Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
no
Type of method:
ring method

Test material

Constituent 1
Reference substance name:
L-Cysteine hydrochloride monohydrate
IUPAC Name:
L-Cysteine hydrochloride monohydrate
Test material form:
solid: crystalline
Details on test material:
- Name of test material (as cited in study report): L-Cysteine Hydrochloride Monohydrate
- Molecular formula (if other than submission substance): C3H8O2NSCIxH2O
- Molecular weight (if other than submission substance): 175.64
- Analytical purity: 99,97 %
- Batch: 57121771
- Expiry Date: 2013-08-01
- Stability under test conditions: not known.
IN ACCORDANCE WITH ARTICLE 2(7)(b) and Annex V (6), REACH the L-Cysteine hydrochloride is registered (hydrate free
form). L-Cysteine hydrochloride monohydrate (CAS 7048-04-6) is manufactured and imported and was used for testing.

Results and discussion

Surface tension
Key result
Surface tension:
72 mN/m
Temp.:
20 °C
Conc.:
1 000.5 mg/L

Any other information on results incl. tables

The aqueous solution of the test item had a mean surface tension of 72.0 mN/m according to European Commission Regulation (EC) No. 440/2008 (A.5 Surface tension of aqueous solutions) and to OECD 115.Due to the fact that the surface tension was higher than 60.0 mN/m, the test item had no surface-active properties.

Applicant's summary and conclusion