Table 7. Visualization of nitroaromatics, nitramines, and nitrate esters.
Visualizing agent
Visualized compounds*
TNT- purple
TNB- orange
Ensys TNT developer
Tetryl- orange
DNT- light green after acetone
TNT- orange yellow
TNB- orange yellow
TiCl and DMAB
3
Tetryl- light brown
2-A-DNT- light orange yellow
4-A-DNT- golden yellow
DNT- light orange yellow
TNT- bright yellow
TNB- orange-yellow
TiCl3 and DEAB
Tetryl- light yellow
2-A-DNT- yellow
4-A-DNT- yellow
DNT- yellow
TNT- pinkish purple
TNB- purple
TiCl3 and DMACA
Tetryl- purple
2-A-DNT- purple
4-A-DNT- purple
DNT- light purple
TNT- purple
TNB- purplish pink
TiCl , NaNO , and Bratton-Marshall
3
2
Tetryl- light pink
2-A-DNT- purple
4-A-DNT- purple
DNT- purple
TNT- purple
2-A-DNT- faint yellow
EDA : DMSO (1:1)
Tetryl- orange
DNT- faint light green when the plate is wet
TNB- red-orange
TNT- peachy orange
TNB- light pink
5% KOH and Hach NitriVer3
Tetryl- light yellow
2-A-DNT- light yellow
TNT- light purple
TNB- light purple
5% KOH and modified Griess reagent
Tetryl- light purple
TNT- faint light purple
TNB- faint light purple
5% KOH and Bratton-Marshall reagent
Tetryl- faint light purple
Tetryl- very faint yellow
NG- pink
0.1 NaOH and Peak's Griess reagent
2-A-DNT- faint yellow
RDX- light reddish brown
2-A-DNT-very light yellow
1 NaOH and Higg's Griess reagent
TNT- reddish brown
NG- purplish pink
Tetryl- light yellow
TNT- peach
2-A-DNT- light yellow
5% KOH and Higg's Griess reagent
Tetryl- yellow
NG- pink
TNB- faint pink
TNT- peachy-brown
TNB- light pink
5% KOH and Hach NitriVer3
Tetryl- light yellow
2-A-DNT- light yellow
TNT- yellow
2-A-DNT- light yellow
NaIO4/KMnO4 spray
Tetryl- light yellow
DNT- light yellow
TNB- light yellow
TNT- light brown
TNB- light orange
5% EDA in ethanol
Tetryl- peachy brown
2-A-DNT- light, light yellow
PETN- lime green
RDX- light blue
Griess reagent and UV exposure for 30
NG- lime green
HMX- light blue
min. followed by heat drying
PETN- olive green
RDX- light purple
1% or 5% DPA and UV exposure for 15 min.
NG- olive green
*Spotted 1 g of compound.
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