Pyruvaldehyde was synthesized with acetone or 1, 2 propanediol as starting material respectively.
分别用丙酮和1,2丙二醇做原料合成了丙酮醛。
Polyurethane foam wastes were recycled by alcoholysis with 1, 2-propanediol. Polyol and amine compound were gained. Polyol compound was analyzed by infrared spectrum.
以1,2-丙二醇醇解废旧聚氨酯得到多元醇混合物和胺类化合物，红外光谱法分析了多元醇混合物。
A new spectrophotometric method for determining magnesium content in foodstuffs with EBT-1, 2-propanediol as color reagent was developed.
建立了EBT - 1,2 -丙二醇水溶液光度法准确测定食品中镁含量的新方法。
CONCLUSION Transfersulin system with azone and 1, 2-propanediol can improve the penetration efficiency on mice skin and eliminate the blood glucose.
结论：1,2 -丙二醇，月桂氮卓芯酮—胰岛素传递体经皮给药系统可进一步提高胰岛素传递体的透皮吸收效率，降低血糖。
Citral 1, 2-propanediol acetal was synthesized using citral and 1, 2-propanediol as raw materials and copper methanesulfonate as catalyst.
以柠檬醛和1,2 -丙二醇为原料，甲基磺酸铜为催化剂，合成了柠檬醛缩1,2 -丙二醇。
The butyraldehyde 1, 2-propanediol acetal is synthesized from the acetalization reaction of butyraldehyde and 1, 2-propanediol, and used iodine as catalysis.
以单质碘为催化剂，通过丁醛和1,2丙二醇反应合成了丁醛1,2丙二醇缩醛。
When both 1, 2-propanediol and 1, 3-propanediol are produced, it is difficult to tell what factors have a decisive effect on their selectivity.
在同时产生1,2 -丙二醇和1,3 -丙二醇的情况下，很难判断哪些因素对它们的选择性具有决定性作用。
When both 1, 2-propanediol and 1, 3-propanediol are produced, it is difficult to tell what factors have a decisive effect on their selectivity.
在同时产生1,2 -丙二醇和1,3 -丙二醇的情况下，很难判断哪些因素对它们的选择性具有决定性作用。
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