xylene

The ephedrin was extracted from the upper layer of xylene extraction solution and sodium c...

下层铜代,酸化,碱化得麻黄卟啉铜钠。

The product meet a criterion of environment, no formalin, methanol, lead, arsenic, mercury, benzene, toluol, xylene afterthroughtest ofnational authoritative organization.

本为车内降温用，适用于汽车开空调前炙热的汽车座垫、靠背、方向盘等的降温。

Used as a component of solvents in the process of the azeotropism, and could partly replace toluene, xylene and methyl isobutyl ketone (MIBK).

由于它适度的挥发性和良好的皮肤渗透用，可以用吸收的促进组分；

it expounds method of benzene anhydride monochloride production by liquid phase air oxidation with mixed o-xylene monochloride as raw material.

论述了以混合单氯代邻二甲苯为原料,采用液相空气氧化法制取单氯代苯酐的方法。