2,2'-azobis[2-methylbutyronitrile]

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: This study was selected as the key study because the information provided for the hazard endpoint is sufficient for the purpose of classification and labeling and/or risk assessment.

Qualifier:

according to guideline

Guideline:

other: ASTM Method B923-10 Standard Test Method for Metal

Deviations:

no

Remarks:

The study was conducted according to the test guidelines in effect at the time of study conduct.

GLP compliance:

not specified

Type of method:

pycnometer method

Type:

relative density

Density:

1.058 g/cm³

Temp.:

20 °C

Conclusions:

This study and the conclusions which are drawn from it fulfill the quality criteria (validity, reliability, repeatability).
Density = 1.058 g/cm3

Executive summary:

Density of the test substance was measured using helium pycnometry according to ASTM B923 -10 with slight alterations. Specifically, the test sample (< 1 g) was outgassed at room temperature in a vacuum oven for 16 h, weighed before charging to the sample holder and placed in the Micromeritics AccuPyc 1330 instrument. The total sample weight loss after drying was 1.83%. The sample was flushed fifteen times with helium and the volume of the sample measured a total of ten times. The average volume was divided by the measured mass of the sample to determine density. The density was 1.058 g/cm3

Description of key information

1.058 g/cm3

Key value for chemical safety assessment

Relative density at 20C:

1.058

Additional information

ASTM Method B923-10, pycnometer method