ASTM D1025-96

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1025 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Nonvolatile Residue of Polymerization Grade
1,2
Butadiene
This standard is issued under the fixed designation D 1025; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Preparation of Apparatus
1.1 This test method covers the determination of nonvolatile 5.1 Clean the evaporating dishes with a chromic-acid solu-
material in polymerization-grade butadiene. tion before each test. (Warning—See Note 1.) Remove the
1.2 The values stated in SI units are to be regarded as dishes from the cleaning solution with stainless-steel forceps
standard. The values stated in inch-pound units are for infor- and handle only with forceps thereafter. Wash the dishes
mation only. thoroughly, first with tap water, then with distilled water, and
1.3 This standard does not purport to address all of the dry in the oven at 105°C for about 1 h, or until constant weight
safety concerns, if any, associated with its use. It is the is obtained. Before weighing, cool the dishes, for at least 30
responsibility of the user of this standard to establish appro- min, in the cooling vessel.
priate safety and health practices and to determine the
NOTE 1—Warning: Causes severe burns. A recognized carcinogen.
applicability of regulatory limitations prior to use.
Strong oxidizer. Contact with organic material may cause fire.
2. Summary of Test Method
6. Procedure
2.1 A measured volume of liquid butadiene is allowed to
6.1 Weigh the evaporating dish to the nearest 0.1 mg on the
evaporate at room temperature from a small glass evaporating
analytical balance.
dish until only residue remains. The evaporation is then
6.2 Chill the evaporating dish to ice temperature. Cool the
completed by heating the dish to a constant weight.
butadiene and the graduated cylinder to about −20°C.
(Warning—See Note 2.) Determine the sample temperature to
3. Significance and Use
the nearest 1°C and transfer 25 6 1 mL of sample to the
3.1 This test method is used to determine if there is any
evaporating dish. Record the sample volume and temperature.
heavy material in the butadiene. It is possible that these
6.3 Allow the sample to evaporate at room temperature in a
materials could be deleterious to a polymerization reaction.
well-ventilated hood. When evaporation is complete, place the
evaporating dish in an oven at 105 6 5°C until a weight
4. Apparatus
constant to 0.1 mg is obtained. Before each weighing, cool the
4.1 Balance, Analytical, capable of weighing to the nearest
dish for at least 30 min in the cooling vessel. Between each two
0.1 mg.
weighings, place the dish in the oven for at least 30 min.
4.2 Evaporating Dish, glass, 80 mm in diameter and 45 mm
in height. NOTE 2—Warning: Extremely flammable gas under pressure. May
form explosive peroxides upon exposure to air. Harmful if inhaled.
4.3 Graduated Cylinder, capacity of 25 mL, graduated in
Irritating to eyes, skin, and mucous membranes.
0.2-mL subdivisons.
4.4 Oven, capable of maintaining a temperature of 105 6
7. Calculatio
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