ASTM D4764-01(2006)

Standard Test Method for Determination by X-ray Fluorescence Spectroscopy of Titanium Dioxide Content in Paint

SIGNIFICANCE AND USE
Titanium dioxide pigments are components with high refractive index that significantly influence the opacity, color, durability, and other properties of coatings. This test method for determining titanium dioxide content is quicker and easier to use than Test Methods D 1394, a wet chemical analysis method for pigments. It is conveniently applicable to single samples and to large numbers of samples. Only a single relatively stable reagent used to prepare standards and paints under test need be stored. Drawdown specimens used as standards, once prepared, can be stored indefinitely and used repeatedly.
SCOPE
1.1 This test method covers the determination of titanium dioxide content in liquid paint. This test method is applicable to both water-reducible and solvent-reducible paints.
1.2 The values stated in SI units ae 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. Specific hazards statements are given in Section 7.

General Information

• Status: Historical
• Publication Date: 31-May-2006
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.21 - Chemical Analysis of Paints and Paint Materials

Relations

• Replaces: ASTM D4764-01 - Standard Test Method for Determination by X-ray Fluorescence Spectroscopy of Titanium Dioxide Content in Paint
• Effective Date: 01-Jun-2006
• Replaced By: ASTM D4764-01(2012) - Standard Test Method for Determination by X-ray Fluorescence Spectroscopy of Titanium Dioxide Content in Paint
• Effective Date: 01-Jun-2012
• Referred By: ASTM E3234-20 - Standard Practice for Forensic Paint Analysis Training Program
• Effective Date: 01-Jun-2006

Standards Content (Sample)

Designation: D4764 − 01 (Reapproved 2006)
Standard Test Method for
Determination by X-ray Fluorescence Spectroscopy of
1
Titanium Dioxide Content in Paint
This standard is issued under the fixed designation D4764; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
1.1 This test method covers the determination of titanium 3.1 Paint containing a known amount of titanium dioxide is
dioxide content in liquid paint. This test method is applicable used as the reference standard. A solution of tetraethylammo-
to both water-reducible and solvent-reducible paints. niumbromidein2-ethoxyethanolisaddedtothestandardpaint
and to each paint being analyzed. Drawdown films of the
1.2 The values stated in SI units are to be regarded as the
standard and test paint are made on thin plastic sheets. The
standard. The values given in parentheses are for information
intensities of key X-ray fluorescence peaks of titanium and
only.
bromine are measured. The titanium dioxide content is deter-
1.3 This standard does not purport to address all of the
mined by comparing the ratio of the intensities of titanium and
safety concerns, if any, associated with its use. It is the
brominepeaksinthetestpaintandthestandard.Differencesin
responsibility of the user of this standard to establish appro-
the nonvolatile content of the paints are taken into account in
priate safety and health practices and determine the applica-
the calculation of results.
bility of regulatory limitations prior to use. Specific hazards
4. Significance and Use
statements are given in Section 7.
4.1 Titanium dioxide pigments are components with high
2. Referenced Documents
refractive index that significantly influence the opacity, color,
2
2.1 ASTM Standards: durability, and other properties of coatings. This test method
D1193Specification for Reagent Water for determining titanium dioxide content is quicker and easier
D1394Test Methods for Chemical Analysis of White Tita- to use than Test Methods D1394, a wet chemical analysis
nium Pigments method for pigments. It is conveniently applicable to single
D2369Test Method for Volatile Content of Coatings samples and to large numbers of samples. Only a single
D3925Practice for Sampling Liquid Paints and Related relatively stable reagent used to prepare standards and paints
Pigmented Coatings under test need be stored. Drawdown specimens used as
standards, once prepared, can be stored indefinitely and used
D3980Practice for Interlaboratory Testing of Paint and
3
Related Materials (Withdrawn 1998) repeatedly.
E180Practice for Determining the Precision of ASTM
5. Apparatus
Methods for Analysis and Testing of Industrial and Spe-
3
5.1 X-ray Fluorescence Spectrometer, suitable for measure-
cialty Chemicals (Withdrawn 2009)
ment of the baseline corrected intensity of the Ka lines of
titanium and of bromine. For spectrometers equipped with a
1 tungsten or chromium target and a lithium fluoride (200)
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of analyzing crystal, these lines are observed at 2u angles of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
86.09° and 29.97°, respectively.
Current edition approved June 1, 2006. Published June 2006. Originally
approved in 1988. Last previous edition approved in 2001 as D4764–01. DOI:
NOTE 1—Follow the recommendations of the manufacturer of the
10.1520/D4764-01R06.
instrument used. Use operating conditions that ensure that the count rate
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
for bromine and titanium are within the linear response range of the
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
detector. Although the base operating conditions and count rate may be
Standards volume information, refer to the standard’s Document Summary page on
different for different instruments, these differences will not affect the
the ASTM website.
outcome of the analysis.
3
The last approved version of this historical standard is referenced on
www.astm.org. 5.2 Paint Shaker.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4764 − 01 (Reapproved 2006)
5.3 Film Applicator, to produce a 75-µm (3-mil) wet film “X-ray Recommendations of the International Roentgen Ray
6
thickness. Committee on X-ray Protection,” the manufacturer’s instruc-
4 tion manual, and other standard publications on the subject.
5.4 Plastic Sheet, with no interfering X-ray fluorescence
Inquiries should be made of state agencies as to existing
peaks and n
...