Keywords

• High purity 1304-85-4
• free sample 1304-85-4
• Bismuth subnitrate supplied by China

Quick Details

• ProName: High purity 1304-85-4 free sample Bism...
• CasNo: 1304-85-4
• Molecular Formula: Bi5H9N4O22
• Appearance: Powder/Solid
• Application: It is used to test sugars and alkaloid...
• DeliveryTime: Stocks
• PackAge: according to customers' requirements
• Port: Any port
• ProductionCapacity: 100 Metric Ton/Day
• Purity: 99%
• Storage: Store at +5°C to +30°C.
• Transportation: By air(EMS or EUB or FedEx or TNT ect....
• LimitNum: 1 Gram

Superiority

High purity 1304-85-4 free sample Bismuth subnitrate  supplied by China

1. Bismuth nitrate pentahydrate is ground by adding water, then ammonia water is slowly added, free nitric acid is neutralized, the precipitate is washed by decantation, suction filtered, then washed with cold water, and dried to obtain bismuth subnitrate. 2. The crystalline bismuth nitrate is made into a suspension solution, which is adjusted by adding refined sodium carbonate solution or ammonia water, and the reaction is continuously stirred, and the reaction product is filtered, washed and dried. 3. In the industry, a double decomposition method is adopted, and bismuth nitrate is added to water, and the double decomposition is carried out by adjusting pH = 1.7 to 1.9 with ammonia water or sodium carbonate. The reaction scheme is as follows. The process flow of the metathesis is as follows. Take crystalline bismuth nitrate [Bi(NO3)3 · 5H2O], add 1.5 times the amount of pure water to make a suspension, then quickly poured into 500L warm water (30~35 ℃), add refined sodium carbonate solution or ammonia water, adjust pH = 1.7~1.9, hydrolyze under constant stirring for 15min, and then discharge through high-frequency water changer or magnetic water changer, the reactant sodium bismuth powder is loose to generate microcrystals, and the clinical curative effect is improved. Since the present article is a basic salt of variable composition, its chemical composition varies depending on the metathesis conditions in the manufacturing process. For example, the chemical composition is similar to that of Bi2O3 · N2O5 · 2H2O at low temperature, and the chemical composition is similar to that of 2 Bi2O3 · N2O5 · H2O at high temperature. The double decomposition product is filtered off the mother liquor, and washed with warm pure water for 4 times until the pH value is about 4. This product should not be washed more, otherwise, wash more acid, abnormal phenomenon. The mechanism is: Further hydrolysis, free nitric acid.

Details

Established in 2010, located in Hangzhou Qinglan science park, lingruichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals tovarious industries.n our R&D centre. we have a staff of skilled and experienced research chemists. This has enabled us to meet the special reauirements of our customers and it has enabled us to provide quality products at competitive prices.

1. How can we guarantee quality

Always a pre-production sample before mass production;

Always final Inspection before shipment; 

2.What can you buy from us

Plant Extracts,Cosmetics Raw Materials,Vitamin Raw Materials,Pharmaceutical Raw Materials and Intermediates

3. Why should you buy from us not from other suppliers

Our company mainly devoted in producing pharmacetical intermediates , Vitamins , and health supplement , the quality and technical content can reach the advance level in China .Our products are sold well in China as well as in more than 20 countries.

Lingrui's credo is committed to your reliable business partner,reliable quality, competitive prices and superior service, lf you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future !