sulfite

sul·fite

S0873700 (sŭl′fīt′)n. The divalent anionic group SO₃, derived from sulfurous acid, or a compound containing this group.

sul·fit′ic (-fĭt′ĭk) adj.

sulfite

(ˈsʌlfaɪt) n (Elements & Compounds) the US preferred spelling of sulphite

sul•fite

(ˈsʌl faɪt)

n. 1. a salt or ester of sulfurous acid. 2. any sulfite-containing compound, esp. one that is used in foods or drug products as a preservative. [1780–90] sul•fit′ic (-ˈfɪt ɪk) adj.

Translations

Sulfit

Sulfite

sulfite

[′səl‚fīt] (inorganic chemistry) M₂SO₃ A salt of sulfurous acid, for example, sodium sulfite, Na₂SO₃.

Sulfite

any of several salts of sulfurous acid, H₂SO₃. Two series of sulfites exist: the normal sulfites, with the general formula M₂SO₃, and the acid sulfites, or hydrogen sulfites, with the general formula MHSO₃, where M is a monovalent metal. Normal sulfites—with the exception of the sulfites of alkali metals and ammonium sulfite—are sparingly soluble in water. They dissolve in the presence of SO₂. Among the acid sulfites, only those of the alkali metals have been isolated in the free state.

Sulfites in aqueous solution are characterized by oxidation to sulfates and reduction to the thiosulfates, M₂S₂O₃. Sulfites are obtained by the reaction of SO₂ with hydroxides or carbonates of the corresponding metals in an aqueous medium. The hydrogen sulfites are more frequently used, and their applications are in the textile industry for dyeing and printing (KHSO₃ and NaHSO₃), in the paper industry for the production of wood pulp [Ca(HSO₃)₂], in photography, and in organic synthesis.

sulfite

[sul´fīt] a salt of sulfurous acid. Sulfites are used as preservatives for salad, fresh fruit and vegetables, wine, beer, and dried fruit. In susceptible individuals, especially those with asthma, they can cause a severe reaction; because of this their use has been curtailed, and foods that contain them must be labeled.

sul·fite

(sŭl'fīt), A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency.

sulfite

Sulfiting agent Food industry An agent used as a food preservative; up to 5% of asthmatics are sensitive to sulfites–possibly due to low levels of sulfite oxidase, and respond to sulfites with nausea, diarrhea, bronchospasm, pruritus, edema, hives, potentially anaphylactic shock and death; some drugs used for asthma may contain sulfiting agents. See Food allergies, Pseudoallergies.

sul·fite

(sŭl'fīt) A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency.

Sulfite

A type of preservative that causes allergic reactions in some people.Mentioned in: Bronchodilators

单词	sulfite
释义	sulfite sul·fite S0873700 (sŭl′fīt′)n. The divalent anionic group SO₃, derived from sulfurous acid, or a compound containing this group. sul·fit′ic (-fĭt′ĭk) adj. sulfite (ˈsʌlfaɪt) n (Elements & Compounds) the US preferred spelling of sulphite sul•fite (ˈsʌl faɪt) n. 1. a salt or ester of sulfurous acid. 2. any sulfite-containing compound, esp. one that is used in foods or drug products as a preservative. [1780–90] sul•fit′ic (-ˈfɪt ɪk) adj. Translations Sulfit Sulfite sulfite [′səl‚fīt] (inorganic chemistry) M₂SO₃ A salt of sulfurous acid, for example, sodium sulfite, Na₂SO₃. Sulfite any of several salts of sulfurous acid, H₂SO₃. Two series of sulfites exist: the normal sulfites, with the general formula M₂SO₃, and the acid sulfites, or hydrogen sulfites, with the general formula MHSO₃, where M is a monovalent metal. Normal sulfites—with the exception of the sulfites of alkali metals and ammonium sulfite—are sparingly soluble in water. They dissolve in the presence of SO₂. Among the acid sulfites, only those of the alkali metals have been isolated in the free state. Sulfites in aqueous solution are characterized by oxidation to sulfates and reduction to the thiosulfates, M₂S₂O₃. Sulfites are obtained by the reaction of SO₂ with hydroxides or carbonates of the corresponding metals in an aqueous medium. The hydrogen sulfites are more frequently used, and their applications are in the textile industry for dyeing and printing (KHSO₃ and NaHSO₃), in the paper industry for the production of wood pulp [Ca(HSO₃)₂], in photography, and in organic synthesis. sulfite sulfite [sul´fīt] a salt of sulfurous acid. Sulfites are used as preservatives for salad, fresh fruit and vegetables, wine, beer, and dried fruit. In susceptible individuals, especially those with asthma, they can cause a severe reaction; because of this their use has been curtailed, and foods that contain them must be labeled. sul·fite (sŭl'fīt), A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency. sulfite Sulfiting agent Food industry An agent used as a food preservative; up to 5% of asthmatics are sensitive to sulfites–possibly due to low levels of sulfite oxidase, and respond to sulfites with nausea, diarrhea, bronchospasm, pruritus, edema, hives, potentially anaphylactic shock and death; some drugs used for asthma may contain sulfiting agents. See Food allergies, Pseudoallergies. sul·fite (sŭl'fīt) A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency. Sulfite A type of preservative that causes allergic reactions in some people.Mentioned in: Bronchodilators AcronymsSeeSO3
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