ASTM D284-88(1999)

Standard Test Methods for Chemical Analysis of Mercuric Oxide Pigment (Withdrawn 2003)

SCOPE
1.1 These test methods cover procedures for the chemical analysis of mercuric oxide pigment.  
1.2 This standard does not purport to address all of the safety problems, 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.> A specific hazard statement is given in the Note of 11.1.

General Information

• Status: Withdrawn
• Publication Date: 09-May-1999
• Withdrawal Date: 09-Oct-2003
• ICS: 87.060.10 - Pigments and extenders
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.31 - Pigment Specifications

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 284 – 88 (Reapproved 1999)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Methods for
Chemical Analysis of Mercuric Oxide Pigment
This standard is issued under the fixed designation D 284; 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 5. Preparation of Sample
1.1 These test methods cover procedures for the chemical 5.1 If the sample is large, mix it thoroughly before taking a
analysis of mercuric oxide pigment. representative portion. Grind the representative portion to a
1.2 This standard does not purport to address all of the fine powder and thoroughly mix before taking portions for
safety concerns, if any, associated with its use. It is the analysis. Keep the sample in a stoppered glass bottle.
responsibility of the user of this standard to establish appro-
6. Precision
priate safety and health practices and determine the applica-
6.1 Repeatability and reproducibility are believed to be well
bility of regulatory limitations prior to use. A specific hazard
statement is given in the Note 1 of 11.1. within the limits usually obtained on similar chemical test
methods, but no actual figures on precision are available.
2. Referenced Documents
ALKALINITY OR ACIDITY
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
7. Procedure
D 1208 Test Methods for Common Properties of Certain
7.1 Determine alkalinity or acidity in accordance with Test
Pigments
Methods D 1208.
3. Significance and Use
FREE MERCURY
3.1 These test methods are intended as a quick and reliable
procedure for measuring purity of mercuric oxide pigment to
8. Procedure
determine if it meets purity standards as agreed upon between
8.1 Examine a representative specimen of the dry mercuric
the producer and the consumer.
oxide under a microscope for the presence of free mercury.
4. Purity of Reagents and Materials
TOTAL MERCURY
4.1 Reagent grade chemicals shall be used in all tests.
9. Reagents and Materials
Unless otherwise indicated, it is intended that all reagents shall
conform to the specifications of the Committee on Analytical 9.1 Ammonium Thiocyanate, Standard Solution (1
Reagents of the American Chemical Society, where such
mL 5 0.012 g Hg)—Dissolve 9 g of ammonium thiocyanate
specifications are available. Other grades may be used, pro- (NH CNS) in water and dilute to 1 L. Standardize the solution
vided it is first ascertained that the reagent is of sufficiently
against mercury, as follows: Weigh to 0.1 mg about 4.6 g of
high purity to permit its use without lessening the accuracy of
mercury, and dissolve it in 40 mL of warm HNO (1+1). Dilute
the determination. to 200 mL with water and add KMnO solution (50 g/L)
4.2 Unless otherwise indicated, references to water shall be
dropwise until the pink color persists for 5 min in order to
understood to mean reagent water conforming to Type II of ensure the absence of nitrous acid (HNO ) and monovalent
Specification D 1193.
mercury. Add FeSO solution (50 g/L) dropwise to destroy
excess permanganate. Add 4 mL of ferric ammonium sulfate
indicator solution, and titrate with the NH CNS solution.
These test methods are under the jurisdiction of ASTM Committee D-1 on Paint
9.2 Calculate the mercury equivalent M of the NH CNS
and Related Coatings, Materials, and Applications and are the direct responsibilit
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