hydroquinone

hy·dro·qui·none

H0349100 (hī′drō-kwĭ-nōn′, -kwĭn′ōn′) also hy·dro·quin·ol (-kwĭn′ôl′, -ōl′)n. A white crystalline phenol, C₆H₆O₂, used as an antioxidant, photographic developer, stabilizer, and reagent.

hydroquinone

(ˌhaɪdrəʊkwɪˈnəʊn) or

hydroquinol

n (Elements & Compounds) a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C6H4(OH)2. Also called: quinol

hy•dro•qui•none

(ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn)

also hy•dro•quin•ol

(-ˈkwɪn ɔl, -ɒl)

n. a white crystalline compound, C₆H₆O₂, formed by the reduction of quinone, used chiefly in photography and to inhibit autoxidation reactions. [1860–65]

Translations

idrochinone

Hydroquinone

enUK

hydroquinone

[¦hī·drə·kwə′nōn] (organic chemistry) C₆H₄(OH)₂ White crystals melting at 170°C and boiling at 285°C; soluble in alcohol, ether, and water; used in photographic dye chemicals, in medicine, as an antioxidant and inhibitor, and in paints, varnishes, and motor fuels and oils. Also known as hydrochinone; hydroquinol; quinol.

Hydroquinone

(also called p-dihydroxy-benzene), colorless crystals. Melting point, 170.3° C; density, 1.358 g/cm³. Sublimates in a vacuum.

Hydroquinone is readily soluble in ethanol and ether and slightly soluble in benzene; 5.7 g of hydroquinone dissolves in 100 g of water at 15° C. It is a powerful reducing agent. In aqueous solutions, particularly alkaline solutions, it is oxidized by atmospheric oxygen.

p-benzoquinone

Hydroquinone is produced industrially by the reduction of quinone, as well as by alkaline fusion of p -hydroxy-benzenesulfonic acid or p -chlorophenol.

Hydroquinone is used as a photographic developer and as an antioxidant. It is an intermediate in the synthesis of many organic dyes. In analytical chemistry it is used in the determination of a number of elements. The molecular compound of hydroquinone with quinone—so-called quinhydrone, C₆H₄O₂ C₆H₄(OH)₂—is used in determining hydrogen-ion concentration. The compound of hydroquinone with glucose, arbutin, is widespread in nature. Hydroquinone was first prepared by the German chemist F. Wöhler in 1844.

See Hydroquinone

单词	hydroquinone
释义	hydroquinone enUK hy·dro·qui·none H0349100 (hī′drō-kwĭ-nōn′, -kwĭn′ōn′) also hy·dro·quin·ol (-kwĭn′ôl′, -ōl′)n. A white crystalline phenol, C₆H₆O₂, used as an antioxidant, photographic developer, stabilizer, and reagent. hydroquinone (ˌhaɪdrəʊkwɪˈnəʊn) or hydroquinol n (Elements & Compounds) a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C6H4(OH)2. Also called: quinol hy•dro•qui•none (ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn) also hy•dro•quin•ol (-ˈkwɪn ɔl, -ɒl) n. a white crystalline compound, C₆H₆O₂, formed by the reduction of quinone, used chiefly in photography and to inhibit autoxidation reactions. [1860–65] Translations idrochinone Hydroquinone enUK hydroquinone [¦hī·drə·kwə′nōn] (organic chemistry) C₆H₄(OH)₂ White crystals melting at 170°C and boiling at 285°C; soluble in alcohol, ether, and water; used in photographic dye chemicals, in medicine, as an antioxidant and inhibitor, and in paints, varnishes, and motor fuels and oils. Also known as hydrochinone; hydroquinol; quinol. Hydroquinone (also called p-dihydroxy-benzene), colorless crystals. Melting point, 170.3° C; density, 1.358 g/cm³. Sublimates in a vacuum. Hydroquinone is readily soluble in ethanol and ether and slightly soluble in benzene; 5.7 g of hydroquinone dissolves in 100 g of water at 15° C. It is a powerful reducing agent. In aqueous solutions, particularly alkaline solutions, it is oxidized by atmospheric oxygen. p-benzoquinone Hydroquinone is produced industrially by the reduction of quinone, as well as by alkaline fusion of p -hydroxy-benzenesulfonic acid or p -chlorophenol. Hydroquinone is used as a photographic developer and as an antioxidant. It is an intermediate in the synthesis of many organic dyes. In analytical chemistry it is used in the determination of a number of elements. The molecular compound of hydroquinone with quinone—so-called quinhydrone, C₆H₄O₂ C₆H₄(OH)₂—is used in determining hydrogen-ion concentration. The compound of hydroquinone with glucose, arbutin, is widespread in nature. Hydroquinone was first prepared by the German chemist F. Wöhler in 1844. See Hydroquinone hydroquinone enUK hydroquinone [hi″dro-kwin´ōn] a topical agent used to bleach hyperpigmented skin. hydroquinone (hī′drō-kwĭ-nōn′, -kwĭn′ōn′) also hydroquinol (-kwĭn′ôl′, -ōl′)n. A white crystalline phenol, C₆H₆O₂, used as an antioxidant, photographic developer, stabilizer, and reagent. AcronymsSeeHQ
随便看	coronin-like protein p57 coronion coronis coronis (diacritic) coro-nitro coronium coronizing coronograph coronographic apodizer mechanism coronoid coronoidectomy coronoid fossa coronoid fossa of humerus coronoid fossa of the humerus coronoid notch coronoid process coronoid processes coronoid process of mandible coronoid process of the mandible coronoid process of the ulna coronoid process of ulna coronor coron, philippines coronule coroparelcysis