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EC number: 500-537-5 | CAS number: 161075-00-9
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- according to guideline
- Guideline:
- other: Solvay Internal Method
- Deviations:
- no
- Principles of method if other than guideline:
- The vapor pressure is read and recorded by a pressure indicator after Galden Low Molecular Weight has been completely degassed. Experimental vapor pressure curves have been identified on the basis of measurements repeated at different temperatures.
A Druck model pressure trasducer was used for the measurements.
Apparatus:
- Chambre furnace mod. HERAEUS thermocontrollable between -40°C and +180°C
- 250cc steel vessel 100 atm
- Vaacum pump EDWARDS
- Pressure transducer Mod. Druck
- Pressure indicator Mod. Druck
- Thermocouple and temperature digital reader
- Degassing tank with coolant and heating.
See the attached scheme for details.
Test System
100cc of Galden Low Molecular Weight are loadead in the degassing tank and connected with the steel vessel. The fluid is heated until boiling point and kept under total reflux for 10 minutes in order to eliminate air. Then 60cc of the test item are loaded in the measuring vessel, kept in the thermostated furnace.
Measurements are performed by adjusting the temperature and reading the relevant pressure. - GLP compliance:
- no
- Type of method:
- isoteniscope
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 221.7 Torr
- Remarks on result:
- other: Batch G76, HT 55
- Temp.:
- 20 °C
- Vapour pressure:
- ca. 111.64 Torr
- Remarks on result:
- other: Batch G30, HT 70
- Conclusions:
- The Vapour Pressure of Galden LMW is in the renage between 112 and 222 Torr.
- Executive summary:
A reliable study conducted according an internal method is reported.
The study was conducted in order to determine the vapour pressure of some fluids of the perfluorpolyether GALDEN family. GALDEN LMW was one on the tested fluid.
Measurements were conducted according to an internal method, specifically developed for GALDEN fluids, in order to eliminate inaccuracies due to degassing difficulty of the test item. A pressure trasducer (Druck model) was used for the measurements, experimental vapor pressure curves have been identified on the basis of measurements repeated at different temperatures. Experimental curves are reported in the attachement.
The vapour pressure value at 20 °C were calculated by interpolation.
Two batches of GALDEN LMW were analized, the following value derived:
- Batch G76 (GALDEN HT55): VP = 221,70 Torr at 20 °C
- Batch G30 (GALDEN HT70): VP = 111,64 Torr at 20 °C
Galden LMW is a multi-constituent substance, the Vapour Pressure variability is consistent with the potential difference in concentration of the individual constituents.
In conclusion the Vapour pressure of Galden LMW is between 112 and 222 Torr.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1994
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No details on test method are given, however the data source is authoritative and reliable
- Reason / purpose for cross-reference:
- reference to same study
- GLP compliance:
- no
- Type of method:
- other: not reported
- Temp.:
- 25 °C
- Vapour pressure:
- 165 mm Hg
- Conclusions:
- The reported Vapour Pressure value for GALDEN LMW is 165 mmHg at the temperature of 25 °C.
- Executive summary:
The scope of the publication was to analyse perfluoropolyethers (PFPEs) from the point of view of their intriguing synthetic chemistry, properties, derivates, and applications. The focus of the publication is on PFPE fluids commercially named FOMBLIN and GALDEN and the information gleaned from first-hand experience are reported. FOMBLIN and GALDEN belong to the same class of PFPEs, the main difference between the two families is the molecular weight since GALDEN represents the low molecular weight fraction of FOMBLIN. Both of FOMBLIN and GALDEN are fluids at standard conditions.
In the publication the chemical and physical properties of several commercial products of the GALDEN family are reported. GALDEN LMW, which itself represents the low molecular weight fraction of the GALDEN family is also described with the commercial name of GALDEN HT 70.
The vapour pressure of GALDEN LMW, experimentally determined, is reported to be 165 mmHg at 25 °C.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The source is authoritative and the results are considered reliable.
- Remarks:
- The Author is the Global Technical Marketing Manager of the product.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- other: ASTM D2879
- Deviations:
- yes
- Remarks:
- the fluid is degassed before measuring its vapour pressure.
- Principles of method if other than guideline:
- The method is a modification of ASTM D2879 method by degassing fluid before measuring its vapor pressure.
Repeatability error of this method is within 5%. - GLP compliance:
- no
- Type of method:
- isoteniscope
- Specific details on test material used for the study:
- GALDEN HT55
GALDEN HT70 - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 238 hPa
- Remarks on result:
- other: Tested sub: GALDEN HT55
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 147 hPa
- Remarks on result:
- other: Tested sub: GALDEN HT70
- Conclusions:
- The vapour pressure of GALDEN LMW ranges between 147 and 238 hPa
- Executive summary:
The statement reports the typical values of GALDEN LMW vapour pressure, basing on internal experimental measurements. The used method is an adaptation on ASTM D2879 method.
At 20°C, the value of vapour pressure of Galden® HT55 and Galden® HT70 is the following:
• Galden® HT55 = 179 Torr = 238 hPa
• Galden® HT70 = 111 Torr = 147 hPa
Galden LMW is a multi-contituent substance. The vapour pressure variability is consistent with the difference in
concentration of the individual constituents.
Referenceopen allclose all
Experimental vapor pressure curves have been identified on the basis of measurements repeated at different temperatures.
Curves are reported in the attached file.
The experimental values for the two different batches are reported in the following tables.
The values of vapour pressure at 20 °C are calculated by interpolation.
HT 55 | ||
Temperature ( °C ) |
Pressure (Torr) |
Remarks |
-20,00 | 27,75 | |
-10,00 | 52,13 | |
0,80 | 85,50 | |
9,00 | 136,42 | |
19,00 | 211,12 | |
20,00 | 221,70 | Calculated value |
29,20 | 318,97 | |
39,40 | 464,10 | |
49,00 | 662,77 | |
54,20 | 760,00 |
HT 70 | ||
Temperature ( °C ) |
Pressure (Torr) |
Remarks |
-20,20 | 5,65 | |
-10,20 | 16,80 | |
-0,40 | 35,03 | |
9,40 | 63,90 | |
19,80 | 110,25 | |
20,00 | 111,64 | Calculated value |
29,20 | 175,65 | |
39,20 | 273,00 | |
49,60 | 407,00 | |
59,20 | 579,50 | |
65,20 | 716,47 | |
67,20 | 760,00 | |
The reported values are based on internal historical experimental measurements.
Description of key information
The vapour pressure of Galden LMW ranges between 147 and 296 hPa at temperature of 20 °C depending on difference in concentration of the individual constituents.
The mean value of vapour pressure = 192.5 hPa (20°C) has been set as key value for risk assessment purpose.
Key value for chemical safety assessment
- Vapour pressure:
- 192.5 hPa
- at the temperature of:
- 20 °C
Additional information
Three reliable references are reported.
The key reference reports the typical vapour pressure values for GALDEN LMW basing on historical experimental internal measurements carried out according to the internal method (modified ASTM D2879 method which takes into account adaptations for volatile substances).
The typical values of vapor pressure at 20°C of Galden LMW are the following:
Galden HT55: VP = 238 hPa
Galden HT70: VP = 147 hPa
In the supporting study, two batches of GALDEN LMW (Galden HT55 and Galden HT70) were analyzed and experimental vapor pressure curves were identified on the basis of several measurements at different temperatures. Basing on experimental curves, the following values of vapour pressure were calculated at the temperature of 20°C:
Galden HT55: VP = 296 hPa
Galden HT70: VP = 149 hPa
A further supporting study reports that the vapour pressure of GALDEN LMW (GALDEN HT70) is = 220.0 hPa at 25 °C.
All the reported values are consistent.
Galden LMW is a multi-constituent substance, the vapour pressure variability is consistent with the difference in concentration of the individual constituents and with the experimental error associated to the measures.
The mean value of vapour pressure = 192.5 hPa (20°C) of GALDEN HT55 and GALDEN HT70 from the key reference has been set as key value for risk assessment purpose.
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