Screening assessment on MBMBP phenols: chapter 4
Physical and Chemical Properties
Experimental and modelled data are available for MBMBP.
Table 2 contains experimental and modelled physical and chemical properties for the neutral form of MBMBP that are relevant to its environmental fate.
| Property | Value | Measured/ Predicted | Reference |
|---|---|---|---|
| Physical state (at 20°C and 101.325 kPa) | Solid | - | - |
| Melting point (°C) | 130-131 | measured | Beilstein database 2000 |
| Melting point (°C) | 118-128 | not stated | HSDB 1998 |
| Boiling point (°C) (at 0.07 hPa) | 187 | measured | European Chemicals Bureau 1995 |
| Vapour pressure (Pa) | 4.7 x 10-11 | predicted | Sumitomo Chemical Co Ltd. 2000 |
| Vapour pressure (Pa) | 3.31 x 10-7 (2.48 x 10-9 mmHg) | predicted | EPIWIN 3.11 |
| Water solubility (mg/L) | 0.02 | not stated | CITI 1992 |
| Log Kow (Octanol-water partition coefficient) (dimensionless) | 6.25 | measured | OECD 2001 |
| Koc (Organic carbon-water partition coefficient) (dimensionless) | 1.5 x 105 | predicted | OECD 2001 |
| Log Koc | 6.63 | predicted | EPIWIN 3.11 |
| pka (Acid dissociation constant) (dimensionless) | 11.92 and 12.93 | predicted | CompuDrug Chemistry Ltd. 1995 |
| Henry’s Law constant (Pa∙m3/mol) Footnote a | 8.0 x 10-7 | predicted | OECD 2001 |
| Constant for reaction with OH- radicals in air (cm3/molecules-sec) | 40.86 x 10-12 | predicted | Kwok and Atkinson 1995 |