PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Polymethylene polyphenyl isocyanate; (Polymeric diphenylmethane diisocyanate) | 9016-87-9 |
5.10
4.01
11.00
4.06
8.00
4.07
10.00
3.02
4.10
4.11
|
||||||||||
| Formula | Synonyms | |||||||||||
| POLYMERIC DIPHENYLMETHANE DIISOCYANATE, PAPI, POLYMETHYLENE POLYPHENYL ISOCYANATE | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 0 | L | 25 | 1.24 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.15 | 3.6 | 22 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0 | 0 | 0 |
Technical Basis
A review of available sources identified the following: a MAK-TWA and rat LC50 acute toxicity data. Data sources were selected according to the hierarchy listed in Table 3.1. The rat LC50 was selected as the TEEL-3 basis, scaled to 60-minute equivalent using the ten Berge equation (Section 3.3.4), and evaluated using factors in Table 3.4. TEEL-2 values were derived according to Table 3.5. The MAK-TWA was selected as the TEEL-1 basis.
• TEEL-1 = MAK-TWA (0.05 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (490 mg/m3/4H)
This review generated TEEL values consistent with Rev. 29A.
• TEEL-1 = MAK-TWA (0.05 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat LC50 (490 mg/m3/4H)
This review generated TEEL values consistent with Rev. 29A.
References
Rat LC50. Retrieved from: https://haz-map.com/Agents/1087
MAK-TWA. Retrieved from: https://onlinelibrary.wiley.com/doi/pdf/10.1002/9783527695539.oth1