ASTM D611 for aniline point and mixed aniline point
ASTM D611 standard test methods for aniline point and mixed aniline point of petroleum products and hydrocarbon solvents
A4. TEST METHOD D
A4.1 Apparatus
A4.1.1 Bulb, 1.5 to 2.0-mL capacity, blown from heat-resistant glass tubing, 5 mm in external diameter and 3 mm in internal diameter.
A4.1.2 Guard, as for Test Method C.
A4.2 Procedure
A4.2.1 Dry the bulb thoroughly in an oven at 105 more or less 5°C, allow it to cool to room temperature, and charge it by means of the pipets with 0.5 mL of aniline (Warning - See 7.1) and 0.5 mL of the dried sample (8.1). Cool the mixture thoroughly and rapidly draw out and seal the open end of the bulb at about 10 mm from the center of the bulb. (Warning - Put on goggles of safety glass and plastic gloves impervious to aniline.)
A4.2.2 Attach the bulb to the thermometer by rubber bands so that the bulb is adjacent to the thermometer bulb. Attach the mesh guard and follow the procedure described in A1.2.2 and A1.2.3 but mix the sample and aniline by shaking.
A4.2.3 Repeat the observation of aniline point temperature by heating and cooling repeatedly until a report as directed in Section 11 can be made.
