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PBT assessment

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PBT assessment: overall result

Reference
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.