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PAC-ASTM DHDA Distillation Analyzer
These should be used only after they have been proven to give results comparable to those obtained when using gas heat. The relative volatility of organic liquids can be used with other tests for identification and measurement of quality. Current edition approved June 10, NOTE 4—For low-boiling materials, cool the apparatus to room temperature before starting the test. D — 01 Designation: For narrow-boiling hydrocarbon materials, the value of K may be assumed as 0.
Have the bottom of the flask resting firmly in the hole of the heat shield. This test method provides a method of measurement of distillation range of volatile organic liquids. This test method also provides an empirical value of residue, solvent recovery capacity, and loss or non-recovery on heating.
Keywords NOTE 8—In cases of dispute, the parties involved may agree to designate either the manual or the automatic method to be the referee test method. Record the difference between and the sum of the residue plus recovery as distillation loss. Both bore corrections and either ice or steam standardization corrections are recommended. Thank you for interesting in our services. If a dry point is not obtained that is, if active decomposition should occur before the dry point is reached, as evidenced by a rapid evolution of vapor or heavy fumes; or if there is liquid remaining on the bottom of the flask when the maximum temperature is observed on the distillation thermometerrecord this fact.
NOTE 6—For viscous liquids, a longer drainage period may be necessary to complete the transfer of the specimen to the flask, but the drainage time should not exceed 5 min. Another technique is to distill pure toluene This can be accomplished potentiometrically by the use of standard precision resistance, depending on the type of probe.
Historical Version s – view previous versions of standard. A small but statistically significant bias was indicated for the automatic and manual D dry point DP.
HDA 620: Distillation Analyzer
Ten laboratories did automatic D distillation, and five laboratories did manual D distillation. We need your help! Originally published as D — 49 T. NOTE 2—Toluene is shown in reference manuals as boiling at Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. Measure the volume and record it as residue. 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.
Please fill this form, we will try to respond as soon as possible. Summary of Test Method 4. IBP 50 75 r 0. Record the temperature at this point as the dry point Section 3. Specific hazard statements are given in Section 7.
For low-boiling materials, d108 the heating unit to room temperature before starting the test. Therefore, this test method provides a qstm procedure for assessing compliance with a specification. Link to Active This link will always route to the current Active version of the standard.
Specific hazard statements are given in Section 7. Table 6 gives a summary of the relative bias observed for the samples used in the study. Last previous edition D — Remove the flask astj 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 you want to embed Embed Script. Caution should be taken when handling mercury and mercury-containing products.
This standard has been approved for use by agencies of the Department of Defense.
We are a non-profit group astk run this website to share documents. Record the temperature and report as the decomposition point Section 3. Specific 3 D factors conducive to superheating are as follows, and should be avoided: Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.
Any variation sstm result in heating a larger portion of surrounding air to a higher temperature than that of the flask. Factors Causing Superheating 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.