ASTM D1620-60 (1969)

Method of Test for Volatile Content of Carbon Black (Withdrawn 1972)

General Information

• Status: Withdrawn
• Technical Committee: D24 - Carbon Black

Standards Content (Sample)

~~I~ Designation: D 1620 - 60 (Reapproved 1969)
NOTICE: This material may be protecteu
by copyright law (Title 17, U.S. Code)
Standard Method of Test for
1
VOLATILE CONTENT OF CARBON BLACK
This Standard is issued under the fixed designation D 1620; 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
The committee responsible for this standard has voted its withdrawal. In the absence of substantial
reasons that it should be continued, the Society will approve its withdrawal from publication in July 1973•
1. Scope below the cover line (Note 2). The small air
2
space is necessary to ailow for expansion of
1.1 This method covers the determina­
the escaping volatile matter, thus preventing
tion of the volatile material other than mois­
the raising of the cover and possible oxidation
ture in carbon black (Note 1). The volatile
of the black. The crucible cover should fit
content test applies more specifically to those
firmly in place, but should have sufficient
blacks used by the paint and ink industry.
clearance to permit the volatile matter to es­
NOTE 1-Since the air space in the crucible for
cape.
an unpelleted black is higher than that for a pel­
leted black, greater oxidation of the sample will
NOTE 2-This is designed primarily for pelleted
result in an apparent high volatile content value
carbon blacks. Where the volatile content of un­
for the unpelleted black.
pelleted carbon black is desired, firmly tamp the
black in the crucible to minimize oxidation.
2. Apparatus
3.4 Weigh the crucible, cover, and con­
3
2.1 Electric Furnace, capable of tem­
tents to the nearest 0.1 mg.
perature regulation of ±20 C at 950 C, and
3.5 Ignite the covered crucible and contents
equipped with a thermocouple-activated indi­
in the electric furnace for exactly 7 min at a
cating pyrometer.
temperature of 950 ± 20 C (see Section 5).
2.2 Platinum Crucible, 20-ml capacity,
3.6 Remove the crucible to the desiccator,
equipped with insert form cover.
allow to cool to room temperature, and weigh
2.3 Interval Timer, checked for accuracy.
to the nearest 0.1 mg.
2.
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