Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Referenceopen allclose all

Reference Type:
other company data
Title:
Unnamed
Year:
2015
Report date:
2015
Reference Type:
other company data
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
pH determination using 10 g in 60 mL (10:6 iso:water) (test method ST-31.36)

Test material

Constituent 1
Chemical structure
Reference substance name:
Tris(2-hydroxyethyl)methylammonium hydroxide
EC Number:
251-624-7
EC Name:
Tris(2-hydroxyethyl)methylammonium hydroxide
Cas Number:
33667-48-0
Molecular formula:
C7H18NO3.HO
IUPAC Name:
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methylethanaminium hydroxide
Constituent 2
Chemical structure
Reference substance name:
2-hydroxy-N-(2-(2-hydroxyethoxy)ethyl)-N-(2-hydroxyethyl)-N-methylethan-1-amininium hydroxide
Molecular formula:
C9H22NO4.HO
IUPAC Name:
2-hydroxy-N-(2-(2-hydroxyethoxy)ethyl)-N-(2-hydroxyethyl)-N-methylethan-1-amininium hydroxide
impurity 1
Chemical structure
Reference substance name:
2,2'-methyliminodiethanol
EC Number:
203-312-7
EC Name:
2,2'-methyliminodiethanol
Cas Number:
105-59-9
Molecular formula:
C5H13NO2
IUPAC Name:
2,2'-(methylimino)diethanol
impurity 2
Chemical structure
Reference substance name:
Water
EC Number:
231-791-2
EC Name:
Water
Cas Number:
7732-18-5
Molecular formula:
H2O
IUPAC Name:
Dihydrogenoxide
Test material form:
liquid
Remarks:
brown viscous liquid
Specific details on test material used for the study:
- Material No: 248173
- Inspection Lot: 890001159066
- Batch: 8C102
- Batch number: TD98C02E
- Water: 36.08540 wt%
- THEMAH: 48.170 wt%
- MDEA Assay: 12.910 wt%

Reagents

Reagent:
other: iso:water

Results and discussion

pH value
Key result
pH value:
13.9
Remarks on result:
other: 10 g/60 mL 10:6 iso:water

Applicant's summary and conclusion

Conclusions:
The pH of the test substance is determined to be 13.9.