How volatile is benzene exactly?
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Benzene has the property of being volatile, but just how volatile is it? Do any friends who work in chemical plants have personal experiences?
It is said that in the past, the older workers at our factory used benzene to clean their work clothes, as it was very effective at removing engine oil; washing them on a sunny noon day hardly caused any delay in wearing them in the afternoon
Bro, use benzene to wash clothes! Benzene is a **class 1 toxin that causes leukemia and is also carcinogenic. The veteran workers in your factory are really strong!
Benzene isn’t as scary as it seems; you can search online for information on its hazards, and there are also standards regarding volatility.
Benzene (C6H6) is an organic compound and the simplest aromatic hydrocarbon. At room temperature, it is a colorless, sweet-smelling transparent liquid with a strong aromatic odor. Flammable, toxic, and classified as a Group 1 carcinogen by IARC. Benzene is insoluble in water but soluble in organic solvents, and it can also be used as an organic solvent itself. Density: 0.8786 g/ml. Relative vapor density (air=1): 2.77. Vapor pressure (26.1°C): 13.33 kPa. Critical pressure: 4.92M Pa. Melting point 278.65 K (5.51 ℃). Boiling point 353.25 K (80.1 ℃). The volatility of a general solution is determined by its vapor pressure at the given temperature; in other words, the lower the temperature, the higher the vapor pressure, meaning greater volatility. It can also be said that the lower the boiling point, the greater the volatility. Water has a boiling point of 100°C, while ethanol’s boiling point is 78.4 °C (351.6 K); thus, its volatility lies between that of water and ethanol. It should be noted that the flash point is -10.11°C (under closed conditions). According to Article 1 of the building fire protection codes and the petrochemical fire protection regulations, liquids with a flash point below 28°C fall into Category A buildings; therefore, it is essential to take precautions against fires and explosions. Doing laundry in such areas is especially dangerous – not only can skin contact with benzene vapor cause poisoning, but a fire could also occur immediately. . ~!
Theoretical knowledge about benzene is available online, but in the actual production process, it was found that the amount of benzene decreased inexplicably; I suspect its volatility is much greater than we thought.
Looking at the value on floor 5, the saturated vapor pressure indicates that the volatility is quite high. For storage and transportation, it should be fully enclosed, with a water seal in place.
The volatility is extremely high; in areas where benzene is present in the air, it is necessary to wear appropriate filters (gas masks). In the event of a leak, ordinary filters (gas masks) are ineffective as the benzene can easily penetrate them. For any situation involving exposure to benzene, complete sealing is required, including for transportation and storage
Use benzene for the open area? Can’t smell the flavor?
I think there should be a more specific standard, something to compare it against, rather than just talking generally about saturated vapor pressure.