Registration Dossier
Registration Dossier
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EC number: 218-336-3 | CAS number: 2123-24-2
Additional physico-chemical information
Administrative data
- Endpoint:
- other: buffer capacity
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2013
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: Young et al.
- Qualifier:
- according to guideline
- Guideline:
- other: German TRGS 200, Annex I
- Principles of method if other than guideline:
- Determination of the alkaline or acidic reserve (buffer capacity) of a substance
- GLP compliance:
- no
Test material
- Reference substance name:
- Hexahydro-2H-azepin-2-one, sodium salt
- EC Number:
- 218-336-3
- EC Name:
- Hexahydro-2H-azepin-2-one, sodium salt
- Cas Number:
- 2123-24-2
- Molecular formula:
- C6H11NO.Na
- IUPAC Name:
- sodium 2-oxoazepan-1-ide
Constituent 1
Results and discussion
- Results:
- For sodium caprolactamat, the alkaline reserve was determined to be 5.13g (NaOH).
With this value, an estimation of the corrosive potential of the substance can be performed:
A substance has to be considered as corrosive, if the sum of the pH value and 1/12 of the alkaline reserve is higher than 14.5.
For sodium caprolactamat, this calculation results in 13.1 + 1/12*5.13 = 13.5
As this value is lower than 14.5, the substance would not have to be conisdered as "corrosive".
Applicant's summary and conclusion
- Conclusions:
- Although the determination of the alkaline reserve according to Young. would not result in a classification as "corrosive", the classification is applied as the pH value of the substance itself is 13.1 which is already higher than 11.5.
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