An anti-return. Fishmeal should be stored in a ventilated and dry place, and the container should have good moisture barrier properties. Generally, the storage can be sealed with a plastic bag for a short period of time. For long-term storage, the glazed cylinder and the can should be covered and sealed to prevent the fish meal from coming into contact with the air.
Two high temperature protection. Fishmeal contains rich fish oil. When it encounters high temperature, it will cause bitter taste and lose its nutritional value. Therefore, plastic bags or tanks and cans containing fishmeal should be placed in a cool place and should not be exposed to direct sunlight. If the storage temperature is too high, you should also take appropriate measures to cool down.
Three anti-worms. Fishmeal is easy to produce mites, consume nutrients in fishmeal, and reduce the quality of fishmeal. The method of prevention and control is to maintain the hygiene of the container containing the fishmeal and the surrounding environment.
Dye intermediates mainly benzene intermediates, toluene intermediates, naphthalene intermediates and anthraquinone intermediates four categories, in addition, there are some heterocyclic intermediates. The main intermediates in the production of the reaction process are nitration, sulfonation, halogenation, reduction, amination, hydrolysis, oxidation, condensation and so on. Synthesis of a complex structure of the intermediate often go through many unit processes, sometimes using different basic raw materials and different synthetic routes. For example, the production of p-nitroaniline, the initial nitration with benzene, reduced aniline, re-acetylation, nitration, hydrolysis of the synthetic route, this method of long production process, high cost. Has now switched to benzene chlorination, nitration, separation of nitrochlorobenzene, and then high pressure ammonia solution synthesis route. For the manufacture of dyes, pesticides or Pharmaceutical Intermediates, usually complex structure, often supporting the final product and production, smaller production, production and more use of intermittent operation. Some of the most widely used intermediates, such as nitrobenzene, aniline, chlorobenzene, phenol, etc., are usually produced in a large, integrated chemical plant with large production volumes and continuous operation in production.
Dyestuff Intermediate,Methylbenzoyl Chloride,Naphthalenetetracarboxylic Acid,Acid Dyes Ethylbenzyltoluidine
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