Wear a variety of glasses, including contact lenses, for protection when conducting hazardous chemic

When doing hazardous chemical experiments, of course, you need to wear special protective glasses.

I also want to sit in the seat, and talk about the winter eye tremor that should be matched during the experiment. As if packaging stealth eyes, this may be what you as biochemical said ten years may be to bring the matching winter eyes as if packaging. Shadow glasses.

When doing dangerous chemical experiments, it is very easy to cause great harm to people, so special protective clothing and protective glasses should be equipped when doing this kind of experiment.

The experiment is a very dangerous experiment, so it is necessary to take certain safety precautions, especially glasses, and of course wear some protective glasses.

Portable is availableEyewashesWash all kinds of chemicals

The portable eyewash device can effectively clean the chemical splash of the human face and eyes, and is a good emergency eyewash device. However, there are many types of chemicals, not all of which can be eliminated by simple cleaning, and some need to be supplemented by some other cleaning methods.

Emergency spray and eyewash are the standard protective equipment in our laboratory, when the eyes are injured by chemical dangerous goods, you can use the emergency eyewash to rinse the eyes urgently, and go to the hospital as soon as possible in serious cases**; When a large amount of chemicals are spilled on your body, you can spray your whole body with an emergency sprinkler first, and go to the hospital as soon as possible** if necessary.

How to use:

1. The eyewash can be used for emergency irrigation of the eyes and face. When using, hold the eyewash hand valve and pull up the eyewash, open the eyewash dust cover, and gently push the hand valve with your hand, and the cleaning water will automatically spray out from the eyewash nozzle. After use, the push valve must be reset and the dust cover must be reset.

2. The emergency eyewash spray has two sets of devices, eyewash and sprayer, which can be used for emergency irrigation of the eyes and face, and can also be used for full-body rinsing, in which the use of the eyewash is the same as that in the physical and chemical room. When using the sprinkler, stand under the sprinkler head and pull down the valve handle, and the cleaning water will automatically spray out of the sprinkler. Immediately after spraying, push the valve handle up to turn the water off.

Do not wear crypto-mold finger glasses during the chemical calendar code inspection. (Limb Oak).

a.That's right. b.Mistake.

Correct Answer: a

Protective glasses must be worn when doing dangerous experiments, and hydrogenation reactions and high-pressure counter-mu pulses must be carried out in special laboratories.

1. Laboratory special equipment includes pressure-bearing, manning and lifting equipment or facilities involving life safety and greater danger, including boilers, pressure vessels, and pressure pipelines.

2. Eight types of elevators, cranes, passenger ropeways, large-scale amusement facilities, and motor vehicles in the field. Among them, boilers, pressure vessels, and pressure pipelines are special pressure-bearing equipment.

3. Special equipment refers to eight categories of equipment, including boilers, pressure vessels, pressure pipelines, elevators, lifting machinery, passenger cableways, large-scale amusement facilities and special motor vehicles in the field, which involve life safety and greater danger.

4. In order to ensure the safe operation of special equipment, the state has strict regulations on all kinds of special equipment from production, use, inspection and testing, and implements the supervision of the whole process.

Introduction to Hydrogenation Reactions:

1. Hydrogenation reaction method, especially a selective hydrogenation reaction method for diolefins in liquid hydrocarbon fractions such as steam cracking volatile substances.

2. This kind of volatile substance actually contains compounds that form gums, which are composed of diolefins mixed with olefin compounds and aromatic hydrocarbon compounds.

3. In order for these olefin compounds and aromatic compounds to become useful forms, diolefins must undergo selective hydrogenation. This method is generally carried out by placing a metal catalyst on an amorphous or crystalline support with a crystalline resistant body.

4. The high instability of volatile substances decomposed at high temperature makes this method more difficult, because the polymerization reaction of the catalyst parallel to the hydrogenation reaction leads to the agglomeration and inactivation of the catalyst.

The correct way to collect hazardous chemical test items is as follows:

1. For the collection of chemical reagents, there must be an experiment notice, and the laboratory administrator must prepare the required chemical reagents according to the notice. For general chemical reagents, the relevant administrator can only receive them after completing the registration procedures.

2. For the quantity of chemical reagents received each time, the relevant laboratory administrator should weigh and record it on the gross weight label on the Rongnafeng device in time for accounting vouchers for later viewing.

3. When receiving chemical reagents or drugs, first confirm whether the name marked on the container is the required experimental drug. In particular, it is necessary to pay attention to the hazard labels and patterns of the wide mu of medicine, and whether it is harmful. For the sake of safety and smooth testing, be sure to check the drug report sheet and the safety data sheet of reagents and drugs.

4. When receiving flammable, explosive, highly toxic, strong corrosive, strong oxidizing and other dangerous reagents, you must apply and report in advance, so that you can use as much as you want, and prepare them for use at one time. The distribution of highly toxic drugs should be based on the principle of first-in, first-out, and the measurement of reagents, the time of distribution, and the relevant handlers should be accurately registered when distributing. All highly toxic drugs must be collected by two people and returned by two people, otherwise the warehouse keeper has the right not to distribute them.

The common dangerous chemical experimental items in the laboratory are listed as follows:

1. **Product: It has a violent ** character. When subjected to the action of external factors such as high thermal friction, impact, vibration or contact with other substances that conflict with performance, a violent chemical reaction will occur, producing a large amount of gas and high heat, causing **.

2. Oxidant: It has strong oxidation, and can decompose according to its different properties when it is mixed with acid, alkali, moisture, strong heat or flammables, organic substances, reducing agents and other properties, causing combustion and combustion.

3. Compressed gas and liquefied gas: the gas is stored in a pressure-resistant cylinder after compression, making it dangerous. If the cylinder is exposed to the sun or heat, when the pressure in the cylinder rises to greater than the pressure limit of the container, it can cause **.

4. Spontaneous combustion: This kind of substance is exposed to the air, relying on its own decomposition and oxidation to produce heat, so that its temperature rises to the spontaneous ignition point and can be burned. Such as white phosphorus, etc.

5. Burning items in contact with water: it can quickly decompose in water or humid air, produce high heat, and release flammable and explosive gases, causing combustion**.

When handling hazardous chemical liquids, wear protective eyewear that protects against chemical splashes, preferably closed goggles.

The goggles that prevent chemical splashes from hitting the eyes are very good, while the goggles have a good sealing and protective effect relative to the eyes, which can not only protect the front of the eyes, but also protect the eyes up and down.

Aren't they all wearing protective glasses?