Raw data of gas hydrate equilibrium measurements for CH4 – MeOH – MgCl2 – H2O system and ice freezing point determination of aqueous MeOH and MgCl2 solutions

The raw data of the temperature and pressure measurements of the three-phase equilibrium (vapor – aqueous solution – gas hydrate) in the system methane – methanol – magnesium chloride – water is collected in the archive “Gas hydrate equilibrium (CH4-MeOH-MgCl2-H2O)”. A total of 164 equilibrium points have been measured. This includes the methane – water system (no inhibitors). For each of them there is a separate .xlsx file in the archive with columns of numerical values of the following parameters measured: time (column A), temperature setpoint (°C, column B), temperature in the autoclave (°C, column C), temperature of the coolant (°C, column D), gauge pressure (bar, column E), stirrer speed (rpm, column F), and stirrer torque (N·cm, column K). The file name specifies the number of the equilibrium point and the feed composition of the aqueous solution sample (in mass%). For example, the file "point 21_10.01% MeOH" consists of the raw data for the 21st equilibrium point (numbering from Table 1 of the data paper [2]) for aqueous methanol solution with alcohol concentration of 10.01 mass%.
The raw data from the determination of ice freezing temperatures of methanol and magnesium chloride aqueous solutions at ambient pressure can be found in the "Ice freezing points (MeOH-MgCl2-H2O)" archive. There are files for 53 ice freezing point measurements. The file name indicates the number of the measurement and the concentration of the solute (methanol (MeOH) or magnesium chloride (MgCl2)) or a mixture of them in mass% in aqueous solution. The numbers correspond to Table 10 of the co-submitted data paper [2]. Each .xlsx file has a column with the recorded temperatures of the sample at the specified time (one T value per two seconds).

The raw data is linked to the papers:
[1] Anton P. Semenov, Rais I. Mendgaziev, Vladimir A. Istomin, Daria V. Sergeeva, Vladimir A. Vinokurov, Yinghua Gong, Tianduo Li, Andrey S. Stoporev (2024) Searching for synergy between alcohol and salt to produce more potent and environmentally benign gas hydrate inhibitors // Chemical Engineering Science, 283, 119361 DOI: 10.1016/j.ces.2023.119361
[2] Anton P. Semenov, Rais I. Mendgaziev, Vladimir A. Istomin, Daria V. Sergeeva, Vladimir A. Vinokurov, Yinghua Gong, Tianduo Li, Andrey S. Stoporev (2024) Data on searching for synergy between alcohol and salt to produce more potent and environmentally benign gas hydrate inhibitors // Data in Brief, 53, 110138 DOI: 10.1016/j.dib.2024.110138