Polycyclic aromatic hydrocarbons, also known as polycyclic aromatic hydrocarbons, are yellow flake or needle-like crystals precipitated from light petroleum, with pale green fluore
Jul 28, 2022
Cyclic compounds are divided into carbocyclic compounds and heterocyclic compounds. A cyclic compound refers to a compound in which the atoms in the molecule are arranged in a ring
Ring-opening polymerization refers to the reaction in which cyclic compound monomers are converted into linear polymers through ring-opening addition.
Engineering plastics can be divided into general engineering plastics and special engineering plastics. The former main varieties are polyamide, polycarbonate, polyoxymethylene, mo
Ethyl chloride is an organic compound with the chemical formula C2H5Cl. It is a colorless gas at room temperature and pressure with an ether-like odor. It is slightly soluble in wa
Jul 31, 2022
Alkyl is a hydrocarbon group formed by missing one hydrogen atom in an alkane molecule, commonly represented by -R. Alkyl is a type of chain organic group containing only carbon an
Carbon anion is an active intermediate of carbon with three groups, a lone pair of electrons, and a negative charge of one unit. Tetrahedral configuration. A lone pair of electrons
Jul 30, 2022
There are no protons in aprotic polar solvent molecules. Compared with water, it has almost no acidity and no amphoteric characteristics. Methyl sulfoxide, pyridine, etc.
Inert solvent action Often mixed with protic solvents to dissolve, disperse and dilute solutes
Jul 29, 2022
The inert solvent has no acid-base property or very weak acid-base, and has no proton transfer process. When the solute acid and base react in the solvent, the solvent molecules do
Ethyl cyanoacetate is an organic compound with the chemical formula C5H7NO2. It is a colorless liquid, slightly soluble in water, soluble in lye, ammonia, and miscible in ethanol a
Benzaldehyde is an organic compound with the molecular formula C7H6O, which is a colorless liquid. Found in hyacinth, citronella, cinnamon, iris, rock rose.
