- Apr 19, 2018 -
1. Strong oxidation
Due to the different nature of elements, chemicals can be divided into oxidants and reductants. The laboratory management should optimize the storage of the two reagents to ensure the placement of the two substances. Because of the unstable nature of the oxidizer and reductant, it is easy to react, so it cannot be mixed together.
In addition, the two will happen under the condition of the heating and collision REDOX reaction, can cause the destruction of the drug nature, not only against drug management mode, and adverse impact on the safety of the whole lab. In the laboratory, KMnO4, KClO4 and Na2O2 are all oxidizing agents and should be stored in a dry, cool and ventilated place.
2. Low boiling point and instability.
In chemical drugs, reagents with unstable melting point and boiling point should be kept in concentrated low-temperature seal to reduce the influence of environment on drug storage. Organic reagents are even buried in sand to reduce the volatilization of drugs. In addition, iodine should be stored in brown bottles to reduce the quality of the drug. For drugs that are stable in the air, they should be classified according to the basic properties of the drug, and they can be divided into effective areas according to acid and alkali salt, simple substance and compound.
3. Inflammable and explosive.
Explosive reagent: should be placed in the ventilation, far away from the fire source and strong light, with explosion-proof lamp lighting; With flammable, acid, easy to be oxidized and other substances isolated storage. Such as trinitrotoluene, trinitrophenol, nitrocellulose, etc.
Flammable reagent: the combustion condition is more, such as white phosphorus spontaneous combustion, should be stored in the brown jar of water, the water should be soaked in all white phosphorus; The reagent bottle was buried in a metal can of silica; Metal potassium sodium meets water combustion, should be sealed in dry, low temperature, ventilated place; Ethyl ether ethanol is highly flammable and should avoid sun exposure and isolation heat source.
4. Strong corrosiveness
Has strong corrosive, after contact with the human body or other items, namely a corrosive effect, appear damage damage phenomenon of reagents, such as strong acid, strong alkali, phenol and bromine, etc., to conduct centralized management. In the process of storage, must be away from the high density of the corresponding instrument, to avoid adverse laboratory equipment damage. Other equipment, such as balance and voltage stabilizing ac and dc power supply, should be kept away from corrosive drugs and stored separately.
5. Highly toxic
One is the drug, which has a strong killing ability, which can cause death, such as mercury, cyanide and organophosphorus products. One is a drug, which is caused by accidental ingestion, contact with the skin or invading the body, causing poisoning or disease, such as BaCl2, CCl4, etc. For such drugs, laboratory managers should set up storage counters, and carry out the system of double receiving and receiving, in order to ensure the safety management of drugs.
In addition, laboratory management personnel to set up the drug recipients registration details, ensure access formalities complete, to the underlying store capacity is also to be centralized control, as long as you can supply the corresponding experiment.
Rational use of drugs.
To avoid waste and contaminated medicines, the following points should be noted:
(1) the reagent of the grade of purity that should be used for the use and use requirements;
(2) the reagent should not be contaminated during the process. Remove the reagent from the reagent bottle with a clean horn spoon or stainless steel spoon. If the reagent is lumped, apply clean glass rod and then remove. The liquid reagent is applied to the clean cylinder. The unused residual reagent from the reagent must not be reversed to the original bottle;
(3) safety should be paid attention to in the process of taking. When opening the bottle stopper of the volatile reagent, the bottle should not be pointed to the person, and the smell of the reagent odor should not be used with the nose. It should be noted that the reagent must not be spilled;
(4) when taking the volatile reagent, it should be carried out in the fume hood, and the appropriate protective equipment should be worn when taking the poisonous and harmful reagent.
The record of reagent drugs.
In the process of the use of chemical drugs, the management of drug use is more important. Before the use of drugs, drugs should be classified into several categories for registration, ensuring better implementation of relevant work; In the process of drug use, the science and rationality of drug registration should be paid attention to, so as to ensure the reasonable management of drugs to a certain extent. On this basis, it is necessary to register the use of drugs, and record the use of drugs in detail, especially dangerous goods. Registration includes: time, reagent name, quantity, use, user signature, etc.