NIOSH Pocket Guide to Chemical Hazards


CAS 121-82-4


RTECS XY9450000
Synonyms & Trade Names
Cyclotrimethylenetrinitramine; Hexahydro-1,3,5-trinitro-s-triazine; RDX; Trimethylenetrinitramine; 1,3,5-Trinitro-1,3,5-triazacyclohexane
DOT ID & Guide


NIOSH REL: TWA 1.5 mg/m3 ST 3 mg/m3 [skin]
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX Conversion
Physical Description
White, crystalline powder. [Note: A powerful high explosive.]
MW: 222.2
BP: ?
MLT: 401°F
Sol: Insoluble
VP(230°F): 0.0004 mmHg
IP: ?

Sp.Gr: 1.82
Fl.P: Explodes
UEL: ?
LEL: ?

Combustible Solid [EXPLOSIVE!]
Incompatibilities & Reactivities
Strong oxidizers, combustible materials, heat [Note: Detonates on contact with mercury fulminate.]
Measurement Methods
NIOSH 0500
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin; headache, irritability, lassitude (weakness, exhaustion), tremor, nausea, dizziness, vomiting, insomnia, convulsions
Target Organs Eyes, skin, central nervous system