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EC number: 217-886-1 | CAS number: 1999-85-5
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well conducted study under Internal Management System and according to EU and OECD guidelines.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: 4. ISO 1183-3, Plastics – Methods for determining the density of non-cellular plastics – Part 3: Gas pyknometer method, September 1999
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 51913, Testing of carbon materials – Determination of density by gas pycnometer (volumetric) using helium as the measuring gas – Solid materials, May 2001
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- Internal Management System
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 1.184
- Temp.:
- 20 °C
- Remarks on result:
- other: RSD 0.02%
- Conclusions:
- The relative density of α,α,α’,α’-tetramethyl-m-xylene-α,α-diol CAS no.1999-85-5 is 1.184 @ 20 oC.
- Executive summary:
The relative density of α,α,α',α'-tetramethyl-m-xylene-α,α-diol was determined according to DIN 51913 and in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008.
The true density of the samples was determined in duplicate per intake of three dried sample.
Reference
Volatiles of α,α,α’,α’-tetramethyl-m-xylene-α,α-diol
Sample code |
Sample weight (g) |
Sample weight after 24 hr at 40ºC (g) |
Volatiles (% m/m) |
1008570108-1 |
9.0430 |
8.5792 |
5.13 |
1008570108-2 |
8.5904 |
8.1611 |
5.00 |
1008570108-3 |
5.9950 |
5.7098 |
4.76 |
1008570108-4 |
7.3766 |
7.0139 |
4.92 |
|
|
Average |
4.95 |
Control pycnometer
Control sample |
Standard volume (cm3) |
Measured volume (cm3) |
Deviation (%) |
Temperature (ºC) |
St.0 (empty vial) |
0.0000 |
-0.0024 |
- |
20.0 |
Standard 135 |
6.3717 |
6.3716 |
-0.002% |
20.0 |
Remark: The measured volume of st 0 should be within 0.05% of full scale (10 cm3).
The measured volume of the Standard 135 should be within 0.01%.
The true density of the samples was determined in duplicate per intake of dried sample.
True density of α,α,α’,α’-tetramethyl-m-xylene-α,α-diol
Sample code |
Sample weight (g) |
Volume (cm3) |
True density (g/cm3) |
Temperature (ºC) |
1008570108-1 |
3.1187 |
2.6333 |
1.1843 |
20.0 |
2.6339 |
1.1841 |
20.0 |
||
1008570108-2 |
3.3135 |
2.7976 |
1.1844 |
20.0 |
2.7982 |
1.1842 |
20.0 |
||
1008570108-3 |
3.2580 |
2.7508 |
1.1844 |
20.0 |
2.7507 |
1.1844 |
20.0 |
||
1008570108-4 |
3.5341 |
2.9828 |
1.1848 |
20.0 |
2.9834 |
1.1846 |
20.0 |
The relative density (D420), is the ratio of the true densityof a material at a temperature of 20ºC and the density of water at a temperature of 4ºC (density = 0.999975g/cm3). The relative density has no dimension.
Relative density of α,α,α’,α’-tetramethyl-m-xylene-α,α-diol:
Sample / Relative density |
α,α,α’,α’-tetramethyl-m-xylene-α,α-diol Batch No.:1008570108 |
Average |
1.1844 |
St. Dev. |
0.0002 |
RSD (%) |
0.02 |
Description of key information
The relative density of α,α,α’,α’-tetramethyl-m-xylene-α,α-diol is 1.184.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.184
Additional information
This endpoint is supported by 1999-85-5, Density, Han, Zhejiang Chemical Industry Research Institute, 2011, SS:
The density of α,α,α',α'-tetramethyl-m-xylene-α,α'-diol is 1.192 g/cm³ at 20°C.
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