ASTM D3265-03

Standard Test Method for Carbon Black—Tint Strength

SCOPE
1.1 This test method covers the determination of the tint strength of carbon black relative to an industry tint reference black (ITRB).
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

General Information

• Status: Historical
• Publication Date: 09-Jul-2003
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.21 - Carbon Black Surface Area and Related Properties

Relations

• Replaces: ASTM D3265-02 - Standard Test Method for Carbon Black—Tint Strength
• Effective Date: 10-Jul-2003
• Replaced By: ASTM D3265-05 - Standard Test Method for Carbon Black—Tint Strength
• Effective Date: 01-Dec-2005
• Referred By: ASTM D7849-23 - Standard Classification for Nomenclature of Reference Materials of Committee D24
• Effective Date: 10-Jul-2003
• Referred By: ASTM D6915-23 - Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
• Effective Date: 10-Jul-2003
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 10-Jul-2003
• Referred By: ASTM D4821-20 - Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• Effective Date: 10-Jul-2003
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 10-Jul-2003
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 10-Jul-2003
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 10-Jul-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation:D3265–03
Standard Test Method for
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Carbon Black—Tint Strength
This standard is issued under the fixed designation D 3265; 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 4. Significance and Use
1.1 This test method covers the determination of the tint 4.1 For the broad range of commercial rubber grade carbon
strength of carbon black relative to an industry tint reference blacks,tintstrengthishighlydependentuponparticlesize.Tint
black (ITRB). strength can be used as an indication of particle size; however,
1.2 The values stated in SI units are to be regarded as the tint strength is also dependent on structure and aggregate size
standard. The values given in parentheses are for information distribution. Therefore, differences in tint strength within
only. grades of carbon black may reflect differences other than
1.3 This standard does not purport to address all of the particle size.
safety concerns, if any, associated with its use. It is the
NOTE 1—This test method was developed primarily for the character-
responsibility of the user of this standard to establish appro-
ization of N100, N200, and N300 series carbon blacks.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5. Apparatus
5.1 Analytical Balance, with a sensitivity of 60.1 mg.
2. Referenced Documents
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5.2 Automatic Muller.
2.1 ASTM Standards:
5.3 Photometric Instrument, capable of detecting differ-
D 1799 Practice for Carbon Black—Sampling Packaged
ences in the amount of light reflectance between shades of
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4,5
Shipments
gray. The instrument is to be operated following the manu-
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
facturer’s instructions for optimum performance.
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ments
5.4 Oven, Gravity-Convection Type, capable of temperature
D 4483 Practice for Determining Precision for Test Method
regulation within 61°C at 125°C (62°F at 257°F) and
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Standards in the Rubber and Carbon Black Industries
temperature uniformity within 65°C (69°F).
D 4821 Guide for Carbon Black—Validation of Test
5.5 Reflectance Standards, as required for each reflectance
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Method Precision and Bias
instrument for checking calibration.
5.6 Spatulas, 100 to 150 mm (4 to 6 in.), two, flexible,
3. Summary of Test Method
tapered.
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3.1 A carbon black sample is mixed with a white powder
5.7 Syringe, 5-cm , automatic refilling, reproducible to
(zinc oxide) and a liquid vehicle (soybean oil epoxide) to 3
60.02 cm .
produce a black or gray paste. This paste is then spread to
5.8 Wiping Tissue, absorbent and lint free.
produce a surface suitable for measuring the reflectance of the
5.9 PasteApplicationApparatus—Anyoneofthefollowing
mixture by means of a photo-electric reflectance meter. The
groups of equipment may be used:
reflectance of the tested sample is then compared to the
reflectance of the ITRB prepared in the same manner. The tint
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strength of the tested sample is expressed as units of the The sole source of supply of the Hoover Automatic Muller, Model M5 known
to the committee at this time is Hoover Color Corp., P.O. Box 218, State Highway
reflectance of the ITRB divided by the reflectance of the
693, Hiwassee, VA 24347. If you are aware of alternative suppliers, please provide
sample and multiplied by 100.
this information to ASTM International Headquarters. Your comments will receive
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careful consideration at a meeting of the responsible technical committee , which
you may attend.
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The following instruments have been found satisfactory for this test method:
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This test method is under the jurisdiction ofASTM Committee D24 on Carbon Erichsen Tint Tester 527, available from T. G. Bell, Inc., 1340 Home Ave.,
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black Akron, OH 44310, and Hunter MiniScan XE or XE Plus, available from Hunter
Surface Area and Related Properties. AssociatesLaboratory,Inc.,11491SunsetHillsRoad,Reston,Virginia22090-5280.
Current edition approved July 10, 2003. Published August 2003. Originally The Densicron reflectometer may be used per Test Method D 3265 – 00.
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approved in 1973. Last previous edition approved in 2002 as D 3265 – 02. The Densicron reflectometer, though no longer commercially available, may be
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Annual Book of ASTM Standards, Vol 09.01. used for the test. For instructions, see Test Method D 3265 – 01.
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NOTICE: This standard has either been superseded
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