Substance [CAS No.]Documentation date:​)
Styrene [100-42-5] (2020
TWA: 10 ppm
STEL: 20 ppm
Notations: OTO; A3; BEI
MW: 104.15
TLV® Basis: CNS & hearing impair; URT irr; peripheral neuropathy; visual disorders

BIOLOGICAL EXPOSURE DETERMINANTSStyrene [100-42-5] (2022
Determinant: Mandelic acid plus phenylglyoxylic acid in urine
Sampling Time: End of shift
BEI®: 150 mg/g creatinine
Notation: Ns
Determinant: Styrene in urine
Sampling Time: End of shift
BEI®: 20 μg/L
Notation: —

Substance [CAS No.]Documentation date:​)
Styrene oxide [96-09-3] (2020
TWA: 1 ppm
STEL: Non
Notations: Skin; DSEN; A3
MW: 120.15
TLV® Basis: URT irr; blood changes