Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24 August 2017 - 12 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

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The appearance was determined by visual observation (direct and under a microscope). No guideline was followed for the appearance determination but sufficient details were given in the study report.
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Pregnenolone
EC Number:
205-647-4
EC Name:
Pregnenolone
Cas Number:
145-13-1
Molecular formula:
C21H32O2
IUPAC Name:
3-hydroxypregn-5-en-20-one
Test material form:
solid: particulate/powder
Details on test material:
- Physical appearance: white crystalline powder
- Storage conditions: at room temperature

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Form / colour / odour
Key result
Form:
solid: crystalline
Colour:
white
Odour:
other: not determined
Substance type:
organic

Any other information on results incl. tables

A test substance sample was observed to be a fine white crystalline powder with some clusters. At 100x magnification under a microscope, the particles appeared to be irregular shaped crystals. At 400x magnification, the sample was observed to be made up of single crystalline particles.

Applicant's summary and conclusion

Conclusions:
The substance is a white crystalline powder at room temperature.