Registration Dossier
Registration Dossier
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EC number: 205-599-4 | CAS number: 143-33-9
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Cyanides are acutely and chronically toxic to aquatic organisms and to mammals. The No Adverse Effect Level is 0.001 mg/L in fish; the same concentration is the No Adverse Effect Concentration in algae. However, the cyanides have been demonstrated to be inherently biodegradable after a period of adaptation by the micro-organisms, and thus do not meet the PBT and vPvB criteria for persistence. Furthermore, cyanides have a log Kow less than 1 and bioconcentration factor (BCF) of approximately 3; therefore, cyanides are not considered to be bioaccumulative.
The cyanides have been carefully reviewed by previous authoritative bodies, and have been listed in Annex 1 of the Dangerous Substances Directive. According to Regulation (EC) No. 1272/2008, Annex VI, Table 3.1, Index No. 006 -007 -00 -5, concerning PBT/vPvB: "All category members, including potassium cyanide and sodium cyanide, are excluded as they are not persistent nor bioaccumulative." Thus, sodium cyanide is not a PBT or a vPvB.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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