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EC number: 219-137-4 | CAS number: 2370-88-9
Conditions during exposure.
Time point (30 min. intervals)
Measured conc. (ppm)
Measured conc. (mg/l)
Air flow (L/min)
An acute inhalation study was performed with a mixture of 2,4,6,8,10-pentamethylcyclopentasiloxane (CAS 6166-86-5) and 2,4,6,8-tetramethylcyclotetrasiloxane. Five male and five female animals were exposed in a whole-body exposure chamber for 4 hours and subsequently observed for 14 days. Only one dose was tested: nominal 5 mg/l, measured 4.9 mg/l. No mortalitiy or any clinical signs were observed. The LC50 of the mixture is > 4.9 mg/l.
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