Registration Dossier
Registration Dossier
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EC number: 435-860-1 | CAS number: 214417-91-1
Additional physico-chemical information
Administrative data
- Endpoint:
- other: leakage/migration from a vulcanized rubber into water
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- November 2007
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Investigation of possible elution of the substance (BMH) and/or of its hydrolysis products, from
a vulcanized rubber with water (kind of leakage/migration test).
The study was performed according to OECD 120 guideline,
although not under GLP conditions.
The original methods with "High-Performance Liquid
Chromatography" was applied to the analysis of eluted
substances into water, in order to divide the derived
substance from BMH substance from the other eluted substance
from the vulcanized rubber.
Vulcanized rubber particles size used for the analysis were
ca. 2 cubic millimeters. - GLP compliance:
- not specified
Test material
- Details on test material:
- - Name of test material (as cited in study report): BMH
Constituent 1
Results and discussion
- Results:
- This study confirmed that only low quantities of two
substances are eluted from the vulcanized rubber:
- 3-hydroxy-2-naphtoichydrazide (HNH, CAS no. 5341-58-2) (maximum 5.7 x 10^-3 wt% of rubber at pH7 at 37 deg. cel.), which is derived as the hydrolysis product of BMH
- BMH (maximum 8.9 x 10^-4 wt% of rubber at pH7 at 37 deg. cel.)
Any other information on results incl. tables
See the attachment.
Applicant's summary and conclusion
- Conclusions:
- In this study, possible elution of the substance (BMH) and/or of its hydrolysis products was investigated, from a vulcanized rubber with water (kind of leakage/migration test). The study shows that at pH=7 and T=37 degrees Celsius around 0.001 wt% of BMH and 0.007 wt% of the hydrolysis product HNH was eluted in 24 hours from the rubber sample in water. These amounts were significantly lower at 20 degrees Celsius.
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