;

CAS number

101-68-8

Alternate name

4,4-methylene diphenyl diisocyanate, 4,4-methylene bisphenyl isocyanate, MDI, diphenylmethane diisocyanate

Workplace exposure standards

TWA
-
0.02 mg/m3
STEL
-
0.07 mg/m3
CEILING
-
-

Notations

dsen: Dermal sensitiser.

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rsen: Respiratory sensitiser.

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ifv: Inhalable fraction and vapour.

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†: This is an interim WES or BEI

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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

View this substance on PubChem

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