ASTM D1510-08a
(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 standard. No other units of measurement are included in this standard.
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:D1510–08a
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 centrifuged. The excess iodine is then titrated with standard
sodium thiosulfate solution, and the adsorbed iodine is ex-
1.1 This test method covers the determination of the iodine
pressed as a fraction of the total mass of black.
adsorption number of carbon black.
1.2 The iodine adsorption number of carbon black has been
4. Significance and Use
shown to decrease with sample aging. New SRB HT Iodine
4.1 Theiodineadsorptionnumberisusefulincharacterizing
Standards have been produced that exhibit stable iodine
carbon blacks. It is related to the surface area of carbon blacks
number upon aging. These SRB HT Iodine Standards are
and is generally in agreement with nitrogen surface area. The
recommended for daily monitoring (x-charts) of testing and for
presence of volatiles, surface porosity, or extractables will
standardization of iodine testing (see Section 8) when target
influence the iodine adsorption number.Aging of carbon black
values cannot be obtained.
can also influence the iodine number.
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
5. Apparatus
standard.
5.1 Vials, glass, optically clear type, with polyethylene
1.4 This standard does not purport to address all of the
3
stoppers, 45 cm .
safety concerns, if any, associated with its use. It is the
5.2 Gravity Convection Drying Oven, capable of maintain-
responsibility of the user of this standard to establish appro-
ing 125 6 5°C.
priate safety and health practices and determine the applica-
5.3 Buret, either of the following may be used:
bility of regulatory limitations prior to use.
3 3
5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm incre-
ment counter and zero reset control, or
2. Referenced Documents
3
2 5.3.2 Buret, glass 25-cm , Class A, side-arm filling, gradu-
2.1 ASTM Standards:
3
ated in 0.05 cm and with automatic zero.
D 1799 Practice for Carbon Black—Sampling Packaged
3
5.4 Repetitive Dispenser, 25-cm capacity, 60.1% repro-
Shipments
3
ducibility and calibrated to within 60.03-cm accuracy.
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
5.5 Balance, analytical, with 0.1-mg sensitivity.
ments
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/
D 4483 Practice for Evaluating Precision for Test Method
min).
Standards in the Rubber and Carbon Black Manufacturing
3
5.7 VolumetricFlask, 2000-cm with standard taper stopper.
Industries
5.8 Funnel, large diameter, with standard taper joint to fit
D 4821 Guide for Carbon Black—Validation of Test
3
the 2000-cm flask.
Method Precision and Bias
3
5.9 Glass Bottle, amber, 2000-cm , with standard taper
3. Summary of Test Method stopper.
3
5.10 Glass Jug, approximate capacity 20-dm .
3.1 A weighed sample of carbon black is treated with a
5.11 Stirrer, approximately 300 by 300 mm for mixing.
portion of standard iodine solution and the mixture shaken and
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 Aug. 1, 2008. Published September 2008. Originally
approved in 1957. Last previous edition approved in 2008 as D 1510 – 08. 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
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D1510–08a
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 thiosulfate dropwise until
6.1 Purity of
...
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:D1510–08 Designation:D1510–08a
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
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
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
5.5 Balance, analytical, with 0.1-mg sensitivity.
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/min).
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 Jan. 15,Aug. 1, 2008. Published FebruarySeptember 2008. Originally approved in 1957. Last previous edition approved in 20072008 as
D1510–07a.D 1510 – 08.
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 ----------------------
D1510–08a
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 titrating.
5.13 Desiccator.
5.14 Miscellaneous Class A Glassware , and equipment necessary to carry out the test as written.
5.15 Mechanical Shaker, with at least 1 in. stroke length and a minimum of 240 strokes/min.
5.16 Automatic Titrator.
5.17 Redox Electrode, combined platinum
...
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