Pipeline and Haz. Matls. Safety Admin., DOT
containing sulfur is not subject to the
placarding requirements of subpart F of
this part, if it is marked with the appropriate identification number as required by
subpart D of this part. Molten sulfur must
be marked as required by Section 172.325 of this
subchapter.
31 Materials which have undergone sufficient heat treatment to render them nonhazardous are not subject to the requirements of this subchapter.
32 Polymeric beads and molding compounds
may
be
made
from
polystyrene,
poly(methyl methacrylate) or other polymeric material.
33 Ammonium nitrites and mixtures of an
inorganic nitrite with an ammonium salt
are prohibited.
34 The commercial grade of calcium nitrate
fertilizer, when consisting mainly of a double salt (calcium nitrate and ammonium
nitrate) containing not more than 10 percent ammonium nitrate and at least 12 percent water of crystallization, is not subject
to the requirements of this subchapter.
35 Antimony sulphides and oxides which do
not contain more than 0.5 percent of arsenic calculated on the total mass do not
meet the definition of Division 6.1.
37 Unless it can be demonstrated by testing
that the sensitivity of the substance in its
frozen state is no greater than in its liquid
state, the substance must remain liquid
during normal transport conditions. It
must not freeze at temperatures above Section15
SectionC (5 SectionF).
38 If this material shows a violent effect in
laboratory tests involving heating under
confinement, the labeling requirements of
Special Provision 53 apply, and the material must be packaged in accordance with
packing method OP6 in Section 173.225 of this subchapter. If the SADT of the technically
pure substance is higher than 75 SectionC, the
technically pure substance and formulations derived from it are not self-reactive
materials and, if not meeting any other
hazard class, are not subject to the requirements of this subchapter.
39 This substance may be carried under provisions other than those of Class 1 only if
it is so packed that the percentage of
water will not fall below that stated at any
time during transport. When phlegmatized
with water and inorganic inert material,
the content of urea nitrate must not exceed 75 percent by mass and the mixture
should not be capable of being detonated
by test 1(a)(i) or test 1(a)(ii) in the UN
Manual of Tests and Criteria (IBR, see
Section 171.7 of this subchapter).
40 Polyester resin kits consist of two components: A base material (either Class 3 or
Division 4.1, Packing Group II or III) and
an activator (organic peroxide), each separately packed in an inner packaging. The
organic peroxide must be type D, E, or F,

Section 172.102

not requiring temperature control. The
components may be placed in the same
outer packaging provided they will not
interact dangerously in the event of leakage. The Packing Group assigned will be II
or III, according to the classification criteria for either Class 3 or Division 4.1, as
appropriate, applied to the base material.
Additionally, unless otherwise excepted in
this subchapter, polyester resin kits must
be packaged in specification combination
packagings based on the performance level
of the base material contained within the
kit.
41 This material at the Packing Group II
hazard criteria level may be transported in
Large Packagings.
43 The membrane filters, including paper
separators and coating or backing materials, that are present in transport, must
not be able to propagate a detonation as
tested by one of the tests described in the
UN Manual of Tests and Criteria, Part I,
Test series 1(a) (IBR, see Section 171.7 of this subchapter). On the basis of the results of
suitable burning rate tests, and taking
into account the standard tests in the UN
Manual of Tests and Criteria, Part III, subsection 33.2.1 (IBR, see Section 171.7 of this subchapter), nitrocellulose membrane filters
in the form in which they are to be transported that do not meet the criteria for a
Division 4.1 material are not subject to the
requirements of this subchapter. Packagings must be so constructed that explosion is not possible by reason of increased
internal pressure. Nitrocellulose membrane filters covered by this entry, each
with a mass not exceeding 0.5 g, are not
subject to the requirements of this subchapter when contained individually in an
article or a sealed packet.
44 The formulation must be prepared so
that it remains homogenous and does not
separate during transport. Formulations
with low nitrocellulose contents and neither showing dangerous properties when
tested for their ability to detonate,
deflagrate or explode when heated under
defined confinement by the appropriate
test methods and criteria in the UN Manual of Tests and Criteria (IBR, see Section 171.7 of
this subchapter), nor classed as a Division
4.1 (flammable solid) when tested in accordance with the procedures specified in
Section 173.124 of this subchapter (chips, if necessary, crushed and sieved to a particle
size of less than 1.25 mm), are not subject
to the requirements of this subchapter.
45 Temperature should be maintained between 18 SectionC (64.4 SectionF) and 40 SectionC (104 SectionF).
Tanks containing solidified methacrylic
acid must not be reheated during transport.
46 This material must be packed in accordance with packing method OP6 (see Section 173.225
of this subchapter). During transport, it

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