PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manganese tricarbonyl methylcyclopentadienyl | 12108-13-3 | 2810 |
15.01
7.01
15.02
11.01
11.00
4.05
8.00
4.06
4.09
4.10
|
|||||||||
| Formula | Synonyms | |||||||||||
| MnO3C9H7 | METHYLCYCLOPENTADIENYLMANGANESE TRICARBONYL, (METHYLCYCLO- PENTADIENYL)TRICARBONYLMANGANESE, (METHYLCYCLOPENTADIENYL)MANGANESE TRICARBONYL, (METHYLCYCLOPENTADIENYL)TRICARBONYLMANGANESE, 2-METHYLCYCLOPENTADIENYL MANGANESE TRICARBONYL, 2-METHYLCYCLOPENTADIENYL MANGANESETRICARBONYL, 2-METHYLCYCLOPENTADIENYLMANGANESE TRICARBONYL, AK-33X, ANTIKNOCK-33, CI-2, COMBUSTION IMPROVER C-12, COMBUSTION IMPROVER-2, MANGANESE TRICARBONYLMETHYLCYCLOPENTADIENYL, MANGANESE, TRICARBONYL METHYLCYCLOPENTADIENYL, MANGANESE, TRICARBONYL((1,2,3,4,5-ETA)-1-METHYL-2,4-CYCLOPEN, MANGANESE, TRICARBONYL(METHYL-PI-CYCLOPENTADIENYL)-, MANGANESE, TRICARBONYL(METHYLCYCLOPENTADIENYL)-, METHYLCYCLOPENTADIENYL MANGANESE TRICARBONYL, METHYLCYMANTRENE, MMT, PI-METHYL- CYCLOPENTADIENYLMANGANESE TRICARBONYL, PI-METHYLCYCLOPENTADIENYLMANGANESE TRICARBONYL, TRICARBONYL(2-METHYLCYCLOPENTADIENYL) MANGANESE, TRICARBONYL(2-METHYLCYCLOPENTADIENYL)MANGANESE, TRICARBONYL(ETA(5)-METHYLCYCLOPENTADIENYL)MANGANESE, TRICARBONYL(ETA5-METHYLCYCLOPENTADIENYL)MANGANESE, TRICARBONYL(ETA5-METHYLCYCLOPENTADIENYL)MANGANESE(I), TRICARBONYL(METHYL-PI-CYCLOPENTADIENYL)MANGANESE, TRICARBONYL(METHYLCYCLOPENTADIENYL) MANGANESE, TRICARBONYL(METHYLCYCLOPENTADIENYL)MANGANESE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 218.1 | L/S | 1.5 | 233 | 7.3 | 100 | 1.388 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.30 | 0.60 | 6.9 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.034 | 0.067 | 0.77 |
Technical Basis
A review of available sources identified the following: rat LC50 toxicity data and exposure limits (LOC, TWAs). Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data was 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. The rat LC50 was selected as the TEEL-3 basis and scaled to a 60-minute equivalent using the ten Berge equation (Section 3.3.4). The LOC was selected as the TEEL-2. The OEL-TWA (Latvia) was selected as the TEEL-1 basis.
• TEEL-1 = OEL-TWA (0.1 mg/m3) x 3
• TEEL-2 = LOC (0.0006 g/m3)
• TEEL-3 = Rat LC50 (247 mg/m3/1H)
This review generated TEEL values that are consistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a TLV-TWA, while the current TEEL-1 basis is an OEL-TWA from Latvia, resulting in the same TEEL-1 value.
• TEEL-1 = OEL-TWA (0.1 mg/m3) x 3
• TEEL-2 = LOC (0.0006 g/m3)
• TEEL-3 = Rat LC50 (247 mg/m3/1H)
This review generated TEEL values that are consistent with Rev. 29A. The Rev. 29A TEEL-1 basis was a TLV-TWA, while the current TEEL-1 basis is an OEL-TWA from Latvia, resulting in the same TEEL-1 value.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/60196372
LOC Appendix C, pg. C-6. https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
Exposure limits: https://www.osha.gov/chemicaldata/159
OEL-TWA (Latvia): https://ilv.ifa.dguv.de/limitvalues/60050
Rat Inhalation LC50 (247 mg/ m3/1hr). Hinderer RK. 1979. Toxicity studies of methylcyclopentadienyl manganese tricarbonyl (MMT). Am Ind Hyg Assoc J 40:164-167. ). Retrieved from Section 3.2.1.1, pg. 60 from: https://www.atsdr.cdc.gov/ToxProfiles/tp151.pdf