1, suitable conditions for storage Hawthorn temperature requirements -2 ~ 0 °C, relative humidity 90% ~ 95% (storage temperature 2 ~ 4 °C, the humidity required 85% ~ 90%). Atmosphere storage, oxygen 7% to 15%, carbon dioxide 5% to 10%. 2. Issues needing attention in the storage of hawthorn production 1 Selection of varieties with strong storage resistance: In general, fruit-shaped and fleshy varieties (ie, fruit cultivars known as glutinous rice dumplings, such as Dajin Venus, Lushan Mountain, etc.) ) Poor tolerance, but the fruit shape is smaller, hard meat varieties (ie, the fruit farmer said, iron balls, purple pearls, cinnabar red, hard red, etc.) are more resistant to storage. 2 Select the optimal harvest period: The storage hawthorn should be harvested in a timely manner, that is, the fruit turns red, the fruit spot is obvious, and the picking occurs when the fruit stem is separated. Fruits with falling fruits, insects, and high ripeness should not be stored. Hawthorn shall be placed in a cool place after harvesting. Bags shall be bagged after one day of heat dissipation. When the heat is dissipated, the thickness of the fruit pile should not exceed 30 cm, and do not store food in a timely manner. Otherwise, physiological brown spots may occur due to heat. 3 The picking method should be appropriate: Fruits that are healthy and non-destructive have good resistance to hiding, and fruits that have been damaged by collisions are perishable. For storage of fruit, use scissors to cut the handle or pick it by hand. The fruits that are shaken with trees or beaten with bamboo rafts cannot be stored for a long time because of many collisions and other injuries. 4 Problems that should be paid attention to during storage of hawthorn: During the storage of hawthorn, adjusting and controlling the temperature and humidity in the storage place is an important measure for guaranteeing quality, keeping freshness, and prolonging the storage period. Effectively mastering the four principles of low temperature, heat prevention, heat preservation, and air permeability is an extremely important technical link to improve the Tibetan-tolerance, loss, and quality of hawthorn fruit. 3. Storage and Fresh-keeping Techniques in Hawthorn Production Sites Hawthorn's storage and preservation technology is similar to that of apples. It can refer to the storage and preservation technology of apple production areas. However, in the simple atmosphere storage of modified atmosphere or plastic film, Hawthorn fruit can tolerate higher concentrations of carbon dioxide and lower concentrations of oxygen in the early stage of storage (10 to 11 months of time to control the oxygen at 7% to 10%, carbon dioxide 7% to 10%), while the late storage period (from March to March in the following year) requires higher concentrations of oxygen and lower concentrations of carbon dioxide (oxygen 15%, carbon dioxide 1% to 3%), otherwise it will deteriorate and decay.
Cryolite Basic Information
CAS: 15096-52-3
MF: AlF6Na3
MW: 209.94
EINECS: 239-148-8
Mol File: 15096-52-3.mol
Cryolite Chemical Properties
Melting point 1012
Boiling point decomp
density 2.9 g/mL at 25 °C(lit.)
Cryolite Application
Mainly used as aluminum smelting flux, Insecticide, also used in glass, enamel, resin, rubber industry
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