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Nantong Fangbing Chemical Co., Ltd. is a well-known phenylhydrazine enterprise and a comprehensive modern industrial enterprise integrating scientific research and management.
The company's business scope covers various fields such as fine chemicals, pharmaceutical intermediates, chemical solvents, special inorganic chemicals, and chemical additives.
Nantong Fangbing Chemical Co., Ltd. We provide customers with high-quality products, good technical support, and sound after-sales service.
Modern chemical industry
Potassium bisulfite, also known as potassium bisulfate, is an inorganic chemicalRead More
Liquid ammonia is a good solvent. Due to the polarity of the molecule and the exRead More
, White to light gray crystals. It has the smell of flowers and aniline and needRead More
It is a synthetic hydrazine derivative, usually used as an intermediate for orgaRead More
Ammonium bisulfite, white orthorhombic prisms, density 2.03g/cm3, melting pointRead More
Agricultural liquid ammonia is filled with steel cylinders or tankers. Filling sRead More
Phenylhydrazine is a light yellow crystal or oily liquid at room temperature, anRead More
The chemical formula of sodium nitrite is NaNO2, and the oxidation number of nitRead More
The appearance is white orthorhombic prisms, soluble in water. It is usually useRead More
Uses of anhydrous sodium sulfite: bleaching agent for pulp and chemical fiber stRead More
Addition reaction, acid chloride reaction, oxidation reaction, nucleophilic substitution reaction. Phenylhydrazine is equivalent to an amino compound, which can react with aldehydes and ketones containing carbonyl groups, and can also react with acid chlorides.
White to light gray crystals, volatile and similar in toxicity to aniline. Can be used to identify DNA and nitrate. Used as a stabilizer for dyes and explosives.
Sodium nitrite is a kind of nitrite, and its aqueous solution is very alkaline (pH=9). It is corrosive to glass and rubber, but not very corrosive.
Sodium nitrite is an oxidant that can be removed by burning. The aqueous solution of sodium nitrite is alkaline and can be treated by acidification. Sodium nitrite has reductive properties and can be treated with sodium nitrate by oxidation.
Liquid nitrogen is liquid nitrogen. Under normal pressure, the temperature of liquid nitrogen is -196°C; 1 cubic meter bai of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen at 21°C. Liquid nitrogen is a colorless, odorless, liquid and gas at low temperature under high pressure.
exist. Ammonium bisulfite is stable only in solution, but will ionize and hydrolyze (double hydrolysis is not strong, because sulfurous acid and ammonia are inherently strong acids and bases), so it does not exist in molecules.
Sulfurous acid is a weak acid, and sulfuric acid is a strong acid. The strong acid can replace the weak acid radical in the weak acid salt, and the generated sulfur dioxide will escape from the aqueous solution due to its limited solubility.
Sodium carbonate, chemical formula: Na2CO3, common name "soda", "soda ash" (it is worth noting that sodium carbonate is not an alkali, but a salt, and its aqueous solution becomes alkaline).
Nantong Fangbing Chemical Co., Ltd. is a comprehensive modern industrial enterprise integrating scientific research and management. The company's business scope covers various fields such as fine chemicals, pharmaceutical intermediates, chemical solvents, special inorganic chemicals, and chemical additives.