Document ID: chunk:federal_register_of_legislation:F2017L00081:reg:25:p4
Version: federal_register_of_legislation:F2017L00081
Segment Type: reg
Provision Reference: reg 25 (pt 4/15)
Character Range: 167134–170248

liquid polymer based dispersion of refractory or insulating materials, for example, carbon filled HTPB or other polymer with added curing agents to be sprayed or screeded over a case interior (see Category V(c)).
Note 3: In subitem 3(c), "insulation" intended to be applied to the components of a rocket motor, that is, the case, nozzle inlets, case closures, includes cured or semi‑cured compounded rubber sheet stock containing an insulating or refractory material. It may also be incorporated as stress relief boots or flaps.
Note 4: The only servo valves and pumps covered in (e) above, are the following:
(a) Servo valves designed for flow rates of 24 liters per minute or greater, at an absolute pressure of 7,000 kPa (1,000 psi) or greater, that have an actuator response time of less than 100 msec;
(b) Pumps, for liquid propellants, with shaft speeds equal to or greater than 8,000 RPM or with discharge pressures equal to or greater than 7,000 kPa (1,000 psi).
Note 5: Subitem 3(e) systems and components may be exports as part of a satellite.

Item 4—Category II
  Propellants and constituent chemicals for propellants as follows:
 (a) propulsive substances:
 (1) hydrazine with a concentration of more than 70 percent and its derivatives including monomethylhydrazine (MMH);
 (2) unsymmetric dimethylhydrazine (UDHM);
 (3) ammonium perchlorate;
 (4) spherical aluminum powder with particle of uniform diameter of less than 500 × 10‑6M (500 microns) and an aluminum content of 97 percent or greater;
 (5) metal fuels in particle sizes less than 500 × 10‑6M (500 microns), whether spherical, atomized, spheriodal, flaked or ground, consisting of 97 percent or more of any of the following: zirconium, beryllium, boron, magnesium, zinc, and alloys of these;
 (6) nitroamines (cyclotetramethylenetetranitramene (HMX), cyclotrimethylenetrinitramine (RDX);
 (7) percholrates, chlorates or chromates mixed with powdered metals or other high energy fuel components;
 (8) carboranes, decaboranes, pentaboranes and derivatives thereof;
 (9) liquid oxidizers, as follows:
 (A) nitrogen dioxide/dinitrogen tetroxide;
 (B) inhibited Red Fuming Nitric Acid (IRFNA);
 (C) compounds composed of fluorine and one or more of other halogens, oxygen or nitrogen.
 (b) polymeric substances:
 (1) hydroxyterminated polybutadiene (HTPB);
 (2) glycidylazide polymer (GAP).
 (c) other high energy density propellants such a Boron Slurry having an energy density of 40 × 10 joules/kg or greater.
 (d) other propellants additives and agents:
 (1) bonding agents as follows:
 (i) tris (1(2methyl)aziridinyl phosphine oxide (MAPO);
 (ii) trimesol 1(2)ethyl)aziridine (HX868, BITA);
 (iii) "tepanol" (HX878), reaction product of tetraethylenepentamine, acrylonitrile and glycidol;
 (iv) "tepan" (HX879), reaction product of tet enepentamine and acrylonitrile;
 (v) polyfunctional aziridene amides with isophthalic, trimesic, isocyanuric, or trimethyladipic backbone also having a 2methyl or 2ethyl aziridine group (HX752, HX872 and HX877);
 (2) curing agents and catalysts as follows:
 (i) triphenyl bismuth (TPB);
 (3) burning rate