D-maltose / amylose /4-o- α- D-glucopyranosyl-d-glucose /maltose
Item No.： C0057
Store at： RT
English name：Maltose
Other names: Starch sugar
CAS No.: 69-79-4
C12H22O11 = 342.30
PH value (10% aqueous solution): 4.0 ~ 7.0
Dextrin and soluble starch: yellow
Heavy metals: ≤ 5ppm
Physicochemical properties: white crystalline powder, sweet. The sweetness is 40% of sucrose, and the melting point is 102 ~ 103 ℃. Density (17 ℃) 1.540g/cm3. Soluble in water, slightly soluble in ethanol, insoluble in ether. Right optical rotation
Purpose: scientific research and experiment. There are aldehyde groups in the molecular structure of bud sugar, which is a reducing sugar with reducibility. Therefore, silver mirror reaction can occur with silver ammonia solution, and brick red precipitation can be formed by reaction with newly prepared alkaline copper hydroxide. It can be hydrolyzed under certain conditions to produce two molecules of glucose. Used as biological culture medium, polysulfide determination agent, analytical chemistry colorimetry standard brown
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