suppliers of 2-amino-5-nitrothiazole are white or light red crystalline powder, soluble in alcohol, ether, benzene, trichloromethane and petroleum ether. Dissolved in water, the solution appears red when it meets ferrite. Melting point range :70-72*C; Moisture :< 0.50%; Free chlorine :< 0.001%; Sulfur. The following manufacturers of 2-amino-5-nitrothiazole suppliers will introduce the basic knowledge and uses of 2-amino-5-nitrothiazole suppliers.

Acid salts :< 0.005%; Heavy Metal :< 0.005%

suppliers of 2-amino-5-nitrothiazole are a class of products prepared by the combined reaction of pyridine. Common ones include 2,2'-2-amino-5-nitrothiazole suppliers and 4,4'-2-amino-5-nitrothiazole suppliers, which are commonly used for the verification of ferrous, silver, cadmium and molybdenum. As a REDOX indicator.

Preparation method: It is obtained by the reaction of pyridine and ferric chloride. Mixing 70g anhydrous pyridine with 13g anhydrous ferric chloride was heated in a sealed tube at 300℃ for about 35h. After cooling, the reactants solidify into red-black crystals. Open the sealing tube and wash out the red-black solution of the solid with a little hot water. The oily impurity is removed by ether extraction. After neutralization with sodium bicarbonate, excess pyridine is removed by steam heating. The mixture is then adjusted to a strong base and steam out 2,2'-2-amino-5-nitrothiazole suppliers. After acidification, the product is evaporated and concentrated, and then sodium hydroxide is added. The product is extracted with ether, and the ether is removed to obtain crude product. The crude product is recrystallized by ethanol and the pure product is obtained by decolorization of activated carbon. In addition, the product can also be prepared by the reaction of α-methylpyridine with potassium permanganate after purification.

Mixing anhydrous pyridine with anhydrous ferric chloride, heating reaction, cooling solidification to obtain red black crystal. Excess pyridine is removed by steam heating. Steam out 2,2'-2-amino-5-nitrothiazole suppliers. Add sodium hydroxide with ether as solvent, remove ether, get crude product. Decolorization with iron-free activated carbon was filtered to obtain white blade-like crystal, which was suppliers of pure product 2,2'-2-amino-5-nitrothiazole. [1]

Use: Chemical copper plating additives for 2-amino-5-nitrothiazole suppliers, which can effectively control the deposition rate of copper and avoid the formation of cuprous oxide.

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