ASTM D1025-00(2004)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1025–00 (Reapproved 2004)
Standard Test Method for
,
Nonvolatile Residue of Polymerization-Grade Butadiene
This standard is issued under the fixed designation D1025; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4.5 Cooling Vessel, tightly covered, such as a glass desic-
cator, for cooling the evaporating dish before weighing.
1.1 Thistestmethodcoversthedeterminationofnonvolatile
4.6 Thermometer, range from−40 to 50°C, graduated in
material in polymerization-grade butadiene.
1°C intervals, mercury-filled.
1.2 The values stated in SI units are to be regarded as
standard.
5. Preparation of Apparatus
1.3 This standard does not purport to address all of the
5.1 Clean the evaporating dishes with a chromic-acid solu-
safety concerns, if any, associated with its use. It is the
tion or other suitable cleaning agent before each test.
responsibility of the user of this standard to establish appro-
(Warning—Causes severe burns. A recognized carcinogen.
priate safety and health practices and to determine the
Strong oxidizer. Contact with organic material may cause fire.)
applicability of regulatory limitations prior to use.
Remove the dishes from the cleaning solution with stainless-
2. Summary of Test Method steel forceps and handle only with forceps thereafter.Wash the
dishesthoroughly,firstwithtapwater,thenwithdistilledwater,
2.1 A measured volume of liquid butadiene is allowed to
and dry in the oven at 105°C for about 1 h, or until constant
evaporate at room temperature from a small glass evaporating
weightisobtained.Beforeweighing,coolthedishesforatleast
dish until only residue remains. The evaporation is then
30 min in the cooling vessel.
completed by heating the dish to a constant weight.
6. Procedure
3. Significance and Use
6.1 Weigh the evaporating dish to the nearest 0.1 mg on the
3.1 This test method is used to determine if there is any
analytical balance.
heavy material in the butadiene. It is possible that these
6.2 Chill the evaporating dish to ice temperature. Cool the
materials could be deleterious to a polymerization reaction.
butadiene and the graduated cylinder to about −20°C.
4. Apparatus (Warning—Extremely flammable gas under pressure. May
form explosive peroxides upon exposure to air. Harmful if
4.1 Balance, Analytical, capable of weighing to the nearest
inhaled. Irritating to eyes, skin, and mucous membranes.)
0.1 mg.
Determine the sample temperature to the nearest 1°C and
4.2 Evaporating Dish, glass, 80 mm in diameter and 45 mm
transfer 25 6 1 mL of sample to the evaporating dish. Record
in height.
the sample volume and temperature.
4.3 Graduated Cylinder, capacity of 25 mL, graduated in
6.3 Allow the sample to evaporate at room temperature in a
0.2-mL subdivisons.
well-ventilated hood. When evaporation is complete, place the
4.4 Oven, capable of maintaining a temperature of 105 6
evaporating dish in an oven at 105 6 5°C until a weight
5°C.
constant to 0.1 mg is obtained. Before each weighing, cool the
dishforatleast30mininthecoolingvessel.Betweeneachtwo
1 weighings, place the dish in the oven for at least 30 min.
This test method is under the jurisdiction of Committee D02 on Petroleum
ProductsandLubricantsandisthedirectresponsibilityofSubcommitteeD02.D0on
7. Calculation
Hydrocarbons for Chemical and
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