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Density

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Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline available
Principles of method if other than guideline:
- Principle of test: No information related to the method adopted ore the guideline are available.
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem data.
- Short description of test conditions: not specified
- Parameters analysed / observed: relative density
GLP compliance:
not specified
Other quality assurance:
other: not specified
Remarks:
primary source: COSMETIC, TOILETRY AND FRAGRANCE ASSOCIATION (CTFA). (No date). Submission of unpublished data by CTFA. Cosmetrc ingredient chemical description of pyrogallol.
Type of method:
other: not specified
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: not specified
- Expiration date of the lot/batch: not specified
- Purity test date: not specified

RADIOLABELLING INFORMATION (if applicable)
not applicable

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: not specified
- Stability under test conditions: not specified
- Solubility and stability of the test substance in the solvent/vehicle: not specified
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: not specified

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: not relevant
- Preliminary purification step (if any): not specified
- Final dilution of a dissolved solid, stock liquid or gel: not relevant
- Final preparation of a solid: not relevant

FORM AS APPLIED IN THE TEST (if different from that of starting material)
solid

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable)
not applicable

OTHER SPECIFICS: Pyrogallol consists of a minimum of 99% Pyrogallol.
A UV spectral analysis of chemically pure (99%) Pyrogallol, 0.1% w/v in methanol, showed a single absorbance maximum at 267.5 nm
Dynamic viscosity of test material:
not specified
Key result
Type:
relative density
Density:
1.45 g/cm³
Temp.:
25 °C
Key result
Type:
relative density
Density:
1.5 g/cm³
Temp.:
25 °C
Conclusions:
The density of Pyrogallol was between 1,45-1,50 g/cm3 at 25°C
Executive summary:

The density of pyrogallol is between 1,45-1,50 g/cm3 at 25°C

No information on data or the test method used to measure this endpoint are available in the handbook. However,

the information are taken from a peer reviewed assessment document (primary source: COSMETIC, TOILETRY AND FRAGRANCE ASSOCIATION (CTFA). (No date). Submission of unpublished data by CTFA) and

mentioned in a high quality review so, it can be considered reliable and suitable for use as the key study for this endpoint

Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline available
Principles of method if other than guideline:
- Principle of test: No information related to the method adopted ore the guideline are available.
On the other hand, the use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem data.
- Short description of test conditions: not specified
- Parameters analysed / observed: density
GLP compliance:
not specified
Other quality assurance:
other: not specified
Remarks:
primary source: Lide, D.R. CRC Handbook of Chemistry and Physics 88TH Edition 2007-2008. CRC Press, Taylor & Francis, Boca Raton, FL 2007, p. 3-36
Type of method:
other: not specified
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: not specified
- Expiration date of the lot/batch: not specified
- Purity test date: not specified

RADIOLABELLING INFORMATION (if applicable)
not applicable

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: not specified
- Stability under test conditions: not specified
- Solubility and stability of the test substance in the solvent/vehicle: not specified
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: not specified

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: not relevant
- Preliminary purification step (if any): not specified
- Final dilution of a dissolved solid, stock liquid or gel: not relevant
- Final preparation of a solid: not relevant

FORM AS APPLIED IN THE TEST (if different from that of starting material)
solid

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable)
not applicable

OTHER SPECIFICS: none
Dynamic viscosity of test material:
not specified
Key result
Type:
relative density
Density:
1.453 g/cm³
Temp.:
4 °C
Conclusions:
The density of the substance was 1.453 g/cm3 at 4°C
Executive summary:

The density of pyrogallol is 1.453 g/cm3 at 4°C.

No information on data or the test method used to measure this endpoint are available in the handbook. However, the information are taken from a peer reviewed handbook (primary source: CRC Handbook of Chemistry and Physics 88th Edition) and mentioned in a high quality review so, it can be considered reliable and suitable for use as the key study for this endpoint

Description of key information

Key value for chemical safety assessment

Relative density at 20C:
1.45

Additional information