation regulation and other processes, as an intermediate to participate in the molecular structure of drugs, as a buffer to adjust the pH value of pharmaceutical preparations, improve drug stability and efficacy, adapt to the refined production needs of the pharmaceutical industry, strictly follow the safety standards of the pharmaceutical industry, it is strictly prohibited to replace it with industrial-grade ammonium sulfate, and it is strictly prohibited to be used in the field of external use and oral administration of medicine in violation of regulations.
5. In the field of environmental protection, it is used as a wastewater treatment agent and an auxiliary agent for flue gas desulfurization. It is used in industrial wastewater neutralization, flue gas desulfurization and other processes. As a wastewater treatment agent, it can remove heavy metal ions and fluorine ions from wastewater and purify water quality. As an auxiliary agent for flue gas desulfurization, it can improve the efficiency of desulfurization and reduce sulfur dioxide emissions. It is suitable for the large-scale environmental protection treatment needs of power plants and chemical enterprises. In line with the development trend of the environmental protection treatment industry, it helps enterprises achieve environmental protection standards and emissions, while reducing dust volatilization in the production process and reducing the impact on the atmospheric environment.
6. Used as electroplating additives and dye additives in other industrial fields, it can be used as an additive to electroplating solution in the electroplating industry to improve the uniformity and gloss of the electroplating layer and improve the electroplating effect; in the dye industry, it can be used as a dye additive to adjust the pH value of the dye solution, improve the dyeing uniformity, and improve the dyeing effect of fabrics. It is suitable for large-scale production in the electroplating and dye industries and fits the trend of green upgrading in the industry; it can also be used for laboratory analysis, as a chemical reagent to assist in testing and adjusting the pH value, and can also be used in the manufacture of ammonium alum and other products.
7. It is used as a feed additive (special grade) in other industrial fields, and can be used as a special buffer and nutritional supplement in the feed industry to regulate the pH of feed, promote the digestion and absorption of livestock and poultry, supplement a small amount of nitrogen and sulfur, adapt to the large-scale production needs of the feed industry, and meet the trend of green upgrading of the feed industry; it can also be used in the cement industry as a cement additive to adjust the cement condensation time and improve cement performance.
8. Note: This product is a white crystalline powder or particle with no obvious odor and low toxicity. It is strictly prohibited to eat industrial-grade products. Long-term inhalation of dust may cause mild respiratory discomfort; rinse with water after skin contact, and rinse with plenty of water immediately after eye contact for more than 15 minutes, and seek medical attention if necessary; when storing and using, you need to wear dust masks, gloves, goggles and other protective equipment to keep the operating environment well ventilated (equipped with ventilation and dust recovery equipment); it is strictly prohibited to mix with alkaline substances and high-temperature fire sources; waste disposal must follow hazardous waste disposal standards and entrust qualified units to deal with it to avoid decomposition. Ammonia and sulfuric acid pollute the environment and endanger human health; mixing of different grades of ammonium sulfate is strictly prohibited, and it is strictly prohibited to use industrial-grade products in food, medicine, feed and other fields in direct contact with humans and animals in violation of regulations. Storage specifications are strictly followed during use to prevent large amounts of dust from volatilizing, and the content of heavy metal impurities is strictly controlled to comply with relevant industry standards.