Registration Dossier
Registration Dossier
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EC number: 226-540-9 | CAS number: 5421-46-5
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2007-11-01
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Principles of method if other than guideline:
- method A1 of Commision Directive 92/69/EEC
- GLP compliance:
- no
- Type of method:
- oscillating densitimeter
- Key result
- Type:
- relative density
- Density:
- 1.234
- Temp.:
- 20 °C
Reference
Three measurements for each lot were performed:
Lot No. |
Measurement 1 |
Measurement 2 |
Measurement 3 |
Mean value |
Lot 20691 dd. 17.09.2007 |
1.2338 g/cm3 |
1.2337 g/cm3 |
1.2337 g/cm3 |
1.2337 g/cm3 |
Lot 20858 dd. 01.10.2007 |
1.2338 g/cm3 |
1.2337 g/cm3 |
1.2337 g/cm3 |
1.2337 g/cm3 |
Lot 21107 dd. 25.10.2007 |
1.2337 g/cm3 |
1.2339 g/cm3 |
1.2339 g/cm3 |
1.2339 g/cm3 |
The measured relative density of all testmaterial samples differs lower than 0.001%. Compared to the found deviation of the value for the water calibration these findings are considered as acceptable.
The determined relative density for the testmaterial ammonium thioglycolate 71% (ATG 71) is 1.2338 +/- 0.0001 at 293.15 K (20°C).
Description of key information
Relative density: 1.23 at 20°C (OECD method 109)
Key value for chemical safety assessment
- Relative density at 20C:
- 1.23
Additional information
The aqueous solution of 71% ammonium thioglycolate in water has been determined to have relatvie density of 1.2338 +/-0.0001 at 20°C (293.15 K) by using OECD method 109 and EU method A1.
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