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CAS number
101-68-8Alternate name
4,4-methylene diphenyl diisocyanate, 4,4-methylene bisphenyl isocyanate, MDI, diphenylmethane diisocyanateWorkplace exposure standards
- TWA
- -
- 0.02 mg/m3
- STEL
- -
- 0.07 mg/m3
- CEILING
- -
- -
Notations
dsen: Dermal sensitiser.
rsen: Respiratory sensitiser.
ifv: Inhalable fraction and vapour.
†: This is an interim WES or BEI
- Notes
- WES values apply to all isocyanates, including prepolymers, present in the workplace air as vapours, mist or dust
- Year adopted
- 2022
- Next review
- -
Biological exposure index
- Determinant
- 4,4-Diaminodiphenyl in urine (following hydrolysis)
- Sampling Time
- End of shift or end of exposure
- BEI
- 10µg/g creatinine
- Notes
- -
- Year adopted
- 2018
External resources
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