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| CAS番号. | 50-21-5 |
| 化学名: | α-ヒドロキシプロピオン酸 |
| 别名: | ケム-カスト;乳酸;2-ヒドロキシプロパン酸;ヒドロキシプロピオン酸;ミルク酸;α-ヒドロキシプロピオン酸;2-ヒドロキシプロピオン酸;50%乳酸;1-ヒドロキシエタン-1-カルボン酸;DL-乳酸 |
| 英語化学名: | Lactic acid |
| 英語别名: | Purac;sy-83;E 270;propel;Lactic;Biolac;MILK ACID;FEMA 2611;Patlac LA;Chem-Cast |
| CBNumber: | CB8193447 |
| 分子式: | C3H6O3 |
| 分子量: | 90.08 |
| MOL File: | 50-21-5.mol |
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| α-ヒドロキシプロピオン酸 物理性質 |
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| 沸点 : |
122 °C15 mm Hg(lit.)
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| 比旋光度 : |
-0.05 º (c= neat 25 ºC) |
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| 比重(密度) : |
1.209 g/mL at 25 °C
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| 安定性：: |
Stable. Combustible. Incompatible with strong oxidizing agents. |
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α-ヒドロキシプロピオン酸 化学特性,用途語,生産方法 |
化学的特性
colourless to yellow liquid |
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使用
Prostaglandin E1 analogue |
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一般的な説明
A colorless to yellow odorless syrupy liquid. Corrosive to metals and tissue. Used to make cultured dairy products, as a food preservative, and to make chemicals. |
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空気と水の反応
Soluble in water. |
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反応プロフィール
Lactic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Lactic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. Slowly corrodes most metals [USCG, 1999]. |
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健康ハザード
Inhalation of mist causes coughing and irritation of mucous membranes. Ingestion, even of diluted preparations, has a corrosive effect on the esophagus and stomach. Contact with more concentrated solutions can cause severe burns of skin or eye. |
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火災危険
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. |
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| α-ヒドロキシプロピオン酸 生産企業 Global( 233)Suppliers |
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