ASTM D1510-08
(Test Method)Standard Test Method for Carbon Black—Iodine Adsorption Number
Standard Test Method for Carbon Black<span class='unicode'>—</span>Iodine Adsorption Number
SIGNIFICANCE AND USE
The iodine adsorption number is useful in characterizing carbon blacks. It is related to the surface area of carbon blacks and is generally in agreement with nitrogen surface area. The presence of volatiles, surface porosity, or extractables will influence the iodine adsorption number. Aging of carbon black can also influence the iodine number.
SCOPE
1.1 This test method covers the determination of the iodine adsorption number of carbon black.
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 8) 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:D1510–08
Standard Test Method for
1
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 (´) 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 sodium thiosulfate solution, and the adsorbed iodine is ex-
pressed as a fraction of the total mass of black.
1.1 This test method covers the determination of the iodine
adsorption number of carbon black.
4. Significance and Use
1.2 The iodine adsorption number of carbon black has been
4.1 Theiodineadsorptionnumberisusefulincharacterizing
shown to decrease with sample aging. New SRB HT Iodine
carbon blacks. It is related to the surface area of carbon blacks
Standards have been produced that exhibit stable iodine
and is generally in agreement with nitrogen surface area. The
number upon aging. These SRB HT Iodine Standards are
presence of volatiles, surface porosity, or extractables will
recommended for daily monitoring (x-charts) of testing and for
influence the iodine adsorption number.Aging of carbon black
standardization of iodine testing (see Section 8) when target
can also influence the iodine number.
values cannot be obtained.
1.3
5. Apparatus
1.4 This standard does not purport to address all of the
5.1 Vials, glass, optically clear type, with polyethylene
safety concerns, if any, associated with its use. It is the
3
stoppers, 45 cm .
responsibility of the user of this standard to establish appro-
5.2 Gravity Convection Drying Oven, capable of maintain-
priate safety and health practices and determine the applica-
ing 125 6 5°C.
bility of regulatory limitations prior to use.
5.3 Buret, either of the following may be used:
3 3
5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm incre-
2. Referenced Documents
2
ment counter and zero reset control, or
2.1 ASTM Standards:
3
5.3.2 Buret, glass 25-cm , Class A, side-arm filling, gradu-
D 1799 Practice for Carbon Black—Sampling Packaged
3
ated in 0.05 cm and with automatic zero.
Shipments
3
5.4 Repetitive Dispenser, 25-cm capacity, 60.1% repro-
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
3
ducibility and calibrated to within 60.03-cm accuracy.
ments
5.5 Balance, analytical, with 0.1-mg sensitivity.
D 4483 Practice for Evaluating Precision for Test Method
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/
Standards in the Rubber and Carbon Black Manufacturing
min).
Industries
3
5.7 VolumetricFlask, 2000-cm with standard taper stopper.
D 4821 Guide for Carbon Black—Validation of Test
5.8 Funnel, large diameter, with standard taper joint to fit
Method Precision and Bias
3
the 2000-cm flask.
3
3. Summary of Test Method 5.9 Glass Bottle, amber, 2000-cm , with standard taper
stopper.
3.1 A weighed sample of carbon black is treated with a
3
5.10 Glass Jug, approximate capacity 20-dm .
portion of standard iodine solution and the mixture shaken and
5.11 Stirrer, approximately 300 by 300 mm for mixing.
centrifuged. The excess iodine is then titrated with standard
5.12 Stirrer, approximately 100 by 100 mm for titrating.
5.13 Desiccator.
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
5.14 Miscellaneous Class A Glassware, and equipment
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black
necessary to carry out the test as written.
Surface Area and Related Properties.
5.15 MechanicalShaker,withatleast1in.strokelengthand
Current edition approved Jan. 15, 2008. Published February 2008. Originally
approved in 1957. Last previous edition approved in 2007 as D 1510 – 07a.
a minimum of 240 strokes/min.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.16 Automatic Titrator.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.17 Redox Electrode, combined platinum ring electrode
Standards volume information, refer to the standard’s Document Summary page on
with an Ag/AgCl/KCl reference electrode and a ceramic frit.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D1510–08
3
5.18 Volumetric Flask, 500 cm with standard taper stopper. 7.2.6.3 Add sodium thiosulfate until the contents of the
3
5.19 Flask, 250 cm with ground glass stopper. iodine flask is a pale yellowish-green. Wash the buret tip and
the walls of the flask with water.
6. Reagents and Solutions
7.2.6.4 Add 5 drops of starch solution to the flask.
7.2.6.5 Continue adding sodium thi
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D1510–07a Designation:D1510–08
Standard Test Method for
1
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
1.1 This test method covers the determination of the iodine adsorption number of carbon black.
1.1.1Procedure A is the original procedure for this determination.
1.1.2Procedure 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 8) 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1799 Practice for Carbon BlackSampling Packaged Shipments
D 1900 Practice for Carbon BlackSampling Bulk Shipments
D 4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D 4821 Guide for Carbon BlackValidation of Test Method Precision and Bias
3. Summary of Test Method
3.1 A weighed sample of carbon black is treated with a portion of standard iodine solution and the mixture shaken and
centrifuged. The excess iodine is then titrated with standard sodium thiosulfate solution, and the adsorbed iodine is expressed as
a fraction of the total mass of black.
4. Significance and Use
4.1 The iodine adsorption number is useful in characterizing carbon blacks. It is related to the surface area of carbon blacks and
is generally in agreement with nitrogen surface area. The presence of volatiles, surface porosity, or extractables will influence the
iodine adsorption number. Aging of carbon black can also influence the iodine number.
5. Apparatus
3
5.1 Vials, glass, optically clear type, with polyethylene stoppers, 45 cm .
5.2 Gravity Convection Drying Oven , capable of maintaining 125 6 5°C.
5.3 Buret, either of the following may be used:
3 3
5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm increment counter and zero reset control, or
3 3
5.3.2 Buret, glass 25-cm , Class A, side-arm filling, graduated in 0.05 cm and with automatic zero.
3 3
5.4 Repetitive Dispenser, 25-cm capacity, 60.1% reproducibility and calibrated to within 60.03-cm accuracy.
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black Surface
Area and Related Properties.
Current edition approved Nov. 1, 2007.Jan. 15, 2008. Published December 2007.February 2008. Originally approved in 1957. Last previous edition approved in 2007 as
D 1510 – 07a.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D1510–08
5.5 Balance, analytical, with 0.1-mg sensitivity.
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/min).
3
5.7 Volumetric Flask, 2000-cm with standard taper stopper.
3
5.8 Funnel, large diameter, with standard taper joint to fit the 2000-cm flask.
3
5.9 Glass Bottle, amber, 2000-cm , with standard taper stopper.
3
5.10 Glass Jug, approximate capacity 20-dm .
5.11 Stirrer, approximately 300 by 300 mm for mixing.
5.12 Stirrer, approximately 100 by 100 mm for ti
...
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