United States Prevention, Pesticides EPA712-C-98-033
Environmental Protection and Toxic Substances March 1998
Agency (7101)
4»EPA Product Properties
Test Guidelines
OPPTS 830.7200
Melting Point/Melting
Range
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INTRODUCTION
This guideline is one of a series of test guidelines that have been
developed by the Office of Prevention, Pesticides and Toxic Substances,
United States Environmental Protection Agency for use in the testing of
pesticides and toxic substances, and the development of test data that must
be submitted to the Agency for review under Federal regulations.
The Office of Prevention, Pesticides and Toxic Substances (OPPTS)
has developed this guideline through a process of harmonization that
blended the testing guidance and requirements that existed in the Office
of Pollution Prevention and Toxics (OPPT) and appeared in Title 40,
Chapter I, Subchapter R of the Code of Federal Regulations (CFR), the
Office of Pesticide Programs (OPP) which appeared in publications of the
National Technical Information Service (NTIS) and the guidelines pub-
lished by the Organization for Economic Cooperation and Development
(OECD).
The purpose of harmonizing these guidelines into a single set of
OPPTS guidelines is to minimize variations among the testing procedures
that must be performed to meet the data requirements of the U. S. Environ-
mental Protection Agency under the Toxic Substances Control Act (15
U.S.C. 2601) and the Federal Insecticide, Fungicide and Rodenticide Act
(7U.S.C. I36,etseq.).
Final Guideline Release: This document is available from the U.S.
Government Printing Office, Washington, DC 20402 on The Federal Bul-
letin Board. By modem dial 202-512-1387, telnet and ftp:
fedbbs.access.gpo.gov (IP 162.140.64.19), internet: http://
fedbbs.access.gpo.gov, or call 202-512-0132 for disks or paper copies.
This guideline is available in ASCII and PDF (portable document format)
from the EPA's World Wide Web site (http://www.epa.gov/epahome/re-
search.htm) under the heading "Researchers and Scientists/Test Methods
and Guidelines/OPPTS Harmonized Test Guidelines."
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OPPTS 830.7200 Melting point/melting range.
(a) Scope—(1) Applicability. This guideline is intended to meet test-
ing requirements of both the Federal Insecticide, Fungicide, and
Rodenticide Act (FIFRA) (7 U.S.C. 136, et seq.) and the Toxic Substances
Control Act (TSCA) (15 U.S.C. 2601).
(2) Background. The source materials used in developing this har-
monized OPPTS test guideline are the OPPT guideline under 40 CFR Part
796 Melting Point/Melting Range, OPP guideline 63-5 Melting Point (Pes-
ticide Assessment Guidelines, Subdivision O: Product Chemistry, EPA Re-
port 540/9-82-018, October 1982) and OECD guideline 102 Melting
Point/Melting Range.
(b) Introduction. This test guideline references methodology to de-
velop data on the melting temperature or melting temperature range of
chemical substances and mixtures. The data may be used to assess the
potential for movement of materials in the environment, to determine the
physical state of the substance under environmental conditions and to
evaluate possible health and environmental effects.
(c) Test procedures. Examples of methods for determining the melt-
ing temperature or melting temperature range of chemical substances or
mixtures are listed in Table 1, "Standard Melting Temperature Techniques
Referenced in this Guideline" and in OECD Guideline No. 102 (OECD
1995), "Melting Point/Melting Range." The codes to standardized bodies
listed in table 1 are:
ANSI—American National Standards Institute; ASTM—American
Society for Testing and Materials; TAPPI—Technical Association for the
Pulp and Paper Industry; FTS—Federal Test Standards; BSI—British
Standards Institution; IP—Institute of Petroleum; CIPAC—Collaborative
International Pesticides Analytical Council; OECD—Organization for Eco-
nomic Cooperation and Development.
These standards are available for purchase as follows:
(1) ANSI and BSI standards are available from: Sales Department,
American National Standards Institute, 1430 Broadway, New York, NY
10018.
(2) ASTM standards are available from: American Society for Testing
and Materials, 1916 Race St., Philadelphia PA 19103.
(3) CIPAC standards are available from: Black Bear Press, King's
Hedges Road, Cambridge CB4 2PQ England, Telefax 44 12234 76877.
(4) FTS standards are identical to the corresponding ASTM standards
and should be obtained from the same source as ASTM standards.
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(5) IP standards are available from: Hayden and Son Ltd., Spectrum
House, Alderton Cres., London NW4 3XX U.K.
(6) OECD methods are available from: OECD Publications and Infor-
mation Center, suite 1205, 2750 Pennsylvania Ave., NW., Washington,
DC 20006.
(7) TAPPI standards are available from: TAPPI Press, Technical As-
sociation of the Pulp and Paper Industry, One Dunwoody Park, Atlanta
GA 30338.
Table 1.—Standard Melting Temperature Techniques Referenced in this Guideline
Technique
Thiele tube
Cooling curve
Fisher-Johns
Microscope hot stage
Kofler hot bench
Drop melting point
Pour point
Congealling point
Capillary/liquid bath
Capillary/metal block
Differential thermal analysis and
differential scanning calorimetry.
Freezina temoerature
Standardizing Body 1
ANSI/ASTM 23
E 324-79 [30]
D 151 9-685 (1974) [37]
D87-77 [23] [20]
D 789-78a [36]
D 1457-78 [36]
D 21 16-79 [36]
D 2133-78 [36]
02117-64(1978) [35]
D 3451-76 [27]
0127-63(1977) [23] [20]
097-66(1978) [23] [40]
0938-71 (1976) [23]
E324-69
E537-76
TAPPI
T630-OS-71
T634-OS-70
FST4
7916x1402.5
7916x1401.4
7916x201.9
6SI
4695
5090
4452
5088
4634
4695
IP
55
133
15
76
CIPAC
MT2
MT1
OECD
102
102
102
102
102
102
102
1 Names of standardizing bodies are given in text.
2 Joint standard unless otherwise specified.
3 In brackets by ASTM Test Standard number is the volume number in which the standard appeared in the 1979 or 1980 Annual 6ook of ASTM
Standards. Numbers in parentheses indicate the year of last reapproval.
4 Identical to ANSI/ASTM standard.
5 ASTM only.
(d) References. The following references should be consulted for ad-
ditional background material on this test guideline.
(1) ANSI. American National Standards Institute. Book of Standards
(latest edition).
(2) ASTM. American Society for Testing and Materials. Annual Book
of ASTM Standards (latest edition).
(3) BSI. British Standards Institution. Book of British Standards (lat-
est edition).
(4) CIPAC. Collaborative International Pesticides Analytical Council.
CIPAC Handbook, vol. I., Analysis of Technical and Formulated Pes-
ticides (1970).
(5) FTS. Federal Test Standards. Book of Standards (latest edition).
(6) IP. Institute of Petroleum. Book of Standards (latest edition).
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(7) Organization for Economic Cooperation and Development, Guide-
lines for The Testing of Chemicals, OECD 102, Melting Point/Melting
Range, OECD, Paris, France.
(8) TAPPI. Technical Association of the Pulp and Paper Industry.
Book of Standards (1971).
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