Hexanitrostilbene

Hexanitrostilbene
IUPAC name 1,3,5-Trinitro-2-[2-(2,4,6-trinitrophenyl)ethenyl]benzene
Other names 1,1'-(1,2-ethenediyl)bis[2,4,6-trinitrobenzene]; 1,2-bis-(2,4,6-trinitrophenyl)-ethylene; hexanitrodiphenylethylene
Identifiers
CAS number	20062-22-0 Y
PubChem	253628
ChemSpider	10760172 Y
UN number	0392 TNT mixtures: 0388, 0389
Jmol-3D images	Image 1
SMILES O=[N+]([O-])c1c(ccc(c1[N+]([O-])=O)[N+]([O-])=O)/C=C/c2ccc([N+]([O-])=O)c([N+]([O-])=O)c2[N+]([O-])=O
InChI InChI=1S/C14H6N6O12/c21-15(22)9-5-3-7(11(17(25)26)13(9)19(29)30)1-2-8-4-6-10(16(23)24)14(20(31)32)12(8)18(27)28/h1-6H/b2-1+ Y Key: LQXXGLZCVKSCEV-OWOJBTEDSA-N Y InChI=1/C14H6N6O12/c21-15(22)9-5-3-7(11(17(25)26)13(9)19(29)30)1-2-8-4-6-10(16(23)24)14(20(31)32)12(8)18(27)28/h1-6H/b2-1+ Key: LQXXGLZCVKSCEV-OWOJBTEDBF
Properties
Molecular formula	C14H6N6O12
Molar mass	450.23 g/mol
Appearance	Yellow crystalline powder
Density	1.7 g/cm3
Melting point	316 °C, 589 K, 601 °F
Explosive data
Shock sensitivity	Low
Friction sensitivity	Low
Explosive velocity	7000 m/s
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Hexanitrostilbene (HNS), also called JD-X, is a heat resistant high explosive developed at the Naval Ordnance Laboratory in the 1960s. Other names include 1,1'-(1,2-ethenediyl)bis[2,4,6-trinitrobenzene]; 1,2-bis-(2,4,6-trinitrophenyl)-ethylene; hexanitrodiphenylethylene.

It is commercially produced by oxidizing trinitrotoluene (TNT) with a solution of sodium hypochlorite. HNS boasts a higher insensitivity to heat than TNT, and like TNT it is very insensitive to impact. When casting TNT, HNS is added at 0.5% to form erratic micro-crystals within the TNT which prevent cracking.

HNS was the main explosive fill in the thumper mortar round canisters used as part of the Apollo Lunar Active Seismic Experiments.

Its heat of detonation is 4 kJ/g.