Standard Specification for
Polypropylene Injection and Extrusion Materials1

This standard is issued under the fixed designation D 4101; 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.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope*

1.1 This specification covers polypropylene materials suitable for injection molding and extrusion. Polymers consist of
homopolymer, copolymers, and elastomer compounded with or
without the addition of impact modifiers (ethylene-propylene
rubber, polyisobutylene rubber, and butyl rubber), colorants,
stabilizers, lubricants, or reinforcements.

1.2 This specification allows for the use of those polypropylene materials that can be recycled, reconstituted, and
reground, provided that: (1) the requirements as stated in this
specification are met, and (2) the material has not been
modified in any way to alter its conformance to food contact
regulations or similar requirements. The proportions of recycled, reconstituted, and reground material used, as well as
the nature and the amount of any contaminant, cannot be
practically covered in this specification. It is the responsibility
of the supplier and the buyer of recycled, reconstituted, and
reground materials to ensure compliance. (See Guide D 5033.)\

1.3 The values stated in SI units are to be regarded as the
standard.
NOTE 1—The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specific
applications. These will be designated by using the suffixes given in
Section 1.

1.4 The following safety hazards caveat pertains only to the
test methods portion, Section 13, of this specification: 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

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