Chemical formula; C8H10
Isomer: o- CAS[95-47-6]
Isomer: m- CAS[108-38-3]
Isomer: 4- (= p-) CAS[106-42-3]
Test organisms;
Rotifera: Brachionus calyciflorus (ref. ID; 121, 127)

4-Xylene
Test organisms;
Protozoa: Tetrahymena pyriformis (ref. ID; 3327)