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Ammonium Sulfate CAS 7783-20-2

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  • Appearance: White powder
  • Assay: 99. 0%min
  • Stock: In stock
  • Sample: Available
  • Zhishang Chemical: Ammonium Sulfate Supplier & Manufacturer

Basic Info

What is Ammonium Sulfate?

Ammonium sulfate, also known as ammonium sulphate, is the earliest nitrogen plant food produced and also used in your home as well as abroad. It is generally considered as a basic nitrogen plant food, with a nitrogen web content between 20% as well as 30%. Ammonium sulfate is a salt of solid acid and weak base, as well as its aqueous remedy is acidic. Ammonium sulfate is a nitrogen plant food and an acidic fertilizer in not natural plant foods. Long-lasting solitary usage will certainly cause dirt acidification and also solidifying, and needs to be improved. Ammonium sulfate can not be made use of in the manufacturing of natural fertilizers. Moreover, acidic plant foods can not be utilized along with alkaline plant foods, as double hydrolysis can conveniently lead to loss of fertilizer efficiency.

In the 1960s, ammonium sulfate was the primary variety of nitrogen fertilizer as well as one of the main sources of sulfur, a nutrient element for crops. It was first neutralized with ammonia as well as sulfuric acid, however later on the proportion of spin-off ammonium sulfate is raising, as well as currently it basically comes from other industry byproducts, such as coking market, caprolactam, sulfuric acid tail gas desulfurization, nuclear power plant desulfurization, acrylonitrile and Methyl methacrylate, zinc oxide and other by-products. The byproduct ammonium sulfate adheres to the principle of “utilizing waste to treat waste”, recognizes the detailed utilization of waste, as well as achieves the purpose of power saving and emission decrease. Especially with the technical advancement of the ammonia desulfurization task, the output of ammonium sulfate, a spin-off of desulfurization in nuclear power plant, will certainly raise considerably in the future.

Pure ammonium sulfate is a white crystal, as well as it begins to decay into ammonia as well as ammonium bisulfate when it is heated up to 100 ° C. ethanol and acetone. Ammonium sulfate is a from a physical standpoint acidic quick-acting nitrogen plant food, which is typically ideal for wheat, corn, rice, cotton, pleasant potato, hemp, fruit trees, vegetables as well as various other plants.

For dirt, ammonium sulfate is most appropriate for neutral and alkaline dirts, yet except acidic dirts. It is additionally utilized as analytical reagent (precipitant, covering up representative), sustaining electrolyte in electrochemical analysis, microbial society tool and ammonium salt prep work.

Ammonium Sulfate Uses in Printing and Dyeing

  • As ground color resist for reactive dyes
    The most widely used resist for reactive dye ground color resist printing is acid resist. Because reactive dyes contain active groups, they can bond with the hydroxyl group (-OH) on the cotton fiber molecules. However, the bonding of dyestuffs to the bases on cotton fibers must be carried out in an alkaline medium. The commonly used alkaline agent is baking soda. When the fabric is pad-dyeed with reactive dyes, baking soda is added to the dye solution. During the drying and steaming process, baking soda is decomposed by heating (above 90°C) to form soda ash. At this time, the pH of the medium is From the original 8.4 to about 10.5-11, the binding force between the dye and cotton fiber is the largest. Therefore, under acidic conditions, dyes and cotton fibers do not bond, so that the purpose of anti-dyeing can be achieved. Therefore, printing the anti-white paste of acid agent or acid release agent on the white cloth can neutralize the alkali agent that the reactive dye depends on to fix the color, and prevent the dye from combining with the cotton fiber to lose color. There are many kinds of acid agents and acid release agents that can be applied, including ammonium chloride, ammonium sulfate, aluminum sulfate, tartaric acid, etc., and ammonium sulfate is the most commonly used.
  • As an auxiliary agent for acid dyes in hair dyeing
    Several kinds of acid dyes dye wool, and the color is often difficult to be uniform. If an appropriate amount of ammonium sulfate is added to the dyeing solution as a dyeing aid, this difficulty can be overcome.

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Application of Ammonium Sulfate

The main use of ammonium sulfate is as plant food in alkaline soil. In the soil, ammonium ions are launched as well as create a percentage of acid, minimizing the pH balance of the dirt, and supplying crucial nitrogen for plant growth. The major disadvantage of using ammonium sulfate is that its nitrogen content is less than that of ammonium nitrate, which will boost the transportation expense.

It is also utilized as an agricultural spray aide for water-soluble pesticides, herbicides and fungicides. There, its feature is to incorporate iron and also calcium cations that exist in well water and plant cells. As an aide of 2,4-D (amine), glyphosate and ammonium glyphosate herbicides, it is especially effective.

Production Methods of Ammonium Sulfate

  1. Neutralization method: ammonia and sulfuric acid react in a saturated crystallizer (under vacuum or normal pressure) to form ammonium sulfate crystals, which are separated by a centrifuge, and the filter cake is dried to obtain the product, and the mother liquor is returned to the saturated crystallizer. The reaction is a strong exothermic reaction, and the heat of reaction is used to evaporate the water brought in by sulfuric acid or intentionally added to control the temperature. In the normal pressure saturated crystallizer, a large amount of air can be blown into the reaction material to remove the heat of reaction. The method of washing coke oven gas or ammonia in coal gas with sulfuric acid to prepare ammonium sulfate also belongs to the neutralization method.
  2. Gypsum method: Natural gypsum or by-product gypsum reacts with ammonium carbonate solution to generate calcium carbonate precipitate and ammonium sulfate solution, and the calcium carbonate is separated by filtration. The ammonium sulfate solution is evaporated and crystallized, filtered with a centrifuge, and the filter cake is dried to obtain the product, and the mother liquor is returned to the evaporator. In areas that lack sulfur resources but have natural or by-product gypsum resources, this method can solve the sulfur resources in the production of ammonium sulfate, and the by-product calcium carbonate can be used to produce cement. The disadvantage is high energy consumption. If the by-produced ammonium sulfate mother liquor in the production of caprolactam etc. needs to be made into a solid product, the method is the same as the latter process of this method.
    After filtration, separation and concentration, the crystal product can be obtained. The by-products can be used to make cement. The disadvantage of this method is high energy consumption.
  3. Recover sulfur dioxide from the tail gas produced by sulfuric acid to produce ammonium sulfate: wash the tail gas containing sulfur dioxide with ammonia water to generate ammonium sulfite and ammonium bisulfite solution, then acidify the solution with sulfuric acid, and liquefy the released sulfur dioxide to prepare liquid sulfur dioxide product, or return to the sulfuric acid factory to make acid, and the remaining concentrated ammonium sulfate solution is evaporated and crystallized to dry the product.

Reference

Ammonium Sulfate Suppliers and Manufacturers

As a ammonium sulfate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best ammonium sulfate raw materials to customers all over the world.

Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.

If you have a demand for ammonium sulfate and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.

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