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EC number: 230-525-2 | CAS number: 7173-51-5
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From March 15, 2012 to March 16, 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Key result
- Temp.:
- ca. 20 °C
- Vapour pressure:
- < 0.002 Pa
- Key result
- Temp.:
- ca. 20 °C
- Vapour pressure:
- < 0 mm Hg
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- < 0.006 Pa
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- < 0 mm Hg
- Conclusions:
- Under the conditions of the study, the vapour pressure of test substance was found to be <1.5 × 10(-3) Pa = <1.1 × 10(-5) mm Hg at 20°C and <5.8 × 10(-3) Pa = <4.3 × 10(-5) mm Hg at 25°C.
- Executive summary:
A study was conducted to determine the vapour pressure of DDAC according to the isothermal thermo gravimetric effusion method (OECD Guideline 104, EU method A.4 and US EPA OPPTS 830.7950). Approximately 11.1 or 15.8 mg of the test substance was applied to the surface of a roughened glass plate as a homogeneous layer. The plates were dried at 30°C under nitrogen in the thermogravimetric analyzer (TGA). The weight loss of the test substance was measured continuously as a function of time. Benzo(ghi)perylene, chrysene, hexachlorobenzene, naphthalene and water were used as reference substances for validation. The log Vt, 20 value which was obtained by extrapolation of the evaporation rate curve, fitted in the vapour pressure regression curve. Under the conditions of the study, the vapour pressure of test substance was found to be <1.5 × 10(-3) Pa = <1.1 × 10(-5) mm Hg at 20°C and <5.8 × 10(-3) Pa = <4.3 × 10(-5) mm Hg at 25°C.
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Study period:
- Not applicable
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Remarks:
- Data estimated by mpbpwin v1.43
- Qualifier:
- according to guideline
- Guideline:
- other: REACH guidance on QSARs: Chapter R.6. QSARs and grouping of chemicals
- GLP compliance:
- no
- Type of method:
- other: estimated by calculation
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: Estimated by calculation (Modified Grain Method)
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- ca. 0 Pa
- Remarks on result:
- other: Estimated by calculation (Modified Grain Method, sub-cooled liquid)
- Conclusions:
- The vapour pressure of the test substance was estimated using mpbpwin v1.43 to be in the range of 9.44 10-9 Pa (Modified Grain Method, 25°C) to 4.79 10-7 Pa (Modified Grain method, 25°C, subcooled liquid).
- Executive summary:
The vapour pressure of the test substance was estimated using mpbpwin v1.43 to be in the range of 9.44 10-9 Pa (Modified Grain Method, 25°C) to 4.79 10-7 Pa (Modified Grain method, 25°C, subcooled liquid).
Referenceopen allclose all
Formulas Used:
Evaporation rate: (νT) =Dm/ F x t [g/cm /h]
where:
Dm = weight loss of the test substance [g]
F = surface of the sample plate [cm2]
t = elapsed time for the weight loss [h]
Vapour pressure equation log PT=c lognT+d
where:
c = constant specific for the experimental arrangement
d = constant specific for the experimental arrangement
Vapour pressure regression curve log PT=a 1/T+b
where:
T = temperature [K]
a = slope [K]
b = intercept
Results:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of Didecyldimethylammonium chloride (DDAC). The vapour pressure of the test substance at 20°C (293K) and 25°C (298K) was:
|
20°C |
25°C |
||
[Pa] |
[mmHg] |
[Pa] |
[mmHg] |
|
Test substance |
< 1.5 x 10-3 |
< 1.1 x 10-5 |
< 5.8 x 10-3 |
< 4.3 x 10-5 |
Estimated by calculation
Description of key information
The vapour pressure of the test substance was measured according to the isothermal thermo gravimetric effusion method of OECD Guideline 104, EU Method A.4 and US EPA OPPTS 830.7950 (Brekelmans, 2012).
Key value for chemical safety assessment
- Vapour pressure:
- 0.006 Pa
- at the temperature of:
- 25 °C
Additional information
- The vapour pressure was found to be <1.5 × 10-3 Pa (i.e. <1.1 × 10-5 mm Hg) at 20°C and <5.8 × 10-3 Pa (i.e. <4.3 × 10-5 mm Hg) at 25°C.
- Data presented in the DDAC assessment report for Product Type 8 conducted under Directive 98/8/EC (evaluating Competent Authority: Italy, June 2015, attached in Section 13 of the IUCLID dataset) reported an additional vapour pressure study with VP values of 5.9E-06, 1.1E-05 and 2.3E-04 at 20, 25 and 50ºC respectively (US ISC).
As a conservative approach, the relatively higher vapour pressure value <5.8 × 10-3 Pa at 25°C of the purified form of the registered substance has been considered further for hazard/risk assessment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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