GB/T 22052-2008Test method for vapor pressure -- Temperature relationship and initial decomposition temperature of liquids by isoteniscope (English PDF)

GB/T 22052-2008 is the English-translated version of 用液体蒸气压力计测定液体的蒸气压力和温度关系及初始分解温度的方法.

GB/T 22052-2008 — This standard includes a pure liquid vapor pressure, vapor pressure of the mixture (in a sealed tube, filling amount when 40% ± 5%) and pure liquid Hot body and the initial decomposition temperature of the liquid mixture is measured.

This standard applies to the test temperature, the vapor pressure of borosilicate bottle in Determination of the liquid vapor pressure 133Pa ~ 101.3kPa between.

This test method is suitable for the temperature range from ambient temperature to 748K. Such as providing a suitable thermostatic bath, the temperature range may be lower than the environment temperature.

NOTE. Liquid vapor pressure gauge is a constant volume device, which measures the use of different Results mixing with other liquids of constant distillation. Most petrochemical products boiling point of the range is very wide, which can study their vapor pressure to learn.

Even the symbol Raoult's law over the combined mixture, after the lighter components are separated, the vapor pressure will gradually decrease, in particular ingredients mixed Miscellaneous mixture, e.g., the preparation of lubricating oil solvent dewaxing process.

Release pressure of the mixture in a closed container may be higher than that calculated by the average pressure was 100 times higher ingredient, liquid vapor pressure gauge may be used to simulate a closed container.

To determine the open system of surface evaporation Gas pressure, recommended reference standard ASTMD2878. This standard has nothing to do with safety, only use correlation.

Former user of this standard, has the responsibility to establish appropriate safety and health regulations Fan. Its special hazard statements, see 6.5,6.10 and 6.12.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.

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