The appearance of potassium sulfate is white crystal or colored crystal particles, which is characterized by low moisture absorption, is not easy to agglomerate when stored, and is easily soluble in water.
The appearance of potassium chloride is white or light yellow crystal, sometimes containing iron salt is red, soluble in water, is a high concentration of quick-acting potassium fertilizer.
To correctly distinguish the two kinds of fertilizers, first of all, see if the appearance meets the above explanation; the second is to see the bag marking implementation standard, the HG/T3279-1990 issued by the Ministry of Chemical Industry, and the national standard GB6549-86 implemented by potassium chloride. So in terms of process, the detection method is different.
Ammonium nitrate has a white appearance and no visible impurities, which may be yellowish. The total nitrogen content is ≥34.4%. It has strong hygroscopicity and agglomeration, and a large amount of ammonium nitrate is easily decomposed by heat. Put the chemical fertilizer sample directly on the red iron plate, melt quickly, and appear boiling. At the end of melting, there is a fire, a lot of white smoke, ammonia smell and firecracker smell. It is ammonium nitrate.
Zinc Fortifier,Food Additive Zinc Sulfate,Zinc Sulfate Heptahydrate,Zinc Sulfate Monohydrate
LIANYUNGANGLONGTAIWEI FOOD INGREDIENTS CO.,LTD. , https://www.longtaiweifood.com