ASTM D1510-05a
(Test Method)Standard Test Method for Carbon Black—Iodine Adsorption Number
Standard Test Method for Carbon Black—Iodine Adsorption Number
SCOPE
1.1 This test method covers the determination of the iodine adsorption number of carbon black.
1.1.1 Procedure A is the original procedure for this determination.
1.1.2 Procedure B specifies an increased sample mass of carbon black and volume of iodine solution (the ratio is the same as in Procedure A) which results in a simplified formula for the calculation of the iodine number.
1.2 The iodine adsorption number of carbon black has been shown to decrease with sample aging. New SRB HT Iodine Standards have been produced that exhibit stable iodine number upon aging. These SRB HT Iodine Standards are recommended for daily monitoring (x-charts) of testing and for standardization of iodine testing (see Section 10) when target values cannot be obtained.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D1510–05a
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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope Standards in the Rubber and Carbon Black Manufacturing
Industries
1.1 This test method covers the determination of the iodine
D 4821 Guide for Carbon Black—Validation of Test
adsorption number of carbon black.
Method Precision and Bias
1.1.1 Procedure A is the original procedure for this deter-
mination.
3. Summary of Test Method
1.1.2 Procedure B specifies an increased sample mass of
3.1 A weighed sample of carbon black is treated with a
carbon black and volume of iodine solution (the ratio is the
portion of standard iodine solution and the mixture shaken and
same as in Procedure A) which results in a simplified formula
centrifuged. The excess iodine is then titrated with standard
for the calculation of the iodine number.
sodium thiosulfate solution, and the adsorbed iodine is ex-
1.2 The iodine adsorption number of carbon black has been
pressed as a fraction of the total mass of black.
shown to decrease with sample aging. New SRB HT Iodine
Standards have been produced that exhibit stable iodine
4. Significance and Use
number upon aging. These SRB HT Iodine Standards are
4.1 Theiodineadsorptionnumberisusefulincharacterizing
recommended for daily monitoring (x-charts) of testing and for
carbon blacks. It is related to the surface area of carbon blacks
standardization of iodine testing (see Section 10) when target
and is generally in agreement with nitrogen surface area. The
values cannot be obtained.
presence of volatiles, surface porosity, or extractables will
1.3 The values stated in SI units are to be regarded as the
influence the iodine adsorption number.Aging of carbon black
standard. The values given in parentheses are for information
can also influence the iodine number.
only.
1.4 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Vials, glass, optically clear type, with polyethylene
responsibility of the user of this standard to establish appro-
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stoppers, 45 cm .
priate safety and health practices and determine the applica-
5.2 Gravity Convection Drying Oven, capable of maintain-
bility of regulatory limitations prior to use.
ing 125 6 5°C.
5.3 Buret, either of the following may be used:
2. Referenced Documents
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2 5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm incre-
2.1 ASTM Standards:
ment counter and zero reset control, or
D 1799 Practice for Carbon Black—Sampling Packaged
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5.3.2 Buret, glass 25-cm , Class A, side-arm filling, gradu-
Shipments
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ated in 0.05 cm and with automatic zero.
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
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5.4 Repetitive Dispenser, 25-cm capacity, 60.1% repro-
ments
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ducibility and calibrated to within 60.03-cm accuracy.
D 4483 Practice for Evaluating Precision for Test Method
5.5 Balance, analytical, with 0.1-mg sensitivity.
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/
min).
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This test method is under the jurisdiction ofASTM Committee D24 on Carbon
5.7 VolumetricFlask, 2000-cm with standard taper stopper.
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black
5.8 Funnel, large diameter, with standard taper joint to fit
Surface Area and Related Properties.
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the 2000-cm flask.
Current edition approved Dec. 15, 2005. Published January 2006. Originally
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approved in 1957. Last previous edition approved in 2005 as D 1510 – 05.
5.9 Glass Bottle, amber, 2000-cm , with standard taper
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
stopper.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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5.10 Glass Jug, approximate capacity 20-dm .
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.11 Stirrer, approximately 300 by 300 mm for mixing.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D1510–05a
5.12 Stirrer, approximately 100 by 100 mm for titrating. 9.1.6.6 Wash the tip and walls of the flask with water, then
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5.13 Desiccator. advance the counter in 0.01-cm increments. Continue this
sequence until the endpoint is reached as indicated by a
5.14 Miscellaneous Class A Glassware, and equipment
necessary to carry out the test as written. colorle
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