Method for testing 3-chlorine-1, 2-propylene glycol and aliphatic ester content of 3-chlorine-1, 2-propylene glycol

• Main Authors: CHENG PENG, ZHANG WEINONG, QI YUTANG, HU ZHIXIONG
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2012
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for testing 3-chlorine-1, 2-propylene glycol. The method comprises the steps: (1) oxidizing the 3-chlorine-1, 2-propylene glycol in a water solution into chloroacetaldehyde; (2) performing derivatization to subject the chloroacetaldehyde and a derivatization reagent to a reaction to produce substances with fluorescent effects; and (3) using a high performance liquid chromatograph-forming limit diagram (HPLC-FLD) method to perform testing, and obtaining content of 3-chlorine-1, 2-propylene glycol. Compared with an existing gas chromatography-mass spectrometer (GC-MS) method, the method is simple in operation, equipment investment is greatly reduced, an expensive deuterated master standard is not needed, the using cost is greatly reduced, and barriers are cleared for addition of testing indexes of 3-chlorine-1, 2-propylene glycol for relative products. 3-chlorine-1, 2-propylene glycol aliphatic ester is converted into 3-chlorine-1, 2-propylene glycol by ester exchange so that th