4.C.2.Fuel substances as follows:

a. Hydrazine (CAS 302-01-2) with a concentration of more than 70%;
b. Hydrazine derivatives as follows:
1. Monomethylhydrazine (MMH) (CAS 60-34-4);
2. Unsymmetrical dimethylhydrazine (UDMH) (CAS 57-14-7);
3. Hydrazine mononitrate (CAS 13464-97-6);
4. Trimethylhydrazine (CAS 1741-01-1);
5. Tetramethylhydrazine (CAS 6415-12-9);
6. N,N diallylhydrazine (CAS 5164-11-4);
7. Allylhydrazine (CAS 7422-78-8);
8. Ethylene dihydrazine (CAS 6068-98-0);
9. Monomethylhydrazine dinitrate;
10. Unsymmetrical dimethylhydrazine nitrate;
11. Hydrazinium azide (CAS 14546-44-2);
12. 1,1-Dimethylhydrazinium azide (CAS 227955-52-4) /
1,2-Dimethylhydrazinium azide (CAS 299177-50-7);
13. Hydrazinium dinitrate (CAS 13464-98-7);
14. Diimido oxalic acid dihydrazine (CAS 3457-37-2);
15. 2-hydroxyethylhydrazine nitrate (HEHN);
16. Hydrazinium perchlorate (CAS 27978-54-7);
17. Hydrazinium diperchlorate (CAS 13812-39-0);
18. Methylhydrazine nitrate (MHN) (CAS 29674-96-2);
19. 1,1-Diethylhydrazine nitrate (DEHN) /
1,2-Diethylhydrazine nitrate (DEHN) (CAS 363453-17-2);
20. 3,6-dihydrazino tetrazine nitrate (DHTN);
Technical Note:
3,6-dihydrazino tetrazine nitrate is also referred to as
1,4-dihydrazine nitrate.
c. Spherical or spheroidal aluminium powder (CAS 7429-90-5) in particle size of less than 200 x 10⁻⁶ m (200 µm) and an aluminium content of 97% by weight or more, if at least 10% of the total weight is made up of particles of less than 63 µm, according to ISO 2591-1:1988 or national equivalents;
Technical Note:
A particle size of 63 µm (ISO R-565) corresponds to 250 mesh (Tyler) or 230 mesh (ASTM standard E-11).
d. Metal powders of any of the following: zirconium (CAS 7440-67-7), beryllium (CAS 7440-41-7), magnesium (CAS 7439-95-4) or alloys of these, if at least 90% of the total particles by particle volume or weight are made up of particles of less than 60 µm (determined by measurement techniques such as using a sieve, laser diffraction or optical scanning), whether spherical, atomised, spheroidal, flaked or ground, consisting of 97% by weight or more of any of the above mentioned metals;
Note:
In a multimodal particle distribution (e.g. mixtures of different grain sizes) in which one or more modes are controlled, the entire powder mixture is controlled.
Technical Note:
The natural content of hafnium (CAS 7440-58-6) in the zirconium (typically 2% to 7%) is counted with the zirconium.
e. Metal powders of either boron (CAS 7440-42-8) or boron alloys with a boron content of 85% or more by weight, if at least 90% of the total particles by particle volume or weight are made up of particles of less than 60 µm (determined by measurement techniques such as using a sieve, laser diffraction or optical scanning), whether spherical, atomised, spheroidal, flaked or ground;
Note:
In a multimodal particle distribution (e.g. mixtures of different grain sizes) in which one or more modes are controlled, the entire powder mixture is controlled.
f. High energy density materials, usable in the systems specified in 1.A. or 19.A., as follows:
1. Mixed fuels that incorporate both solid and liquid fuels, such as boron slurry, having a mass- based energy density of 40 x 10⁶ J/kg or greater;
2. Other high energy density fuels and fuel additives (e.g., cubane, ionic solutions, JP-10) having a volume-based energy density of 37.5 x 10⁹ J/m³ or greater, measured at 20oC and one atmosphere (101.325 kPa) pressure.
Note:
Item 4.C.2.f.2. does not control fossil refined fuels and biofuels produced from vegetables, including fuels for engines certified for use in civil aviation, unless specifically formulated for systems specified in 1.A. or 19.A.
g. Hydrazine replacement fuels as follows:
1. 2-Dimethylaminoethylazide (DMAZ) (CAS 86147-04-8).