What Is Ammonium Chloride?

Ammonium chloride, referred to as ammonium chloride. Refers to the ammonium salt of hydrochloric acid, mostly a by-product of the alkali industry. It contains 24% to 26% nitrogen and is white or slightly yellow square or octahedral small crystals. There are two forms of powder and granular. Granular ammonium chloride is not easy to absorb moisture and is easy to store. Basic fertilizer for the production of complex fertilizers. It is a physiological acid fertilizer. Because it contains more chlorine, it should not be applied on acid soil and saline-alkali soil. It should not be used as seed fertilizer, seedling field fertilizer or foliar fertilizer. ) On the application. Ammonium chloride is highly effective and stable in paddy fields, because C1 can not only inhibit paddy nitrification, but also facilitate the formation of rice stalk fibers, increase toughness, and reduce rice lodging and pests and diseases. ^[1]

The aqueous solution is weakly acidic, and the acidity increases when heated. For ferrous and other metals

Chemical formula: NH ₄ Cl

Quality indicators of industrial ammonium chloride:

Index name First-class product Second-class product

Mass fraction of ammonium chloride (NH ₄ Cl) (based on dry basis) /% 99.3 99.0

Moisture /% 1.0 1.0

Sodium chloride (based on dry basis) /% 0.2 0.3

Water insoluble matter /% 0.02 0.03

Sulfate /% 0.02 0.04

pH value 4.2 5.8 4.2 5.8

The hydrogen chloride gas is introduced from the bottom of the turbulent absorption tower, and is contacted with the circulating mother liquor sprayed on the top of the tower, and the saturated ammonium chloride mother liquor generated into the reactor flows into

Pretreatment with sodium hydroxide solution, the released ammonia gas is recovered for use, and the remaining treatment solution is diluted with water to a predetermined allowable concentration, and then is harmlessly treated. ^[2]

Ammonium chloride is an ionic compound that is easily soluble in water and ionizes ammonium and chloride in water. in

It should be stored in a cool, ventilated and dry warehouse, avoiding moisture. Avoid co-storage with acids and alkalis. Protect from rain and direct sunlight during transportation. Handle with care when loading and unloading to prevent damage to the packaging. In case of fire, use water, sand, carbon dioxide fire extinguishers to extinguish.

Technical conditions: Implementation of national standards of the People's Republic of China.

GB / T2946-2008 (August 1, 2009) has been implemented. The products are divided into two categories: industrial ammonium chloride and agricultural ammonium chloride. Among them, the first-class quality standards of industrial ammonium chloride are as follows:

Appearance: white crystal

Ammonium chloride content (based on dry basis)> 99.3%

Moisture content <0.7%

Residue on ignition <0.4%

Iron content <0.001%

Heavy metal content (as Pb) <0.0005%

Sulfate content (as SO ₄ ^2- ) <0.05%

PH value: 4.0-5.8

Category salt

Technical grade ammonium chloride 99.5%

Chemical name: Industrial ammonium chloride

English name: AMMONIUM CHLORIDE

Molecular formula: NH ₄ Cl

Molecular weight: 53.49

Ammonium chloride can be used as a nitrogen fertilizer in agriculture. Its mechanism of action is similar to that of ammonium sulfate, but the soil acidification caused by ammonium chloride is more serious than ammonium sulfate. Can be used as base fertilizer, topdressing fertilizer, can not be used as seed fertilizer. In addition, it should not be applied in large quantities to chlorine-tolerant crops (tobacco, sugarcane, potato, etc.).