The density of a rubber chemical is used for calculating the rubber compound volume, which is used to determine the cost of a rubber product. The density may . Standard Test Method for Rubber Chemicals—Density – ASTM D standard is invalid. Hide. Search. Start. Standard ASTM standard · ASTM D . Purchase your copy of ASTM D – 05() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards.

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ASTM D e1. A number in parentheses indicates the year of last reapproval.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. It v1817 intended for determining the density of the rubber chemical itself and not for the determination of the effective density of the chemical in a rubber.

It is the ast, of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Summary of Test Method 3. The density may also be used as a raw material control tool. NOTE 1—The weld type with the cap seal on the outside of the neck of the bottle is preferred because there is less danger of trapping air just under astk capillary tube than with types having the ground seal on the inside of the neck.

The stopper may contain a thermometer. However, the control of the temperature is through the adjustment of the water bath rather than by this thermometer.

The s1817 of the measuring device should be asm least kPa for differential pressure meters and at least 10 kPa for absolute pressure meters. The desiccator should be enclosed in a sturdy box or shield to prevent possible injury to the operator. Grind any lumps, pellets, etc.


Other immersion liquids such as ethylene glycol, tetrahydronaphthalene, etc. If an immersion liquid cannot be found that meets these solubility requirements, 5. Current edition approved Jan.

ASTM International

Originally published as D — 61 T. Last previous edition D — 90 e1. Standardization of Pycnometer 8. Empty the pycnometer, then clean, dry, and reweigh it. Remove from the bath, dry, and weigh as before. Asym the density of the immersion liquid as follows: In no case should a mixed liquid be used in which any component has an appreciable vapor pressure.

ASTM D – 05() – Standard Test Method for Rubber Chemicals. Density

A 5 mass of immersion liquid, and B 5 mass of water, 0. Weigh rubber chemicals of a hygroscopic aastm from a weighing bottle. When necessary, swirl the contents of the pycnometer by hand, to wet the sample.

Take care not to decrease the pressure too quickly, otherwise some of the sample may be lost due to the sudden removal of the entrapped air. A pinch-cock may be used to control the rate of evacuation. The pressure meter is used to indicate whether the oil pump is giving the proper vacuum, which is an absolute pressure of 0. Bubbles of air rise from the sample rapidly at?

The time required for complete removal of air may vary from 30 min to 24 h. When no more bubbles can be seen, it may be assumed that occluded air has been removed and the rubber chemical is thoroughly wet with immersion liquid.


Slowly readmit air to the desiccator. NOTE 2—If an immersion liquid is used whose vapor pressure is greater than 0.

The use of such immersion liquids should be limited to those cases in which no low vapor 9. Insert the stopper, being careful not to trap any d11817 bubbles. Place the pycnometer in the water bath and permit it to come to constant temperature at 25 6 0. Remove from the water bath, wipe the end of the capillary with lint-free toweling or lens paper, making sure not to suck any liquid from the capillary. Dip the pycnometer up to the side arm in a beaker of alcohol to remove any residual immersion liquid.

Thoroughly dry the outside of the pycnometer and weigh.

Standard Test Method for Rubber Chemicals—Density

P 5 mass of rubber chemical used, S 5 density of the immersion liquid, K 5 mass of the pycnometer? Precision and Bias Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.