Naphthoquinone

Product description:In theory there are six kinds naphthoquinone, of which only 1,4 -, 1,2 - and 2,6 - Three can stabilize the system. Naphthoquinone usually refers to 1, 4 - naphthoquinone. 1,4 - naphthoquinone is bright yellow needle-like crystals; melting point 128.5 ℃.It can be sublimated at 100 ℃ and can be distilled with water vapor; soluble in ethanol, ether, benzene. Naphthoquinone limb of the skin, mucous membrane irritation, and can cause allergic dermatitis. By the a-naphthol, a-naphthylamine or naphthalene oxidation system, the industry is the presence of naphthalene oxidation in the production of vanadium pentoxide. Naphthoquinone is the production of phthalic anhydride by-product of the process. 2,3 - dichloro-naphthoquinone is an important agricultural fungicide for the control of wheat smut, blast, potato late blight and seedling damping-off and other vegetables.