MIL-DTL-25576E
3.2.1 Water reaction. When tested as specified in Table I and 4.3.2.1, the propellant shall have
separated sharply from the water layer. The interface shall be equal to or better than rating 1b as
described in ASTM D 1094, Table 2. In addition, neither layer shall have changed in volume by more
than 1 milliliter.
3.3 Additives. The additives listed herein may be used singly or in combination, in amounts not
to exceed those specified. No substance of known dangerous toxicity under usual conditions of handling
and use shall be added except as specified herein. The type and amount of each additive used shall be
reported and shall be specified in the contract or order.
3.3.1 Antioxidants. The following active inhibitors may be added separately or in combination to
the propellant in total concentration not in excess of 8.4 pounds of inhibitor (not including weight of
solvent) per 1,000 barrels (6.3.1) of propellant (9.1g/100 US gal) in order to prevent the formation of gum.
(a) 2,6-ditertiary butyl 4-methyl phenol.
(b) N, N' disecondary butyl paraphenylenediamine.
(c) 2,4-dimethyl-6 tertiary-butyl phenol.
(d) 2,6-ditertiary butyl phenol.
3.3.2 Metal deactivator. A metal deactivator, N, N'-disalicylidene-1, 2-propanediamine, may be
added in an amount not to exceed 2 pounds of active ingredient per 1,000 barrels of propellant (2.2 g/100
US gal).
3.3.3 Dye. A dye, methyl derivative of azobenzene-4-azo-2-naphthol, shall be added in an
amount not to exceed ½ ounce (wt) per 1000 US gallons of RP-1 propellant. Dye shall not be added to
RP-2 propellant.
3.4 Limiting values. For purposes of determining conformance with these requirements, an
observed value or a calculated value shall be rounded off to the nearest unit in the last right-hand digit
used in expressing the specified limit. This rounding off shall be done in accordance with the rounding-off
method of ASTM E 29 (Using Significant Digits in Test Data to Determine Conformance with
Specifications).
3.5 Filter. A filter/separator (F/S) conforming to the requirements of API/IP Spec 1581 shall be
installed on the fill line upstream of the header used for filling the delivery containers.
3.6 Workmanship. At the time of Government acceptance, the finished propellant shall be
visually free from undissolved water, sediment or suspended matter and shall be clear and bright (no
haze or cloudiness). In case of a dispute, the propellant shall be clear and bright at 70°F.
4. VERIFICATION
4.1 Classification of inspections. The inspection and testing of the propellant requirements
specified herein are classified as quality conformance tests (4.2).
4.2 Quality conformance tests. Quality conformance tests shall consist of the following:
Individual test
4.2.1
Sampling test
4.2.2
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