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NOTE 2—Toluene is shown in reference manuals as boiling at Please fill this form, we will try to respond as soon as possible. Other means can be employed, such as the use of a platinum-resistance thermometer or a National Bureau of Standards thermometer.
If no thermometer is specified, select one from Table 1 with the smallest graduations that will cover the entire distillation range of the material. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. The study involved six samples of different boiling point ranges, done in duplicate.
Any variation would result in heating a larger portion of surrounding air to a higher temperature than that of the flask. Preparation of Apparatus 8. It was found that the precision is dependent on the boiling point temperature. Remove the flask from the apparatus and transfer the fresh specimen v1078 to the flask, allowing the graduate to drain for 15 to 20 s. Significance and Use 5. Precision and Bias This test method also provides an empirical value of residue, solvent recovery capacity, and loss or non-recovery on heating.
Last previous edition D — Link to Active This link will always route to the current Active version of the standard.
ASTM Dpdf – Free Download PDF
Insert the thermometer as described in 8. Place the receiver, without drying, at the outlet of the condenser tube in such a position that the condenser tube extends into the graduate at least 25 mm but does not extend below the mL mark. For low-boiling materials, cool the heating unit to room temperature before starting the test.
Thank you for interesting in our services. Current edition approved June 10, As a general guide, it is recommended that: As the relative volatility, residual matter and recovery capability affect the efficiency of these processes, this test method is useful in manufacturing control.
This may be accomplished by heating and decomposing a pinch of tartaric acid in the bottom of the flask. A small but statistically significant bias was indicated for the automatic and manual D dry point DP. Please help us to share our service with your friends.
Organic liquids are used as solvents in many chemical processes. We need your help to maintenance this website. The superheating effect obtained from electric heaters may be minimized, but not completely eliminated, by selecting a heater that, by its design, concentrates the heating elements to a minimum area, and contains a minimum amount of ceramic material in its zstm construction.
ASTM D – 01 Standard Test Method for Distillation Range of Volatile Organic Liquids
Organic liquids are used as solvents in many chemical processes. Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. No other units of measurement are included in this standard. Measure the volume and record it as residue. Another technique is to distill pure toluene In the operation of the distillation apparatus, use a suitable catch pan and shielding to contain spilled liquid in the event of accidental breakage of qstm distillation flask.
The temperature of the mercury in the thermometer is equilibrated with that of the refluxing liquid before the distillate is taken over. As the relative volatility, residual matter and recovery capability affect the efficiency of these processes, this test method is useful in manufacturing control.
Mercury, or its vapor, may aztm hazardous to health and corrosive to materials. Place a flat cover on the top of the graduate to prevent condensed moisture from entering the graduate.
The observed bias if any are only for the samples studied and may not wstm necessarily applicable to other samples. Table 6 gives a summary of the relative bias observed for the samples used in the study. Therefore, this test method provides a test procedure for assessing compliance with a specification. Transfer the fresh specimen directly to the flask, allowing the receiver to drain for 15 to 20 s see Note 6.