ASTM Dpdf – Download as PDF File .pdf), Text File .txt) or read online. – Download as PDF File .pdf), Text File .txt) or read online. ASTM Dpdf. November 29, | Author: Nok Chan | Category: Distillation, Thermometer, Electric Heating, Liquids, Temperature.
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A These thermometers have d10778 temperature lag than the other thermometers listed herein and adtm not satisfactory for use with narrow-boiling range liquids. It was found that the precision is dependent on the boiling point temperature. The c1078 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 overall construction.
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. Last previous edition D — NOTE 2—Toluene is shown in reference manuals as boiling at Caution should be taken when c1078 mercury and mercury-containing products.
Specific hazard statements are given in Section 7. Please help us to share our service with your friends. Compound 6 The sole source of supply of the Lo-Cap heater known to the committee at this time is Precision Scientific Co.
ASTM D – 01 Standard Test Method for Distillation Range of Volatile Organic Liquids
D — 01 Designation: Thank you for interesting in our services. Insert the thermometer as described in 8. Other means can be employed, such as the use of a platinum-resistance thermometer or 1d078 National Bureau of Standards thermometer.
This can be accomplished potentiometrically by the use of standard precision resistance, depending on the type of probe.
Organic liquids are used as solvents in many chemical processes. As the relative volatility, residual matter and recovery capability affect the efficiency of these processes, this test method is useful in manufacturing control. Specific hazard statements are given in Section 7. Specific 3 D factors conducive to superheating are as follows, and should be avoided: The observed bias if any are only for the samples studied and may not be necessarily applicable to other samples.
Please fill this form, we will try to respond as soon as possible. Do not allow any of the specimen to enter the vapor tube.
NOTE 1—Liquid superheating in a new flask may be prevented by depositing a small amount of carbon in the bottom of the flask. The relative volatility of organic liquids can be used with other tests for identification and measurement of quality.
Ten laboratories did automatic D distillation, and five laboratories did manual D distillation. See Section 9 for factors that cause superheating, and Appendix X1 for a discussion on the use of electric heaters. The study involved six samples of different boiling point ranges, done in duplicate.
Therefore, this test method provides a test procedure for assessing compliance with a specification. These should be used only after they have been proven to give results comparable to those obtained when using gas heat.
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 the distillation flask. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Factors Causing Superheating Precision and Bias Have the bottom of the flask resting firmly in the hole of the heat shield. Record the difference between and the sum of the residue plus recovery as distillation loss. If no definite manner of reporting is specified, report the corrected temperatures at each observed volume, and report the volume percentages of residue, recovery, and distillation loss.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The flask is then prepared for use by washing with water, rinsing with acetone, and drying.
PAC-ASTM DHDA Distillation Analyzer
Current edition approved June 10, We need your help! Remove the flask from the apparatus and transfer the fresh specimen directly to the flask, allowing the graduate to drain for 15 to 20 s. Please copy and paste this embed script to where satm want to embed Embed Script.