PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mevinphos; (Phosdrin) | 7786-34-7 | 2783 |
11.01
6.00
7.01
4.05
4.08
7.00
4.01
11.00
4.07
7.11
|
|||||||||
| Formula | Synonyms | |||||||||||
| C7H13O6P | MEVINPHOS MIXTURE, [LIQUID], 2-CARBOMETHOXY-1-METHYLVINYL DIMETHYL PHOSPHATE, MEVINPHOS | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 224.17 | S | 6.7 | 280 | 2.9 | 25 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.030 | 0.44 | 4.0 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.28 | 4.0 | 37 |
Technical Basis
A review of available sources identified exposure limits (IDH, STELs, TWAs). Data sources were selected according to the hierarchy listed in Table 3.1. The IDLH (1990/1994) was selected as the TEEL-3. The LOC was selected as the TEEL-2. The PEL-STEL was selected as the TEEL-1.
• TEEL-1 = 0.03 ppm PEL-STEL
• TEEL-2 = 0.004 gm/m3 LOC
• TEEL-3 = 4 ppm IDLH (1990)
This review resulted in TEEL-3 values that are inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 source are both the mevinphos IDLH; however, the current TEEL-3 resulted in a different value when converted to units of mg/m3. The Rev. 29A TEEL-3 values are note reported in units of ppm. The Rev. 29A and current TEEL-2/TEEL-1 values, sources, and methodology are consistent.
• TEEL-1 = 0.03 ppm PEL-STEL
• TEEL-2 = 0.004 gm/m3 LOC
• TEEL-3 = 4 ppm IDLH (1990)
This review resulted in TEEL-3 values that are inconsistent with Rev. 29A. The Rev. 29A and current TEEL-3 source are both the mevinphos IDLH; however, the current TEEL-3 resulted in a different value when converted to units of mg/m3. The Rev. 29A TEEL-3 values are note reported in units of ppm. The Rev. 29A and current TEEL-2/TEEL-1 values, sources, and methodology are consistent.
References
Chemical information and exposure limits: https://www.osha.gov/chemicaldata/661
OELs: https://ilv.ifa.dguv.de/limitvalues/42273
IDLH: https://www.cdc.gov/niosh/idlh/7786347.html
LOC. Appendix C, pg. C-6. https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf