Registration Dossier
Registration Dossier
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EC number: 232-304-6 | CAS number: 8002-26-4 A complex combination of tall oil rosin and fatty acids derived from acidulation of crude tall oil soap and including that which is further refined. Contains at least 10% rosin.
PBT assessment
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Administrative data
PBT assessment: overall result
- Type of composition:
- boundary composition of the substance
- State / form:
- liquid
- PBT status:
- the substance is not PBT / vPvB
- Likely routes of exposure:
Overall conclusion: Based on the assessment described in the subsections above the submission substance is not a PBT / vPvB substance.
The properties of the constituent blocks are summarised in Table 8.1 and the following conclusions are drawn from the analysis:
- There are no constituents of DTO that meet the criteria for CMR category 1 or 2
- None of the constituents meet the PBT/vPvB criteria when considered individually, but the constituents present in block 10 (Abietal block) do, if their total abundance is taken into consideration. Further work is ongoing to assess this constituent block.
- Testing is ongoing as per ECHA communication number CCH-D-2114412576-50-01/F dated July 09, 2018 and this section will be updated once the results of the tests are available.
The overall conclusion is that the substance does not contain constituents that should be considered as SVHC.
Table 8.1: Summary of properties of DTO constituent blocks in relation to criteria for “Substances of Very High Concern”
Constituent main group
Block
Constituents
Percentage block in substance
CMR
Persistence (P)
Bioaccumulation (B)
Toxicity (T)*
Endocrine disruption potential
Fatty acids
1
Low boiling fatty acids
0.030
Not P
Not B
Not T
-No
2
C16 saturated - C18.3 unsaturated fatty acids
51
Not P
B or vB
Not T
No
3
C18 saturated - C24 saturated and unsaturated fatty acids
16
Not P
vB
Borderline T
No
Resin acids
4
Abietic acid
20
Not P
Not B
Not T
Possible
5
Palustric acid
1.5
Not P
Not B
Not T
Possible
6
Pimaric acid
5.7
Not P
Not B
Not T
Possible
Neutrals
7
Sesquiterpene
0.010
Not P
Vb
T
No-
8
Abietol
0.00
Not P
B
Not T
-
9
Tetracosanol and dehydrated sterol
2.5
Not P
vB
Not T
Yes
10
Aldehydes
0.26
P or vP
vB
T
Possible
11
Dimethoxystilbene
0.070
Not P
Not B
Not T
No
12
Sitosterols and analoque
0.0022
P or vP
vB
Not T
Yes
Polymers[1]
13
Polymeric acids
3.2
P
Not B
Not T
No
14
Polymeric neutrals
0.27
P
Not B
Not T
No
[1]The polymeric constituents of DTO are expected to be persistent in the environment; however, these groups of constituents would be expected not to bioaccumulate due to their high molecular weight.
Reference
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