ASTM D2351-90(2005)

Standard Test Method for Sulfide in White Pigment Separated from Solvent-Reducible Paints

SIGNIFICANCE AND USE
Sulfide containing pigments such as lithopone have been used in paints in varying degrees in the past years. As such it is useful to formulators and users to be able to monitor the amount of this compound in whole paints.
SCOPE
1.1 This test method covers the determination of sulfide sulfur in white pigment separated from solvent-reducible paints.
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: 31-Dec-2004
• 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 D2351-90(1999) - Standard Test Method for Sulfide in White Pigment Separated from Solvent-Reducible Paints
• Effective Date: 01-Jan-2005
• Replaced By: ASTM D2351-90(2010) - Standard Test Method for Sulfide in White Pigment Separated from Solvent-Reducible Paints
• Effective Date: 01-Jun-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2351 – 90 (Reapproved 2005)
Standard Test Method for
Sulfide in White Pigment Separated from Solvent-Reducible
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Paints
This standard is issued under the fixed designation D2351; 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.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of sulfide 4.1 Sulfidecontainingpigmentssuchaslithoponehavebeen
sulfur in white pigment separated from solvent-reducible used in paints in varying degrees in the past years. As such it
paints. is useful to formulators and users to be able to monitor the
1.2 The values stated in SI units are to be regarded as amount of this compound in whole paints.
standard. No other units of measurement are included in this
5. Reagents
standard.
1.3 This standard does not purport to address all of the 5.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- all reagents shall conform to the specifications of the Commit-
tee onAnalytical Reagents of theAmerican Chemical Society,
priate safety and health practices and determine the applica-
4
bility of regulatory limitations prior to use. where such specifications are available. Other grades may be
used, provided it is first ascertained that the reagent is of
2. Referenced Documents
sufficiently high purity to permit its use without lessening the
2
2.1 ASTM Standards: accuracy of the determination.
D215 Practice for the Chemical Analysis of White Linseed 5.2 Purity of Water—Unless otherwise indicated, references
3
Oil Paints to water shall be understood to mean reagent grade water
D1193 Specification for Reagent Water conforming to Type II of Specification D1193.
D2371 Test Method for Pigment Content of Solvent- 5.3 Ammoniacal Cadmium Chloride or Zinc Sulfate
Reducible Paints Solution—Dissolve8gof cadmium chloride (CdCl ·2H O) in
2 2
200 mL of water and add 200 mL of ammonium hydroxide
3. Summary of Test Method
(NH OH, sp gr 0.90); or, dissolve 200 g of zinc sulfate
4
3.1 The extracted pigment is placed in a flask with mossy
(ZnSO ·7H O) in 1080 mL of water and 920 mL of NH OH
4 2 4
zinc. The hydrogen sulfide generated by addition of HCl reacts (sp gr 0.90).
with lead nitrate in an absorption flask forming lead sulfide.
5.4 Hydrochloric Acid (sp gr 1.19)—Concentrated HCl.
The lead sulfide is dissolved with nitric acid (HNO ) and the 5.5 Lead Nitrate, Alkaline Solution— Into 100 mL of
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lead determined as lead sulfate in accordance with Test
potassium hydroxide (KOH) solution (56 g in 140 mL of
Methods D215. water)pourasaturatedsolutionofleadnitrate(Pb(NO ) )(250
3 2
3.2 A rapid method is also described.
g in 500 mLof water) until the precipitate ceases to redissolve,
stirring constantly while mixing. Let settle, filter through a
glass filter, and dilute the clear filtrate with an equal volume of
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
water. About 3 volumes of the Pb(NO ) solution will be
3 2
and Related Coatings, Materials, andApplications and is the direct responsibility of
required for 1 volume of the KOH solution.
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved Jan. 1, 2005. Published February 2005. Originally 5.6 Mossy Zinc.
approved in 1965. Last previous edition approved in 1999 as D2351 – 90 (1999).
DOI: 10.1520/D2351-90R05.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Reagent Chemicals, American Chemical Society Specifications, American
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Standards volume information, refer to the standard’s Document Summary page on listed by the American Chemical Society, see Analar Standards for Laboratory
the ASTM website. Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
3
Withdrawn. The last approved version of this historical standard is referenced and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
on www.astm.org. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2351 – 90 (2005)
5.7 Nitric Acid (1+4)—Mix 1 volume of concentrated 6. Preparation of Sample
HNO , (sp gr 1.42) with 4 volumes of water.
6.1 Separate and prepare the pigment f
...