Registration Dossier

Physical & Chemical properties

Viscosity

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Administrative data

Endpoint:
viscosity
Type of information:
not specified
Adequacy of study:
supporting study
Study period:
No data
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Secondary literature source.

Data source

Reference
Reference Type:
review article or handbook
Title:
Kirk-Othmer encyclopedia of chemical technology.
Author:
Kirk-Othmer
Year:
1992
Bibliographic source:
Kirk-Othmer encyclopedia of chemical technology. John Wiley & Sons Inc., New York. Vol. 4: 369.

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: No data
Deviations:
not specified
Principles of method if other than guideline:
No data
GLP compliance:
not specified
Type of method:
other: No data

Test material

Constituent 1
Chemical structure
Reference substance name:
Diboron trioxide
EC Number:
215-125-8
EC Name:
Diboron trioxide
Cas Number:
1303-86-2
Molecular formula:
B2O3
IUPAC Name:
bicyclo[1.1.1]diboroxane
Details on test material:
- Name of test material: Boric oxide

Results and discussion

Viscosityopen allclose all
Temp.:
other: 260.0°C
Parameter:
other: Pa.s
Value:
61 000 000 000
Temp.:
other: 500.0°C
Parameter:
other: Pa.s
Value:
3 900
Remarks on result:
other: Boric oxide is a solid substance. It becomes pourable on heating at 500 °C.

Applicant's summary and conclusion

Conclusions:
Boric oxide is a solid substance. Boric oxide becomes pourable on heating to about 500 ºC. The viscosity of the test substance was reported as 6.1E10 Pa.s at 260 ºC; and 3.9E03 Pa.s at 500 ºC.