Benzene is an acute as well as a chronictoxicant. The acute toxic effects from inhalation,ingestion, and skin contact are low tomoderate. The symptoms in humans are hallucination,distorted perception, euphoria, somnolence,nausea, vomiting, and headache. Thenarcotic effects in humans may occur from...
1,2,4-Trimethylbenzene (mesitylene) is an aromatic hydrocarbon compound commonly present in commercial solvents encompassing their boiling range. Mesitylene are the most common isomer used in commercial applications. Aromatic hydrocarbons in hydrocarbon solvents are predominantly alkylated one ring structures...
Figure 4. Sexual dimorphic response to benzene exposure in the female and male placenta (A) Volcano plots of differentially expressed genes in the female placenta when exposed to benzene (>0.6-fold increase, p value < 0.05). 452 out of 15,674 genes are differentially expressed. (B) Volcano...
It is obtained by sulfonation and neutralization of heavy alkylbenzene by-product from the alkylbenzene plant. The double membrane sulfonation method is as follows. First, the metered SO3 gas and dry air are mixed in the mixer to a SO2 concentration of 4% (volume), and then the mixed gas...
The findings also showed that the surgery duration had a significant association with toluene production (p=0.049). Conclusion: The concentration of BTEX compounds was low, but the PM2.5 values are high in the studied operating rooms. Long-term exposure to BTEX compounds can be ...
It is estimated that 5280 coal burning stoves per square kilometre are used for cooking in Calcutta. The median concentration of benzene, toluene and xylene in the smoke plume above the coal burning stove used for cooking, was found to be 5497 g m3, 4080 g m3, and 962 g m3 respectively...
The aromatic volatile organic compounds toluene, benzene and styrene induce COX-2 and prostaglandins in human lung epithelial cells via oxidative stress an... Toluene, benzene and styrene are volatile organic compounds (VOCs) widely distributed in the environment. Tobacco smoke, traffic exposure and ...
With the increase of concentration, the irritation is enhanced, which can stimulate the skin and respiratory tract. Gastric mucosa is stimulated when eating in a poorly ventilated room. Styrene is different from benzene and does not cause chronic poisoning, because styrene is easily oxidized into ...
Benzaldehyde is prepared by catalytic reduction of benzoyl chloride in the laboratory. The main current preparation route is liquid chlorination or oxidation of toluene. The preparation methods that are eliminated include incomplete oxidation of benzyl alcohol, alkaline hydrolysis of benzoyl chloride, and ...
of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents. Acetonitrile and propionitrile are soluble in water, but nitriles higher than propionitrile have low aqueous solubility. They are also insoluble in aqueous ...