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ASTM D2232-14

(Test Method)

Test Method for Evaporation Residue of Naphthalene

Test Method for Evaporation Residue of Naphthalene

SIGNIFICANCE AND USE
5.1 Evaporation residue is an empirical measure of nonvolatile impurities in naphthalene. This test method is suitable for setting specifications and for use as an internal quality control tool.
SCOPE
1.1 This test method covers the determination of the evaporation residue of naphthalene.  
1.2 This test method has been found applicable to determining residue in the range of 0.3 and 1.5 wt %.  
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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. For specific hazard statements, see Section 7 and 8.1.

General Information

Status
Historical
Publication Date
30-Jun-2014
ICS
71.080.15 - Aromatic hydrocarbons
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.07 - Styrene, Ethylbenzene and C9 and C10 Aromatic Hydrocarbons
Current Stage
Ref Project

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ASTM D2232-14 - Test Method for Evaporation Residue of Naphthalene
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2232 − 14
Standard Test Method for
1
Evaporating Residue of Naphthalene
This standard is issued under the fixed designation D2232; 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* E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
1.1 This test method covers the determination of the evapo-
2.2 Other Document:
ration residue of naphthalene.
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
1.2 This test method has been found applicable to determin-
3
1910.1200
ing residue in the range of 0.3 and 1.5 wt %.
1.3 In determining the conformance of the test results using 3. Terminology
this method to applicable specifications, results shall be
3.1 See Terminology D4790 for the definition of terms used
rounded off in accordance with the rounding-off method of
in this test method.
Practice E29.
4. Summary of Test Method
1.4 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4.1 A weighed quantity of naphthalene is heated in a tared
standard.
dish for3hat 105°C in a forced-draft oven and the residue is
weighed.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5.1 Evaporationresidueisanempiricalmeasureofnonvola-
bility of regulatory limitations prior to use. For specific hazard
tile impurities in naphthalene. This test method is suitable for
statements, see Section 7 and 8.1.
setting specifications and for use as an internal quality control
tool.
2. Referenced Documents
2
2.1 ASTM Standards:
6. Apparatus
D3438 Practice for Sampling and Handling Naphthalene,
6.1 Evaporating Dishes, porcelain, shallow form or alumi-
Maleic Anhydride, and Phthalic Anhydride
num weighing dishes, low form, fluted, 60 mm diameter, 15
D4790 Terminology ofAromatic Hydrocarbons and Related
mm high, 42 mL capacity.
Chemicals
6.2 Drying Oven, forced-ventilation, conforming to Speci-
D6809 Guide for Quality Control and Quality Assurance
fication E145 Type II, Grade A or B.
Procedures for Aromatic Hydrocarbons and Related Ma-
terials
7. Hazards
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
7.1 Consult current OSHA regulations, supplier’s Safety
E145 Specification for Gravity-Convection and Forced- Data Sheets and local regulations for all materials used in this
Ventilation Ovens
test method.
1 8. Sampling and Handling
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
8.1 Refer to Practice D3438 for proper sampling and han-
Subcommittee D16.07 on Styrene, Ethylbenzene and C9 and C10 Aromatic
dling of this product analyzed by this test method. (Caution—
Hydrocarbons.
Current edition approved July 1, 2014. Published August 2014. Originally
Sampling should follow safe rules in order to adhere to all
approved in 1967. Last previous edition approved in 1990 as D2232 – 81 (1990)
safety precautions as outlined in the latest OSHAregulations.)
which was withdrawnApril 1995 and reinstated in July 2014. DOI: 10.1520/D2232-
14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2232 − 14
TABLE 1 Evaporation Residue (wt. %)
9. Procedure
Repeatability Reproducibility
9.1 Placetheevaporatingdishinthedryingovenandheatat A
Average
Material Limit Limit
¯
105 6 5°C for at least 30 min. Remove from the oven and cool
X r R
in a desiccator. Weigh the cooled dish to the nearest 0.001 g.
A 0.07 0.09 0.09
B 0.26 0.04 0.11
9.2 Transfer to the tared dish 9.5 to 10.5 g weighed to the
C 0.35 0.14 0.34
nearest0.001gofthethoroughlymixednaphthalenespecimen. D 1.48 0.27 1.36
A
(Caution—Specimens for this determination should be
The average of the laboratories’ calculated averages.
handled in the solid s
...

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