FIELD: analytical methods for petroleum products. SUBSTANCE: invention aims at increasing reliability of evaluation of vaporability of mineral lubricating oils by way of increasing amount of evaporated oil on heating in laboratory conditions with no chemical changes in the oil itself. The aim is achieved through addition to oil of N,N- dimethylformamide as scavenger at ratio 1:(1.9-2.1), carrying out evaporation at 154±1 C (below temperature of the beginning of decomposition of most heat-sensitive additive) under vacuum for 2 h. EFFECT: increased reliability of analyses. 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| TECHNIQUE EVALUATING THERMAL OXIDIZING STABILITY OF OILS FOR AIRCRAFT GAS-TURBINE ENGINES | 1999 |
|
RU2156973C1 |
| PROCESS EVALUATING SEDIMENTATION STABILITY OF MOTOR OILS | 1998 |
|
RU2138047C1 |
| METHOD OF MOTOR FUELS PHYSICAL STABILITY DETERMINING DURING THEIR STORAGE IN STATIONARY RESERVOIRS (TANKS) | 2015 |
|
RU2608456C2 |
| METHOD ESTABLISHING QUALITY OF LUBRICATING OILS WITH ALKALINE ADDITIVES | 2001 |
|
RU2212032C2 |
| METHOD OF EVALUATING QUALITY OF MINERAL-BASED SOAP GREASE DURING PROLONGED STORAGE IN SEALED CONTAINER | 2013 |
|
RU2524646C1 |
| METHOD OF EVALUATION OF ENERGY-SAVING PROPERTIES OF MOTOR OILS | 2001 |
|
RU2206090C2 |
| METHOD FOR DETERMINING THE SHELF LIFE OF EURO DIESEL FUELS | 2022 |
|
RU2794152C1 |
| METHOD OF PREPARING VISCOUS LUBRICANT | 1999 |
|
RU2160767C1 |
| EVALUATION UNIT OF DETERGENT PROPERTIES OF OILS WITH ADDITIVES | 2011 |
|
RU2482466C1 |
| METHOD OF ASSESSMENT OF ANTIFREEZES PROTECTIVE ABILITY | 1999 |
|
RU2153662C1 |
