ethyl oxalacetate的意思|示意

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Ethyl oxalacetate is a colorless ester with the chemical formula C4H6O4. It is often used as a reagent in analytical chemistry.

In analytical chemistry, ethyl oxalacetate is used as a reagent for the determination of reducing sugars. It is used in the Nelson-Somogyi method, also known as the semi-micro method, to determine the concentration of reducing sugars in a sample. The method is based on the reaction of the reducing sugars with a solution of ethyl oxalacetate in acidified sodium hydroxide to form a carboxylic acid. The carboxylic acid formed is then reacted with sodium bisulfite, followed by the addition of a colorimetric reagent. The intensity of the resulting color is proportional to the amount of reducing sugars present in the sample.

Ethyl oxalacetate is also used as a reagent in spectrophotometric analysis. In this method, the reagent is added to the sample and a color change is observed. The amount of substance present in the sample can then be determined by measuring the absorbance of the colored solution.

In addition to its use in analytical chemistry, ethyl oxalacetate is also used as an intermediate in the synthesis of other chemicals. For example, it is used to make n-butanol, a solvent that is used in the manufacture of a variety of products such as paints, pharmaceuticals, and dyes.

Ethyl oxalacetate is a hazardous chemical and should be handled with caution. When handling the reagent, it is important to wear protective clothing and eyewear and to avoid contact with skin and eyes.