Registration Dossier
Registration Dossier
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EC number: 403-530-4 | CAS number: 129423-54-7 PV-ECHTGELB HGR
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Based on the aerobic aquatic biodegradation screening test (OECD 301D) it is not readily biodegradable in water (deg-% 35 after 28 d). Substance is hydrolytically stable with a half-life of over one year at test temperature of 50˚C. As a conclusion of the biotic and abiotic degradation, substance is considered as persistent material. However, the octanol-water partition coefficient (log Kow 1.8442) is not indicating substance to have adsorption potential as the log Kow is less than 4. Based on the adsorption coefficient of 26.3 L/kg (log Koc 1.42; OECD 121), it is not considered as having a strong potential for adsorption to soil and organic matter. According to all available data on the substance it is not considered as persistent or bioaccumulative.
Pigment yellow 191 is not toxic to aquatic organisms based on the lowest key study value. The 72 h EC50 (Desmodesmus subspicatus;growth rate) at its maximum solubility (90 mg/l) did not cause inhibition - toxic effects, but there was observed the opposite effect – a stimulation of growth. No effective – inhibition concentrations could be calculated (OECD 201). EC50 value > 90 mg/l. The substance is not classified as mutagenic, toxic to reproduction or toxic to specific target organ after repeated exposure. There is no data to evaluate carcinogenity.
- Likely routes of exposure:
No need to evaluate as the substance is not PBT or vPvB.
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