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EC number: 248-666-3 | CAS number: 27813-02-1
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- [Directive 92/69/EEC, Official Journal L 383 A 1992]
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- adopted on 27 July 1995
- GLP compliance:
- no
- Type of method:
- dynamic method
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): 2-Hydroxypropylmethacrylat (CAS: 27813-02-1)
Supplier: Röhm GmbH & Co. KG
Purity: 99.05 % (GC, Röhm: M2-9)
Impurities:
PPG-MA: 0.395 % (GC, Röhm: M2-9)
PGDMA: 0.018 % (GC, Röhm: M2-9)
Water: 255 ppm (Karl-Fischer, Röhm: M3)
Inhibitor: HQME 216 ppm (HPLC, Röhm: M1-12) - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.11 hPa
- Remarks on result:
- other: Calculated by mathmatical extrapolation
- Conclusions:
- The vapor pressure was determined to be 0.11 hPa at 20 deg C.
- Executive summary:
The vapour pressure of hydroxypropyl methacrylate was measured by dynamic method acc. OECD 104 and extrapolated to 20 °C. The vapor pressure was calculated to be 0.11 hPa at 20 deg C.
Reference
Up to 120 °C the sample boiled intermittendly, above 160 °C the sample foamed. Measurements after cooling the sample were not possible due to polymerization. Thus only the data points above 120 °C were used for the calculation.
Vapor pressure Boiling temp. Inverse temp.
[hPa] [°C] * 1000
[KE-1]
--------------------------------------------------------
8.2 90.6 2.7491
15.4 99.8 2.6813
31.1 111.7 2.5984
53.4 123.2 2.5230
99.3 137.7 2.4340
202.8 156.3 2.3286
349.9 172.4 2.2444
500.6 183.4 2.1903
753.1 198.5 2.1202
992.1 209.9 2.0702
--------------------------------------------------------
Description of key information
The vapour pressure of HPMA is 0.11 hPa at 20°C (OECD guideline 104/EU test method A.4; dynamic method).
Key value for chemical safety assessment
- Vapour pressure:
- 0.11 hPa
- at the temperature of:
- 20 °C
Additional information
The test result is confirmed by the calculated vapour pressure of hydroxypropyl methacrylate with EPI Suite 4.1. The calculated mean vapour pressure acc. Antoine & Grain method is 0.057 hPa @ 25 °C based on a measured boiling point of 209 °C (Röhm 2007).
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