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Physical & Chemical properties

Nanomaterial surface chemistry

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Administrative data

Endpoint:
nanomaterial surface chemistry
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
publication
Title:
Consequences of European Directive 2005/69/EC for Tire Industry
Author:
Bergmann C, Trimbach J, Haase-Held M, Seidel A
Year:
2011
Bibliographic source:
Kautschuk Gummi Kunststoffe, October 2011, 24-35

Materials and methods

Test material

Constituent 1
Chemical structure
Reference substance name:
Carbon black
EC Number:
215-609-9
EC Name:
Carbon black
Cas Number:
1333-86-4
Molecular formula:
C
IUPAC Name:
Carbon black
Test material form:
solid

Results and discussion

Any other information on results incl. tables

The low PAH amounts that were extractable with toluene from cured rubber compounds (containing 30% carbon black) suggest that the PAHs become part of the network formed during the vulcanizat ion process.

The sum of 8 EU priority PAHs that migrated into toluene from uncured and cured rubbe r compounds was low (total immersion, 168h at 30°C). For uncured compounds the total 8 EU PAH were less than 2 mg/L (ppm); from cured compounds it was less than 0.05 mg/L (ppm); migration of PAHs from uncured and cured rubber samples into artificial sweat, saliva and water was below the limit of quantification.

Applicant's summary and conclusion

Conclusions:
Migration of PAHs from uncured and cured rubber samples into artificial sweat, saliva and water was below the limit of quantification.
Executive summary:

The low PAH amounts that were extractable with toluene from cured rubber compounds (containing 30% carbon black) suggest that the PAHs become part of the network formed during the vulcanizat ion process.

The sum of 8 EU priority PAHs that migrated into toluene from uncured and cured rubbe r compounds was low (total immersion, 168h at 30°C). For uncured compounds the total 8 EU PAH were less than 2 mg/L (ppm); from cured compounds it was less than 0.05 mg/L (ppm); migration of PAHs from uncured and cured rubber samples into artificial sweat, saliva and water was below the limit of quantification.