2,4,6-Trinitrophenylmethylnitramine

  • Tetryl
  • N-Methyl-N,2,4,6-tetranitroaniline
  • Nitramine
  • Tetralite
  • Picrylnitromethylamine
  • Benzenamine, n-methyl-N,2,4,6-Tetranitro
Formula
C7H5N5O8
Structure
Description
Colorless to yellow, crystalline solid. Odorless.
Uses
Used as an explosive in detonators and primers, as an intermediary detonating agent for other less sensitive, high explosives, and as a booster charge for military devices, it may also be employed as an explosive charge.

Registry Numbers and Inventories.
CAS
479-45-8
EC (EINECS/ELINCS)
207-531-9
EC Index Number
612-017-00-6
EC Class
Explosive; Toxic; Danger of cumulative effects
RTECS
BY6300000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
0208
Merck
12,6664
Beilstein/Gmelin
964788
Beilstein Reference
4-16-00-00895
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H5N5O8
Formula mass
287.15
Melting point, °C
131.1
Boiling point, °C
504
Vapor pressure, mmHg
3E-10 (25 C)
Density
1.73 g/cm3 (15 C)
Solubility in water
200 mg/L
Partition coefficient, pKow
1.49
Heat of vaporization
77.3 kJ/mol
Heat of combustion
-1222 kJ/mol

Hazards and Protection.
Storage
Keepsolution in dark. Protect from shock.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Skin contact may be minimized by the use of impervious fabric clothing fastened at wrists & neck, rubberized aprons & half sleeves & caps or turbans.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Keep sparks, flames, and other sources of ignition away.
Stability
Is highly stable losing virtually no weight on prolonged storage at 80 C.
Incompatibilities
Contact of tetryl with some oxidizable materials may cause fires and explosions. Contact of hydrazine with n,2,4,6-tetranitroaniline caused ignition. Tetryl detonates spontaneously on contact with trioxygen difluoride.
Decomposition
May explosively decompose on shock, friction, or concussion. Decomposes explosively on heating to 187 C.

Fire.
Flash Point,°C
187 (explodes)
Fire fighting
Dangerously explosive. Do not fight fires in a cargo of explosives. Evacuate area and let burn.
Fire potential
Dangerous fire. Explosion risk
Hazards
Dangerously explosive. Do not fight fires in a cargo of explosives.
Combustion products
Toxic gases and vapors (such as oxides of nitrogen and carbon monoxide) may be released in a fire involving tetryl.

Health.
Exposure limit(s)
TLV: 1.5 mg/m3 (as TWA) (ACGIH 1997). OSHA PEL: TWA 1.5 mg/m3 skin NIOSH REL: TWA 1.5 mg/m3 skin NIOSH IDLH: 750 mg/m3
Exposure effects
Symptoms of CNS depression from tetryl exposure include weakness, malaise, headache, lassitude and narcosis.
   Ingestion
Nausea and vomiting have been reported with occupational exposure.
   Inhalation
Tetryl is a strong respiratory irritant.
   Skin
Tetryl is a strong skin and mucous membrane irritant.
   Eyes
Tetryl can cause inflammation of the eye and sensitization-type dermatitis on the eyelids.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move victim to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, pneumonitis or bronchits. Administer oxygen and assist ventilation as required.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.
UN number
0208
Response guide
Hazard class
1.1D
Std. Transport #
4901541