ASTM D3265-06

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.
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: 30-Sep-2006
• 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 D3265-05 - Standard Test Method for Carbon Black—Tint Strength
• Effective Date: 01-Oct-2006
• Replaced By: ASTM D3265-07 - Standard Test Method for Carbon Black-Tint Strength
• Effective Date: 01-Jul-2007
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-Oct-2006
• Referred By: ASTM D7849-23 - Standard Classification for Nomenclature of Reference Materials of Committee D24
• Effective Date: 01-Oct-2006
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 01-Oct-2006
• Referred By: ASTM D4821-20 - Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• Effective Date: 01-Oct-2006
• Referred By: ASTM D6915-23 - Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
• Effective Date: 01-Oct-2006
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 01-Oct-2006
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 01-Oct-2006

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D3265–06
Standard Test Method for
1
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-
4.2 Tint strength specifications within the carbon black
bility of regulatory limitations prior to use.
industryhavebeendevelopedusingaHooverMullerapparatus
whichisusedtopreparecarbonblack-zincoxidepastes.Anew
2. Referenced Documents
3
2 mixing apparatus, SpeedMixer (DAC 150 FVZ), and a corre-
2.1 ASTM Standards:
sponding procedure have been extensively studied within D24
D 1799 Practice for Carbon Black—Sampling Packaged
and shown to provide equivalent tint strength for all carcass or
Shipments
soft blacks and most tread blacks with the exception of higher
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
surface area N100 types and specialty blacks. Therefore, it is
ments
the responsibility of the user of this alternate apparatus to
D 4483 Practice for Evaluating Precision for Test Method
ensuretheirproductswilladequatelydisperse.Disputesarising
Standards in the Rubber and Carbon Black Manufacturing
between a user and producer should be resolved using the
Industries
Hoover Muller apparatus until ASTM develops adequate
D 4821 Guide for Carbon Black—Validation of Test
precision statements.
Method Precision and Bias
5. Apparatus
3. Summary of Test Method
5.1 Analytical Balance, with a sensitivity of 60.1 mg.
3.1 A carbon black sample is mixed with a white powder
4,5
5.2 Automatic Muller.
(zinc oxide) and a liquid vehicle (soybean oil epoxide) to
5.3 Photometric Instrument, capable of detecting differ-
produce a black or gray paste. This paste is then spread to
ences in the amount of light reflectance between shades of
produce a surface suitable for measuring the reflectance of the
,
5 6
gray. The instrument is to be operated following the manu-
mixture by means of a photo-electric reflectance meter. The
facturer’s instructions for optimum performance.
reflectance of the tested sample is then compared to the
reflectance of the ITRB prepared in the same manner. The tint
strength of the tested sample is expressed as units of the
3
SpeedMixer is a registered trademark of FlackTek Inc., 1708 Highway 11,
reflectance of the ITRB divided by the reflectance of the
Bldg. G, Landrum, SC 29356. http://www.speedmixer.com
4
sample and multiplied by 100.
The sole source of supply of the HooverAutomatic Muller, Model M5, known
to the committee at this time is Hoover Color Corp., P.O. Box 218, State Highway
693, Hiwassee, VA 24347.
1 5
This test method is under the jurisdiction ofASTM Committee D24 on Carbon If you are aware of alternative suppliers, please provide this information to
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black ASTM International Headquarters. Your comments will receive careful consider-
1
Surface Area and Related Properties. ation at a meeting of the responsible technical committee, which you may attend.
6
Current edition approved Oct. 1, 2006. Published October 2006. Originally The following instruments have been found satisfactory for this test method:
approved in 1973. Last previous edition approved in 2005 as D 3265 – 05. Erichsen Tint Tester 527, available from T. G. Bell, Inc., 1340 Home Ave., Akron,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or OH 44310, and Hunter MiniScan XE or XE Plus, available from HunterAssociates
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Laboratory, Inc., 11491 Sunset Hills Road, Re
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