Is it harmful for humans in an acidic corrosive gas environment

Acidic corrosive gases are harmful to the human body.

Long-term exposure of the human body to acidic corrosive gases will lead to the erosion of the respiratory tract, which will cause harm to the human body.

If you need to work with acidic corrosive gases for a long time, you need to wear chemical protective clothing accordingly.

How to wear chemical protective clothing.

Follow these steps to wear protective clothing:

1. The protective clothing must be inspected and tested for air pressure to determine that there are no defects, and the protective clothing must be selected according to the use.

2. If necessary, apply anti-fogging agent to the sight glass of the protective suit according to the recommended instructions.

3. Choose a two-person "cooperative organization", that is, have another person to help while wearing protective clothing.

4. Underwear should be worn inside the protective clothing, at least. Long-sleeved shirts and long pants are recommended. or long "underwear", you should consider wearing fire-resistant underwear.

5. Remove personal items that may damage the protective clothing, such as pens, badges, jewelry, etc.

7. Roll the trouser legs into the stockings so that you can easily put on the trouser legs and long rubber boots of the protective clothing.

8. If a self-contained air breathing apparatus is used, check and install the device, complete all connections, and adjust according to the requirements of the manufacturer, unless the breathing apparatus requires it, do not wear a mask for the time being.

9. Put both legs into the protective suit while sitting. Put both feet in the jacket boots and pull off the boot cover on top of the boots. (Note: Work boots should be size 1 to 2 larger than the boots normally worn, so that there is enough space to put the boots with the soft cover of the suit into the overboots.) )

10. Stand up and tie up the inner belt, if you have one.

11. Turn on the air ** device, put on the mask, and make sure that the air supply system is working normally.

12. Put your arms and head into the protective clothing, close the zipper, and then close the zipper to cover.

13. Ask the assistant to check whether the zipper and bracelet cover are completely tightened, whether the vision of the mask is clear, and whether all air lines are tightly connected.

14. Whether the protective clothing is in the best working condition. Arm movement while wearing protective clothing: The design of the airtight protective suit allows the arms to move flexibly while wearing protective clothing, which is necessary in case of emergency, such as adjusting the switch of the built-in air respirator and cleaning the goggles.

15. The wearer can easily take his arm out of the sleeve. Grasp the glove loop with your other hand to remove your hand from the glove and gown.

16. Grasp your fingers, not the glove ring, to prevent the glove from turning over.

The aqueous solution of strong acid and strong alkali is corrosive, and the inert gas of the eighth main group of the periodic table is not corrosive, and the remaining gas is more or less corrosive. Weak acids and alkalis are also corrosive.

The types of corrosion can be divided into two categories: wet corrosion and dry corrosion. Wet corrosion refers to the corrosion of metals in the presence of water, while dry corrosion refers to corrosion in dry gas in the absence of liquid water. Wet corrosion is the most common due to the widespread presence of water in the atmosphere and the frequent handling of various aqueous solutions in chemical production, but the hazards caused by dry corrosion during high-temperature operation cannot be ignored.

Some acid gases are harmful to us humans, such as the air is polluted, which contains sulfur dioxide, sulfur trioxide, etc., these gases react with oxygen and so on rainy days to generate strong acidic chemicals of sulfuric acid, sulfuric acid has a strong corrosive effect, and the objects on the ground will naturally be corroded, this is acid rain, acid rain especially has the greatest impact on trees, can be fatal, and seriously affect the human living environment, so the world pays special attention to the environment, and formulates many measures to reduce the production of polluted air factories, Develop a green economy and a green life. The lab has red litmus and blue litmus papers.

Red litmus paper moistened with distilled water turns blue with alkaline gas.

Blue litmus paper moistened with distilled water turns red when exposed to acidic gases.

Acid gas refers to a gas that reacts with alkali to form salts.

Common non-metallic oxides such as carbon dioxide sulfur dioxide, common non-metallic gaseous hydrides such as hydrogen halide, hydrogen sulfide, hydrogen arsenide, alkaline gas refers to gases that can react with acids to form salts such as ammonia. At the same time, some gases that form acid after reacting with water are also considered to be acid gases, such as halogen elemental chlorine, bromine vapor, etc., and other non-salt oxide gases, stable gases such as hydrogen, nitrogen, and oxygen are neutral gases. Acid gas:

CO2, Cl2, H2S, HCL, SO2, etc.

Alkaline gas: NH3

Neutral gases: N2, O2, H2, CH4, CO, and inert gases, etc.