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Insert the thermometer as described in 8. Table 6 gives a summary of the relative bias observed for the samples used in the study.
A These thermometers have more temperature lag than the other thermometers listed herein and are not satisfactory for use with narrow-boiling range liquids. 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 asm use.
HDA 620: Distillation Analyzer
Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. If an agreement on which method to designate cannot be made, the referee test method will be the manual method. Another technique is to distill pure toluene NOTE 1—Liquid superheating in a new flask may be prevented by depositing a small amount of carbon in the bottom of the flask. Do not allow any of the specimen to enter the vapor tube.
Confirmation of the calibration of these temperature sensors shall be done at regular intervals. These should be used only after they have been proven to give results comparable to those obtained when using gas heat. If yields are not obtained within these limits, repeat the test.
Factors Causing Superheating Please fill this form, we will try to respond as soon as possible. This test method provides a method of measurement of distillation range of volatile organic liquids. The observed bias if any are only for the samples studied and may not be necessarily applicable to other samples. The fulfillment of these requirements will reduce, but not completely eliminate, the amount of extraneous heat radiating around the perimeter of the asbestos-cement board on which the distillation flask is placed.
Please help us to share our service with your friends. Historical Version s – view previous versions of standard. Organic liquids are used as solvents in many chemical processes.
Record the difference between and the aastm of the residue plus recovery as distillation loss. For low-boiling materials, cool the heating unit to room temperature before starting the test. For narrow-boiling hydrocarbon materials, the value of K may be assumed as 0.
D — 01 Designation: Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may satm. Both bore corrections and either ice or steam standardization corrections are recommended. Have the bottom of the flask resting firmly in the hole of the heat shield.
PAC-Lab Instruments-ASTM D
This standard has been approved for use by agencies of the Department of Defense. As a general guide, it is recommended that: NOTE 4—For low-boiling materials, cool the apparatus to room temperature before starting the test.
Organic liquids are used as solvents in many chemical processes. Boiling temperatures observed on a partial immersion thermometer are corrected to standard atmospheric pressure to satm true boiling temperatures.
Center the thermometer into the neck of the flask through a tight-fitting cork stopper so that the upper end of the contraction chamber or bulb if Thermometer 2C or IP thermometer 62C is used is level with the lower side of the vapor tube at its junction with the neck of the flask. Other means can be employed, such as the use of a platinum-resistance thermometer or a National Bureau of Standards thermometer. We need your help to maintenance this website. Record the readings of the distillation thermometer after collecting 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 95 mL of distillate.
See Section 9 for factors that cause superheating, and Appendix X1 for a discussion on the use of electric heaters. Current edition approved June 10,