ASTM D1510-12
(Test Method)Standard Test Method for Carbon Black—Iodine Adsorption Number
Standard Test Method for Carbon Black—Iodine Adsorption Number
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.
SCOPE
1.1 This test method covers the determination of the iodine adsorption number of carbon black.
1.1.1 Method A is the original test method for this determination and Method B is an alternate test method using automated sample processing and analysis.
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. One or more of these SRB HT Iodine Standards are recommended for daily monitoring (x-charts) to ensure that the results are within the control limits of the individual standard. Use all SRB HT Iodine Standards 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 − 12
StandardTest Method for
1
Carbon Black—Iodine Adsorption Number
This standard is issued under the fixed designation D1510; 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 Standards in the Rubber and Carbon Black Manufacturing
Industries
1.1 This test method covers the determination of the iodine
D4821 Guide for Carbon Black—Validation of Test Method
adsorption number of carbon black.
Precision and Bias
1.1.1 MethodAis the original test method for this determi-
nation and Method B is an alternate test method using
3. Summary of Test Methods
automated sample processing and analysis.
3.1 In Test Method A, a weighed sample of carbon black is
1.2 The iodine adsorption number of carbon black has been
treated with a portion of standard iodine solution and the
shown to decrease with sample aging. New SRB HT Iodine
mixture shaken and centrifuged. The excess iodine is then
Standards have been produced that exhibit stable iodine
titrated with standard sodium thiosulfate solution, and the
number upon aging. One or more of these SRB HT Iodine
adsorbed iodine is expressed as a fraction of the total mass of
Standards are recommended for daily monitoring (x-charts) to
black.
ensure that the results are within the control limits of the
3.2 In Test Method B, a weighed sample of carbon black is
individual standard. Use all SRB HT Iodine Standards for
treated with a portion of standard iodine solution using an
standardization of iodine testing (see Section 8) when target
automated sample processor where the mixture is stirred,
values cannot be obtained.
settled and aliquoted for automatic titration. The excess iodine
1.3 The values stated in SI units are to be regarded as
is titrated with standard sodium thiosulfate solution, and the
standard. No other units of measurement are included in this
adsorbed iodine is expressed as a fraction of the total mass of
standard.
black.
1.4 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 Theiodineadsorptionnumberisusefulincharacterizing
priate safety and health practices and determine the applica-
carbon blacks. It is related to the surface area of carbon blacks
bility of regulatory limitations prior to use.
and is generally in agreement with nitrogen surface area. The
presence of volatiles, surface porosity, or extractables will
2. Referenced Documents
influence the iodine adsorption number.Aging of carbon black
2
can also influence the iodine number.
2.1 ASTM Standards:
D1799 Practice for Carbon Black—Sampling Packaged
5. Apparatus
Shipments
D1900 Practice for Carbon Black—Sampling Bulk Ship- 5.1 Vials, glass, optically clear type, with polyethylene
3
stoppers, 45 cm .
ments
D4483 Practice for Evaluating Precision for Test Method
5.2 Gravity Convection Drying Oven, capable of maintain-
ing 125 6 5°C.
5.3 Buret, either of the following may be used:
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon 3 3
5.3.1 Digital Buret, 25-cm capacity, with 0.01-cm incre-
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black
ment counter and zero reset control, or
Surface Area and Related Properties.
3
Current edition approved June 1, 2012. Published August 2012. Originally 5.3.2 Buret, glass 25-cm , Class A, side-arm filling, gradu-
3
approved in 1957. Last previous edition approved in 2011 as D1510 – 11a. DOI:
ated in 0.05 cm and with automatic zero.
10.1520/D1510-12.
3
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5.4 Repetitive Dispenser, 25-cm capacity, 60.1% repro-
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ducibility and calibrated to within 60.03-cm accuracy.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.5 Balance, analytical, with 0.1-mg sensitivity.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1510 − 12
5.6 Centrifuge, with minimum speed of 105 rad/s (1000 r/ 6.9 Deionized Water.
min).
3
7. Standardization of Solutions
5.7 VolumetricFlask, 2000-cm with standard taper stopper.
7.1 Sodium Thiosulfate, 0.0394 N (60.00008):
5.8 Funnel, large diameter, with standard taper joint to fit
3
7.1.1 Use potassium dichromate solution as follows:
...
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 − 11a D1510 − 12
Standard Test Method for
1
Carbon Black—Iodine Adsorption Number
This standard is issued under the fixed designation D1510; 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.
1.1.1 Method A is the original test method for this determination and Method B is an alternate test method using automated
sample processing and analysis.
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. One or more of these SRB HT Iodine Standards are
recommended for daily monitoring (x-charts) to ensure that the results are within the control limits of the individual standard. Use
all SRB HT Iodine Standards 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D4821 Guide for Carbon Black—Validation of Test Method Precision and Bias
3. Summary of Test Methods
3.1 In Test Method A, 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.
3.2 In Test Method B, a weighed sample of carbon black is treated with a portion of standard iodine solution using an automated
sample processor where the mixture is stirred, settled and aliquoted for automatic titration. The excess iodine is 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.
1
This test method is under the jurisdiction of ASTM 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 May 1, 2011June 1, 2012. Published June 2011August 2012. Originally approved in 1957. Last previous edition approved in 2011 as
D1510 – 11.D1510 – 11a. DOI: 10.1520/D1510-11A.10.1520/D1510-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
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 − 12
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
...
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