Deposited zinc stearate

Chemical reagents zinc stearate is often due to improper storage in the storage and deterioration . Some reagents hygroscopic and deliquescence or hydrolysis ; others easily with oxygen in the air , carbon dioxide or other gases diffusion in which to react , and some reagents by  chromium oxide light and ambient temperature will degenerate . Therefore, must be based on the different nature of the reagent , respectively, to take appropriate measures for safekeeping. Preservation methods generally have the following :
1 sealed
After the reagents are generally drawn tightly with a stopper , in particular volatile substances ( such as hydrochloric acid , ammonia ) , and many low boiling point organic compounds ( such as acetone, formaldehyde , acetaldehyde , chloroform, benzene, etc. ) must be tightly closed tightly . Some hygroscopic or a case of steam generating strong hydrolysis reagents such as phosphorus pentoxide , anhydrous AlCl3 , etc., only iron oxide yellow  to close tightly , but also wax seal .
In the air can be spontaneous white phosphorus stored in the water. Reactive metals potassium, sodium To save in kerosene .
2 with brown bottle full bloom and placed in the shade
Light or heat perishable reagents ( such as potassium iodide , hydrogen peroxide , and bromine , chlorine ) to be stored in a brown bottle and placed in a cool place , preventing it from decomposition of deterioration. 3 Dangerous Drugs keep other medicines stored separately
Are easy to explode, burn , toxic, corrosive and  tio2 anatase radioactive and other hazardous substances, as well as by external factors can cause severe chemical accidents , are all hazardous chemicals . They must be stored separately stored , such as perchloric acid can also organics , or prone to explosion. Strong oxidizing substances and organic solvents can corrode the rubber , not in full bloom in a glass bottle with a rubber stopper . Easily affect the purity of the reagent erosion glass reagent , such as hydrofluoric acid , fluoride salt ( potassium fluoride , sodium fluoride , ammonium fluoride ) and caustic alkali (potassium hydroxide, sodium hydroxide ) , shall be stored in polyethylene plastic bottle or a glass bottle coated with paraffin .
Purity: more than 98.0% purity
Specifications : Solid : 5g, 10g , such as different specifications ( specifications , customers can call options )