Registration Dossier
Registration Dossier
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EC number: 229-208-1 | CAS number: 6428-31-5
Endpoint summary
Administrative data
Description of key information
Additional information
The tested substance is not hydrolysable, not biodegradable and does not bioaccumulate based on experimental result of Kow value.
Release to air, an estimated vapour pressure of 10 -6 Pa at 25 deg C indicates that Direct Black 19 will not exist if not in dust particles in the atmosphere. In vapour-phase Direct Black 19 will be slowly degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; degradation in sunlight also occurs.
If released to soil, Direct Black 19 is expected to have very high mobility based upon a measured Koc of 1 determined for a similar substance. Volatilization from moist soil surfaces is not expected to be an important fate process based upon an estimated Henry's Law constant of 10E-32 atm-m3/mole.
The substance is not ready biodegradable. If released into water, Direct Black 19 is not expected to adsorb to suspended solids and sediment based upon the measured Koc.
Estimated volatilization half-lives for a model river and model lake are about 1032days.
An estimated BCF of 3 suggests the potential for bioconcentration in aquatic organisms is low. Direct Black 19 doesn’t hydrolyzes easily.
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