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EC number: 202-045-3 | CAS number: 91-16-7
- 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
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 26 april 2012 to 12 october 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study, OECD 104 compliant.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- 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
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- 11 april 2011
- Type of method:
- static method
Test material
- Reference substance name:
- Veratrole
- EC Number:
- 202-045-3
- EC Name:
- Veratrole
- Cas Number:
- 91-16-7
- Molecular formula:
- C8H10O2
- IUPAC Name:
- 1,2-dimethoxybenzene
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 73 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 96 Pa
Any other information on results incl. tables
Measurement Values Vapour Pressure Determination
1. Determination |
2. Determination |
||
Temp. in °C |
Pressure in mbar |
Temp. in °C |
Pressure in mbar |
20.0 |
0.8 |
54.7 |
4.2 |
30.2 |
1.2 |
45.6 |
2.8 |
40.3 |
2.1 |
35.6 |
1.7 |
50.0 |
3.3 |
24.9 |
1.0 |
62.0 |
5.8 |
14.6 |
0.5 |
From the measured values for the increasing and for the decreasing temperature, log P (in log Pa) and 1/T (in 1/K) were calculated. The measured and the calculated values were plotted (p against T and log P against 1/T).
The regression curve with slope B. intercept A and correlation r was calculated (graph log P vs. 1/T). From the values of these parameters, vapour pressures at 20.0 and at 25.0 °C were calculated using the following equation:
logP = B*(1/T)+A => P(20°C)= 10E(B*(1/293.15)+A) and P(25°C)= 10E(B*(1/298.15)+A)
The calculation results are presented in the following table:
Calculated values for 1/T and log (P)
n |
Temperature T |
Pressure P |
Temperature T |
1/T |
log P |
|
°C |
mbar = hPa |
K |
1/K |
log Pa |
1 |
20.0 |
0.8 |
293.15 |
0.00341122 |
1.9031 |
2 |
30.2 |
1.2 |
303.35 |
0.00329652 |
2.0792 |
3 |
40.3 |
2.1 |
313.45 |
0.00319030 |
2.3222 |
4 |
50.0 |
3.3 |
323.15 |
0.00309454 |
2.5185 |
5 |
62.0 |
5.8 |
335.15 |
0.00298374 |
2.7634 |
6 |
54.7 |
4.2 |
327.85 |
0.00305018 |
2.6232 |
7 |
45.6 |
2.8 |
318.75 |
0.00313725 |
2.4472 |
8 |
35.6 |
1.7 |
308.75 |
0.00323887 |
2.2304 |
9 |
24.9 |
1.0 |
298.05 |
0.00335514 |
2.0000 |
10 |
14.6 |
0.5 |
287.75 |
0.00347524 |
1.6990 |
Calculated Values for vapour pressure
Parameter |
Value |
Unit |
Vapour Pressure (20 °C) |
73 |
Pa |
Vapour Pressure (25 °C) |
96 |
Pa |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of Veratrole was 73 Pa at 20°C and 96 Pa at 25°C.
- Executive summary:
In a study (Henke W, 2012), the vapour pressure of Veratrole was determined using the static method and following the OECD guideline 104, under GLP conditions.
The vapour pressure of Veratrole was 73 Pa at 20°C and 96 Pa at 25°C, showing a low volatility.
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