ASTM D2087-97(2001)

Standard Test Method for Iron in Formaldehyde Solutions

SCOPE
1.1 This test method covers the determination of the total iron content of formaldehyde solutions.  
1.2 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.
1.3 For hazard information and guidance, see the supplier's Material Safety Data Sheet.

General Information

• Status: Historical
• Publication Date: 31-Dec-2000
• ICS: 71.080.80 - Aldehydes and ketones
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.35 - Solvents, Plasticizers, and Chemical Intermediates

Relations

• Replaces: ASTM D2087-97 - Standard Test Method for Iron in Formaldehyde Solutions
• Effective Date: 01-Jan-2001
• Replaced By: ASTM D2087-06 - Standard Test Method for Iron in Formaldehyde Solutions
• Effective Date: 01-Apr-2006
• Referred By: ASTM D2378-22 - Standard Specification for Formaldehyde 50 % Grade Uninhibited and 37 % Grade Inhibited and Uninhibited
• Effective Date: 01-Jan-2001

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2087–97 (Reapproved 2001)
Standard Test Method for
Iron in Formaldehyde Solutions
This standard is issued under the fixed designation D 2087; 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 where such specifications are available. Other grades may be
used, provided it is first ascertained that the reagent is of
1.1 This test method covers the determination of the total
sufficiently high purity to permit its use without lessening the
iron content of formaldehyde solutions.
accuracy of the determination.
1.2 This standard does not purport to address all of the
6.2 Purity of Water—Unless otherwise indicated, references
safety concerns, if any, associated with its use. It is the
to water shall be understood to mean reagent water as defined
responsibility of the user of this standard to establish appro-
by Type IV of Specification D 1193.
priate safety and health practices and determine the applica-
6.3 AmmoniumAcetate Solution (100 g/L)—Dissolve 100 g
bility of regulatory limitations prior to use.
of ammonium acetate (NH C H O ) in 100 mL of water. Add
4 2 3 2
1.3 For hazard information and guidance, see the supplier’s
200 mL of acetic acid (CH COOH), dilute to 1 L with water,
Material Safety Data Sheet. 3
and mix.
2. Referenced Documents 6.4 Ammonium Hydroxide (1 + 1)—Mix equal volumes of
concentrated ammonium hydroxide (NH OH, sp gr 0.90) and
2.1 ASTM Standards: 4
water.
D 1193 Specification for Reagent Water
6.5 Congo Red Paper.
3. Summary of Test Method
6.6 Hydrochloric Acid (1 + 1)—Mix equal volumes of con-
centrated hydrochloric acid (HCl, sp gr 1.19) and water.
3.1 The specimen is evaporated and ashed; the iron, reduced
6.7 Hydroxylamine Hydrochloride Solution (100 g/L)—
to the divalent state by the addition of hydroxylamine hydro-
Dissolve 10 g of hydroxylamine hydrochloride (NH OH·
chloride, is reacted with o-phenanthroline to develop a color 2
HCl) in water and dilute to 100 mL.
that is measured at 510 nm.
6.8 Iron,StandardSolution (1 mL = 0.05 mg Fe)—Dissolve
4. Significance and Use
0.3510 g of ferrous ammonium sulfate (FeSO ·
(NH ) SO ·6H O) in 50 mL of water and 20 mL of concen-
4.1 This test method provides a measurement of iron con-
4 2 4 2
trated sulfuric acid (H SO , sp gr 1.84). Dilute with water to 1
tent of formaldehyde solutions. The results of these measure-
2 4
L in a volumetric flask and mix.
ments can be used for specification acceptance.
6.9 o-Phenanthroline Solution (1 g/L)—Dissolve 0.1 g of
5. Apparatus
o-phenanthroline in 10 mL of iron-free ethyl alcohol and
dilute to 100 mL with water.
5.1 Spectrophotometer, capable of measuring light absorp-
tion at 510 nm.
7. Calibration
5.2 Absorption Cells, minimum light path, 10 mm.
7.1 Prepare a series of standards by adding the reagents
5.3 Evaporating Dishes, 90-mm diameter, high-silica glass.
described in 6.3 to 0.2, 0.5, 1.0, 2.0, 3.0, 4.0, and 5.0-mL of
6. Reagents and Materials
standard iron solution in 100-mL volumetric flasks, and dilut-
ing to volume.
6.1 Purity of Reagents—Reagent grade chemicals shall be
7.2 Make spectrophotometer comparisons in the absorption
used in all tests. Unless otherwise indicated, it is intended that
cells and prepare a calibration curve by plotting the absor-
all reagents shall conform to the specifications of the Commit-
bances of the standard iron solutions against the milligrams of
tee on Analytical Reagents of the American Chemical Society,
“Reagent Chemicals,American Chemical Society Specifications,”Am. Chemi-
This test method is under the jurisdiction of ASTM Committee D01 on Paint
cal Soc., Washington, DC. For suggestions on the testing of reagents not listed by
and Related Coatings, Materials, andApplications and is the direct responsibility of
the American Chemical Society, see “Analar Standards for Laboratory U.K.,
Subcommittee D01
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