化學名稱:(R)- 4- 氰基 -3- 羥基 - 丁酸乙酯 (R)-4-cyano-3-hydroxybutyric acid ethyl ester Test Item Standard Appearance Colorless to light yellow liquid Density (g/ml) 1.1 -1.2 Specific Rotation (-29.0 )- (-35.0) Assay (%) More than 98.0% Water (%) Less than 0.5 Packing Size Less than 1Kg : Plastic Bottles Less than 20 Kg : Standard Plastic buckets for export More than 20 Kg : Standard Plastic buckets for export Note Liquid