ASTM D1510-02a

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1510 – 02a
Standard Test Method for
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Carbon Black—Iodine Adsorption Number
This standard is issued under the fixed designation D 1510; 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 pressed as a fraction of the total mass of black.
1.1 This test method covers the determination of the iodine
4. Significance and Use
adsorption number of carbon black.
4.1 The iodine adsorption number is useful in characterizing
1.1.1 Procedure A is the original procedure for this deter-
carbon blacks. It is related to the surface area of carbon blacks
mination.
and is generally in agreement with nitrogen surface area. The
1.1.2 Procedure B specifies an increased sample mass of
presence of volatiles, surface porosity, or extractables will
carbon black and volume of iodine solution (the ratio is the
influence the iodine adsorption number. Aging of carbon black
same as in Procedure A) which results in a simplified formula
can also influence the iodine number.
for the calculation of the iodine number.
1.2 The values stated in SI units are to be regarded as the
5. Apparatus
standard. The values given in parentheses are for information
5.1 Vials, glass, optically clear type, with polyethylene
only.
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stoppers, 45 cm .
1.3 The iodine adsorption number of carbon black has been
5.2 Gravity Convection Drying Oven, capable of maintain-
shown to decrease with sample aging. Standard values for
ing 125 6 5°C.
current SRB’s may be obtained from the Subcommittee Chair-
5.3 Buret, either of the following may be used:
man of D24.61.
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5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm incre-
1.4 This standard does not purport to address all of the
ment counter and zero reset control, or
safety concerns, if any, associated with its use. It is the
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5.3.2 Buret, glass 25-cm , Class A, side-arm filling, gradu-
responsibility of the user of this standard to establish appro-
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ated in 0.05 cm and with automatic zero.
priate safety and health practices and determine the applica-
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5.4 Repetitive Dispenser, 25-cm capacity, 60.1% repro-
bility of regulatory limitations prior to use.
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ducibility and calibrated to within 60.03-cm accuracy.
2. Referenced Documents 5.5 Balance, analytical, with 0.1-mg sensitivity.
5.6 Centrifuge, with minimum speed of 105 rad/s (1000
2.1 ASTM Standards:
r/min).
D 1799 Practice for Carbon Black—Sampling Packaged
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2 5.7 Volumetric Flask, 2000-cm with standard taper stopper.
Shipments
5.8 Funnel, large diameter, with standard taper joint to fit
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
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2 the 2000-cm flask.
ments
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5.9 Glass Bottle, amber, 2000-cm , with standard taper
D 4483 Practice for Determining Precision for Test Method
2 stopper.
Standards in the Rubber and Carbon Black Industries
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5.10 Glass Jug, approximate capacity 20-dm .
D 4821 Guide for Carbon Black—Validation of Test
2 5.11 Stirrer, approximately 300 by 300 mm for mixing.
Method Precision and Bias
5.12 Stirrer, approximately 100 by 100 mm for titrating.
3. Summary of Test Method 5.13 Desiccator.
5.14 Miscellaneous Class A Glassware, and equipment
3.1 A weighed sample of carbon black is treated with a
necessary to carry out the test as written.
portion of standard iodine solution and the mixture shaken and
5.15 Mechanical Shaker, with 1 in. stroke length and
centrifuged. The excess iodine is then titrated with standard
capable of 240 strokes/min.
sodium thiosulfate solution, and the adsorbed iodine is ex-
6. Reagents
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This test method is under the jurisdiction of ASTM Committee D24 on Carbon 6.1 Purity of Reagents—Unless otherwise stated, all chemi-
Black and is the direct responsibility of Subcommittee D24.21 on Adsorptive
cals shall be of reagent grade.
Properties of Carbon Black.
6.2 Iodine.
Current edition approved Nov. 10, 2002. Published December 2002. Originally
6.3 Potassium Iodide.
approved in 1957. Last previous edition approved in 2002 as D 1510 – 02.
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Annual Book of ASTM Standards, Vol 09.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 1510 – 02a
6.4 Potassium Dichromate. sequence until the endpoint of the pale sea-green color of
6.5 Potassium Iodate. chromic sulfate is reached.
6.6 Sodium Thiosulfate. 9.1.6.7 Record the titration value and repeat from 9.1.4 for
6.7 n-Amyl Alcohol. a duplicate determinat
...