【The action of propylene glycol methanol acetate】Production, inspection, and sales of industrial propylene glycol methanol acetate produced by esterification reaction using propylene glycol methyl ether and acetic acid as raw materials. Propylene glycol methanol acetateMainly used in industries such as coatings, electronics, printing and dyeing.

【 Method and Principle 】 Using gas chromatography, under selected working conditions, the sample is vaporized and separated by a capillary column, detected by a hydrogen flame detector, quantified by area normalization, and obtained by subtracting the moisture contentContent of propylene glycol methanol acetate and 2-methoxy-1-propanol acetate

Propylene glycol methanol acetateInstrument configuration and reagents:

Chromatographic analysis spectrum of propylene glycol methanol acetate

【GC-2020Type gas chromatographPerformance characteristics

1. Adopting320 x 240dot matrix5.7An inch large screen LCD Chinese display, real-time display of various temperatures and operating conditions, clear and intuitive content, truly realizing human-machine dialogue;
2Power on self-test, wide range self diagnostic function, can accurately determine the fault location and alarm;
3Six independent temperature controls (vaporization chamber and capillary vaporization chamber can be independently controlled), Five level program heating function;
4Overtemperature Protection function: If any circuit exceeds the set temperature, the instrument will automatically power off and sound an alarm;
5The vertical heating device of * makes sample vaporization more reliable, reduces the heat radiation generated in the vaporization chamber to the minimum, and ensures minimal temperature deviation inside the column box;
6Intelligent fuzzy control rear door opening system, automatically tracks temperature and dynamically adjusts The angle of the air door can achieve precise temperature control even near room temperature;
7Configure filling column head injection, glass lining injection, with diaphragm cleaning Functional capillary diversion/Non split injection device and capable of installing gas injectors;
8High precision dual stable gas path, capable of installing four types of detectors simultaneously;
9Optional electronic flow pressure display system with built-in workstation device.

Temperature control indicators
1.Temperature control range: room temperature 5℃～400℃ increment0.1℃
2.Temperature control accuracy: superior to±0.01℃

Program heating: Five step interval constant temperature time0～999minincrement0.1minTemperature increment0.1℃
Heating rate:200℃The biggest one below40℃/min 200℃Up to the biggest20℃/min

Main technical specifications of the detector

Hydrogen flame ionization detector（FID）

（1）Cylindrical collection electrode structure design, quartz nozzle, responsive*

（2）Detection limit:≤8×10g/s（HEXADECANE/isooctane）

（3）Baseline noise:≤2×10A

（4）Baseline drift:≤2×10A/30min

（5）Linear:≥10

Thermal conductivity detector（TCD）

（1）Adopting a semi diffusive structure

（2）The power supply adopts constant current control mode

（3）Sensitivity:≥2500mV·ml/mg（HEXADECANE/isooctane）.

（4）Baseline noise:≤20μV.

（5）Baseline drift:≤100μV/30min.