Registration Dossier

Classification & Labelling & PBT assessment

PBT assessment

Administrative data

Assessed Substance

Assessed substance:
substance itself
Reference
Reference substance name:
Unnamed
Inventory number:
InventoryMultipleMappingImpl [inventoryEntryValue=EC 282-438-4]
IUPAC name:
trisodium bis[3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)]cobaltate(3-)
Identifier:
CAS number
Identity:
84204-70-6
Identifier:
IUPAC name
Identity:
Acid Brown 451
Identifier:
common name
Identity:
Acid Brown 451
CAS number:
84204-70-6
Molecular formula:
C32H20CoN10Na3O14S2
Molecular weight:
960.592
SMILES notation:
[Na+].[Na+].[Na+].CC1=NN(C2=C1\N=N\C1=C(O[Co-]3(O2)OC2=C(\N=N\C4=C(O3)C(=CC(=C4)[N+]([O-])=O)S([O-])(=O)=O)C(C)=NN2C2=CC=CC=C2)C(=CC(=C1)[N+]([O-])=O)S([O-])(=O)=O)C1=CC=CC=C1
InChl:
1S/2C16H13N5O7S.Co.3Na/c2*1-9-14(16(23)20(19-9)10-5-3-2-4-6-10)18-17-12-7-11(21(24)25)8-13(15(12)22)29(26,27)28;;;;/h2*2-8,22-23H,1H3,(H,26,27,28);;;;/q;;+3;3*+1/p-6/b2*18-17-;;;;
PBT status of the assessed substance:
the substance is not PBT / vPvB

Results of detailed PBT / vPvB assessment

Persistence

Evidence of non-P / non-vP properties
Screening criteria
Remark:
The substance is also considered not-readily biodegradable.
Criteria based on Annex XIII of REACH
Other evidence of non-P / non-vP properties
Remark:
Potential P of r vP
Conclusion
Conclusion on P / vP properties:
No conclusion can be reached based on available information

Bioaccumulation

Evidence of non-B / non-vB properties
Screening criteria
Not B and not vB based on: Log Kow ≤ 4.5
Remark:
The experimental Log Pow, based on the EU A.8 method,is -1.94 at pH 5.1 and temperature 25 °C (range -1.86 -2.05).
Furthermore, the substance has a high solubility (> 300 mg/L).                                                                                                                                  
Criteria based on Annex XIII of REACH
Not B and not vB based on: BCF ≤ 2,000 L/kg
Remark:
BCF for ionic compounds are predicted as 3.162 L/Kg (log Kow < 5.0), and it can be assumed that the substance has not a potential adsorption property on sediment and soil compartments.
Conclusion
Conclusion on B / vB properties:
not B/vB

Toxicity

Evidence of non-T properties
Criteria based on Annex XIII of REACH
Evidence of T properties
Conclusion
Conclusion on T properties:
No conclusion can be reached based on available information