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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Density

Currently viewing:

Administrative data

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report date:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method

Test material

Constituent 1
Chemical structure
Reference substance name:
Pyrazole
EC Number:
206-017-1
EC Name:
Pyrazole
Cas Number:
288-13-1
Molecular formula:
C3H4N2
IUPAC Name:
1H-pyrazole
Test material form:
other: solid
Details on test material:
Name of test material (as cited in study report): 1H-Pyrazole
Analytical purity: pure (not specified)
Lot/batch No.: QP 672

Results and discussion

Density
Type:
relative density
Density:
1.209
Temp.:
20 °C

Any other information on results incl. tables

Results in detail:

    1st determination 2nd determination
V Volume of pycnometer 25.2023 cm3 25.4635 cm3
A Mass of pycnometer empty
(corrected for air)
35.5233 35.8482
B Mass of pycnometer with test item
(corrected for air)
48.3350 48.5679
C Mass of pycnometer with test item and
displacement liquid
59.9517 60.4561
D Mass of displacement liquid calculated for
the total pycnometer volume
20.0535 20.2613
E Mass of test item (B - A) 12.8117 12.7197
F Mass of displacement liquid (C - B) 11.6167 11.8882
G Mass of displacement liquid calculated for
the volume taken by the test item (D - F)
8.4368 8.3731
H Density of the test item
(E/G * density of displacement liquid)
1.2083 g/cm3  1.2088 g/cm3
I Relative density D204(H/density of water
at 4°C)
mean: 1.209

Masses are listed in gram. Results are calculated from not rounded single values.

For calculation used densities:

Pair at room temperature: 0.0012 g/cm3

Pwater at 4°C: 1.0000 g/cm3

Applicant's summary and conclusion