PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cyclotrimethylenetrinitramine; (RDX or Cyclonite) | 121-82-4 | 0483 |
13.00
14.01
11.01
14.02
4.08
4.05
7.01
8.00
7.00
11.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C3H6N6O6 | CYCLOTRIMETHYLENE TRINITRAMINE, [WET WITH >= 10% WATER], 1,3,5-TRIAZA-1,3,5-TRINITROCYCLOHEXANE, 1,3,5-TRINITRO-1,3,5-TRIAZACYCLOHEXANE, 1,3,5-TRINITROHEXAHYDRO-1,3,5-TRIAZINE, 1,3,5-TRINITROHEXAHYDRO-S-TRIAZINE, 1,3,5-TRINITROPERHYDRO-1,3,5-TRIAZINE, A 3, A 3 (EXPLOSIVE), COMPOSITION A 3, CPX 301, CX 84A, CYCLONITE, CYCLOTRIMETHYLENENITRAMINE, CYCLOTRIMETHYLENETRINITRAMINE, HEXAHYDRO-1,3,5-TRINITRO-1,3,5-S-TRIAZINE, HEXAHYDRO-1,3,5-TRINITRO-1,3,5-TRIAZINE, HEXAHYDRO-1,3,5-TRINITRO-S-TRIAZINE, HEXOGEN, HEXOGEN (EXPLOSIVE), HEXOGEN 5W, PBX 9407, PBX(AF) 108, PBX-B 2238, PBX-C 117, PBX-L 3, PBX-L 5, PBX-MC, PBX-MVF, PBX-W 108, PBXN 107, PBXN 107A, PBXN 108, PBXN 201, PBXN 6, PBXN(AF) 108, PBXW 108(E), PE 4, PE 4 (EXPLOSIVE), PHX 34, RDX, S-TRIAZINE, HEXAHYDRO-1,3,5-TRINITRO-, T4, TRIMETHYLENETRINITRAMINE, TS 1, TS 1 (PROPELLANT), V 29, V 29 (PROPELLANT), CYCLOTRIMETHYLENETRINITRAMINE, [WETTED WITH >= 15 % WATER, O, CYCLOTRIMETHYLENE TRINITRAMINE, [DESENSITIZED] | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 222.15 | S | 202 | 0.0004 | 110 | 1.82 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.21 | 2.3 | 14 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.023 | 0.25 | 1.5 |
Technical Basis
A review of available sources identified exposure limits (REL-STEL, TWAs) and animal toxicity data (LD50, LDLo, TDLo) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. Analyst selected the most current, lowest dose rat oral LD50 as the TEEL-3 basis. The TEEL-2 was derived according to Table 3.5. The REL-STEL was considered as a TEEL-1, however it resulted in a TEEL-1 > TEEL-2; instead, the PEL-TWA was selected as the TEEL-1 basis.
• PAC-1 = TEEL-1 = PEL-TWA (0.07 mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = LD50 rat oral (71 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 bases are both rat oral LD50; analysts selected the most current, lowest dose rat oral LD50 (Section 3.3.1), resulting in a more conservative value. The Rev. 29A and current TEEL-2 use the same methodology, with differences due to the change in TEEL-3. The Rev. 29A TEEL-1 was an REL-STEL; instead, the current TEEL-1 basis is a PEL-TWA (Section 3.4.2).
• PAC-1 = TEEL-1 = PEL-TWA (0.07 mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = LD50 rat oral (71 mg/kg)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 bases are both rat oral LD50; analysts selected the most current, lowest dose rat oral LD50 (Section 3.3.1), resulting in a more conservative value. The Rev. 29A and current TEEL-2 use the same methodology, with differences due to the change in TEEL-3. The Rev. 29A TEEL-1 was an REL-STEL; instead, the current TEEL-1 basis is a PEL-TWA (Section 3.4.2).
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Cyclonite
Exposure limits: https://www.osha.gov/chemicaldata/171
Rat LD50: Journal of applied toxicology, 25, pp 427-434. Retrieved from: https://chem.echa.europa.eu/100.004.092/dossier-view/dcc10303-51e4-4cb3-8464-991d2888f70b/IUC5-ca7b5059-bdeb-440b-8e40-d66a1b97729c_219c1fd4-174d-4240-976b-1f9b3a122339?searchText=121-82-4