[Indoor air guide values for ethylbenzene].

Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz (2012-09-01)
ABSTRACT

The German Working Group on Indoor Guidelines of the Federal Environment Agency and the States' Health Authorities is issuing indoor air guide values to protect public health. No human studies are available for health evaluation of ethylbenzene in indoor air. In a well documented subchronic inhalation animal study assessed as reliable, ototoxic effects were observed (LOAECsubchronic = 870 mg/m³). The Working Group assessed a LAEC of 186 mg ethylbenzene/m³ for the endpoint ototoxicity. By applying a factor of 2 to extrapolate from subchronic to chronic exposure, an interspecies factor of 2.5, a factor of 10 for interindividual variability, and a factor of 2 to account for the higher respiratory rate of children compared to adults, a health hazard guide value (RW II) of 2 mg ethylbenzene/m³ is obtained. A precautionary guide value (RW I) of 0.2 mg ethylbenzene/m³ is recommended.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethylbenzene, anhydrous, 99.8%
Supelco
Ethylbenzene, analytical standard
Sigma-Aldrich
Ethylbenzene, ReagentPlus®, 99%
Supelco
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 5 mm × 8 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 10% in chloroform-d (99.8 atom % D)
Supelco
Ethylbenzene solution, certified reference material, 5000 μg/mL in methanol
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 1% in chloroform-d (99.8 atom % D)
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 5 mm × 8 in. , ultra-thin wall
Supelco
Ethylbenzene solution, NMR reference standard, 10% in chloroform-d (99.8 atom % D), NMR tube size 5 mm × 8 in. , ultra-thin wall
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 10% in chloroform-d (99.8 atom % D), NMR tube size 10 mm × 8 in.
Supelco
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), NMR tube size 5 mm × 8 in.
Supelco
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), NMR tube size 3 mm × 8 in.
Supelco
Ethylbenzene solution, NMR reference standard, 10% in chloroform-d (99.8 atom % D), NMR tube size 3 mm × 8 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.1 %
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 5% in chloroform-d (99.8 atom % D), TMS 1 %, NMR tube size 5 mm × 7 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d ("100%", 99.96 atom % D)
Supelco
Ethylbenzene solution, NMR reference standard, 5% in chloroform-d (99.8 atom % D), TMS 2 %, NMR tube size 3 mm × 8 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 10 mm × 8 in.
Supelco
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), chromium(III) acetylacetonate 0.1 mg/mL, TMS 0.01 %, NMR tube size 5 mm × 8 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 8 mm × 8 in.
Sigma-Aldrich
Ethylbenzene solution, NMR reference standard, 5% in chloroform-d (99.8 atom % D), TMS 2 %, NMR tube size 5 mm × 8 in.
Supelco
Ethylbenzene solution, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 3 mm × 8 in.