ASTM D1509-95(2000)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D1509–95 (Reapproved 2000)
Standard Test Methods for
Carbon Black—Heating Loss
This standard is issued under the fixed designation D 1509; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4.2 When larger samples are prepared for other tests, use an
open vessel of suitable dimensions so that the depth of the
1.1 These test methods cover the determination of the
black is no more than 10 mm during conditioning.
heating loss of carbon black at 125°C. This heating loss
4.3 Carbon black is hygroscopic. The amount of moisture
consists primarily of moisture, but other volatile materials may
absorbed is related to the surface area of the black and to the
also be lost. These test methods are not applicable to treated
relative humidity, ambient temperature, and time to which the
carbon blacks that contain added volatile materials, if moisture
material is exposed.
loss is to be measured.
1.2 The values stated in SI units are to be regarded as the
Method A—Convection–Gravity Oven Method
standard. The values given in parentheses are for information
only.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 Oven, gravity-convection type, capable of temperature
safety concerns, if any, associated with its use. It is the
regulation of within 61°C at 125°C and temperature unifor-
responsibility of the user of this standard to establish appro-
mity within 65°C.
priate safety and health practices and determine the applica-
5.2 WeighingBottle, low-form, 30 mm in height and 60 mm
bility of regulatory limitations prior to use.
in diameter, equipped with a ground-glass stopper.
5.3 Analytical Balance, having a sensitivity of 0.1 mg.
2. Referenced Documents
5.4 Desiccator.
2.1 ASTM Standards:
D 1799 Practice for Carbon Black—Sampling Packaged
6. Sampling
Shipments
6.1 Samples shall be taken in accordance with Practices
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
D 1799 or D 1900.
ments
6.1.1 Place the samples of carbon black in airtight sample
D 4483 Practice for Determining Precision for Test Method
containers. Allow the closed container to reach room tempera-
Standards in the Rubber and Carbon Black Industries
ture before starting the test.
3. Summary of Test Method
7. Procedure
3.1 A carbon black sample is weighed before and after
7.1 Dry the weighing bottle and the stopper, with the
heatingfor1hat125°C.Theobserveddifferenceinmassisthe
stopper removed, in the specified oven set at 125°C for 30 min.
heating loss.
Place the bottle and stopper in the desiccator and allow to cool
to room temperature. Weigh the bottle with stopper to the
4. Significance and Use
nearest 0.1 mg.
4.1 In addition to determining the heating loss (primarily
7.2 Weigh2gofcarbonblackintotheweighingbottletothe
moisture content) of carbon black, these drying conditions are
nearest 0.1 mg.
used to prepare samples prior to performing other carbon black
7.3 Place the weighing bottle, sample, and stopper in the
tests.
specified oven set at 125°C for 1 h with the stopper removed.
7.4 Replace the stopper and transfer the bottle and contents
to the desiccator. Remove the stopper and allow to cool to
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
room temperature. Replace the stopper on the weighing bottle
Black and is the direct responsibility of Subcommittee D24.31 on Non-Carbon
Black Components of Carbon Black.
and reweigh to the nearest 0.1 mg.
Current edition approved Oct. 10, 1995. Published December 1995. Originally
NOTE 1—Keep the stopper on the weighing bottle when transferring to
published as D 1509 – 57 T. Last previous edition D 1509 – 93a.
Annual Book of ASTM Standards, Vol 09.01. and from the desiccator to prevent loss of carbon black due to air currents.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1509
7.5 Repeat the procedure on a second sample. 0.070 %mustbeconsideredsuspect,thatis,tohavecomefrom
different sample populations. Such a decision dictates that
8. Calculation
some appropriate action be taken.
8.1 Calculatethepercentheatinglosstothenearest0.1 %as 10.3.2 Reproducibility— The pooled absolute reproducibil-
ity, R, of Method A heat loss has been established as 0.356 %.
follows:
Twosingletestresults(ordeterminations)producedinseparate
H 5 @~B 2 C!/~B 2A!# 3 100 (1)
laboratories that differ by more than 0.356 % must be consid-
where: ered suspect, that is, that they represent different sample
H 5 heating loss, %,
populations. Such a decision dictates that appropriate investi-
A 5 mass of weighing bottle and stopper, g,
gative or technical or commercial actions, or both, be taken.
B 5 mass of weighing bottle, stopper, and sample before
10.4 Bias—In test method terminology, bias is the differ-
heating, g, and
ence between an average test value and the reference (true) test
C 5 mass of weighing bottle, stopper, and sample after
property value. Reference values do not exist for this test
heat
...