Sintox Primer
Definition
Lead-free, heavy-metal-free primer chemistry developed by RUAG. Uses diazodinitrophenol (DDNP), tetrazenes and potassium nitrate. Modern Sintox GSR particles contain Zn, Ti and Sr, not Pb-Ba-Sb, which forces the SEM-EDX criteria to be widened.
Related terms
- ASTM E1588
- ASTM International standard practice for gunshot residue analysis by scanning electron microscopy with energy-dispersive spectrometry. Defines particle classification (characteristic, consistent-with, indicative), morphology...
- Dermal Nitrate (Paraffin) Test
- Historical test where molten paraffin was cast on the suspect's hand and the cast was sprayed with diphenylamine in sulphuric acid. Blue...
- GSR
- Gunshot residue. The mix of particles ejected from a firearm on discharge, composed of primer metals (Pb, Ba, Sb), propellant residues (nitrites,...
- Modified Griess Test
- A contact-transfer colour chemistry test for nitrite-containing propellant combustion residue. Sulphanilic acid undergoes diazotisation with nitrous acid (from NO2 on the target...
- Primer
- The small explosive cup at the base of a cartridge that ignites the propellant. Conventional primers use lead styphnate, barium nitrate and...
- SEM-EDX
- Scanning electron microscopy with energy-dispersive X-ray spectroscopy. The electron beam excites characteristic X-rays from each element present in the target grain, giving...
- Sodium Rhodizonate Test
- Colour test for lead. The cloth is treated with sodium rhodizonate followed by buffer; lead deposits give a pink-to-red colour, confirmed with...
Explained in
- Gunshot Residue (GSR) Analysis: Detection MethodsLead-free, heavy-metal-free primer chemistry developed by RUAG. Uses diazodinitrophenol (DDNP), tetrazenes and potassium nitrate. Modern Sintox GSR particles c...