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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

pH

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Administrative data

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

Data source

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

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
pH was measured with pH meter
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide
EC Number:
290-883-0
EC Name:
2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide
Cas Number:
90268-78-3
Molecular formula:
not applicable (UVCB substance)
IUPAC Name:
tetrasodium but-2-yne-1,4-diol 3-[(4-hydroxybut-2-yn-1-yl)oxy]propane-1-sulfonate 3-hydroxypropane-1-sulfonate 3-{[4-(3-sulfonatopropoxy)but-2-yn-1-yl]oxy}propane-1-sulfonate
Test material form:
solid: particulate/powder

Results and discussion

pH value
Key result
pH value:
12.2
Concentration:
43.6 vol%

Applicant's summary and conclusion

Conclusions:
A 43.6% solution of 2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide in water has a pH value of 12.2. Information was gathered scientifically reasonable, and it can be concluded that the solution exhibits corrosive effects.
Executive summary:

The pH of a 43.6% solution of 2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide in water was determined as 12.2 using a pH meter.