Registration Dossier
Registration Dossier
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EC number: 201-180-5 | CAS number: 79-14-1
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP and guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The substance was sieved (180µm). The proportion of the substance with particle size less than 180µm was determined by weight.
- GLP compliance:
- yes
- Type of method:
- sieving
- Type of distribution:
- counted distribution
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- No.:
- #1
- Size:
- > 180 µm
- Distribution:
- ca. 100 %
- Conclusions:
- The solid form of glycolic acid (glycolic acid >99%) does not contain any particles < 180 µm.
- Executive summary:
The proportion of glycolic acid >100% with particle size less than 180µm was determined by weight. It was determined that the solid form of glycolic acid (glycolic acid >99%) does not contain any particles < 180 µm.
Reference
No particles went through the sieve, therefore all particles are greater than 180µm.
Description of key information
0% with particle size <180 µm
Additional information
The proportion of glycolic acid >99% with particle size less than 180 µm was determined by weight. It was determined that the solid form of glycolic acid (glycolic acid >99%) does not contain any particles <180 µm. For the aqueous forms of glycolic acid (i.e. glycolic acid 70% solution), the substance is in liquid form and therefore a granulometry study is not required.
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