gfschemicals

(1), the need for glass lid acidic solution, toluene, ethyl ether, such as application of organic solvents should not use glass plug rubber plug, the lid rubber stop alkaline solution needs.
(2), some special agents need to preserve in plastic bottles, such as hydrofluoric acid. Because the hydrofluoric acid corrosion to glass. SiO2 + 4 HF --- SiF4 ↑ + 2 H2O.
(3) generally solid jars, liquid generally small mouth bottles
(4) easy to see light of reagent decomposition or deterioration of general-sheng in brown bottles, such as nitric acid, silver nitrate, chlorine water and so on. Cold dark place. Other bottles generally colorless.

(5) susceptible to oxidation and deterioration of the reagents: ① lively ho potassium, sodium, calcium oil stored in the burst

② potassium iodide, ferrous sulfide, sodium sulfate, such as preservation of peace and not to preserve the solid solution. The use of ferrous sulfate or ferrous oxide when the solution or by putting a small amount of iron nails.

(6) due to absorption of carbon dioxide or water vapor and the deterioration of reagents should be sealed to preserve (such as NaOH,limewater, bleaching powder, sodium silicate, Na2O2, etc.) are limewater with current best

(7) to preserve a small amount of white phosphorus in water

(8) liquid bromine stored in small mouth bottle, add water surface to "seal" bottle and sealed with wax

(9) concentrated hydrochloric acid, ammonia, iodine, and benzene, toluene, ether and other low boiling point organic compounds are kept in the bottle plus sealed plastic cover, placed in the dark cold.