Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

OFPMA is a colourless liquid at 20°C and 1013 hPa. The following physical-chemical results were obtained at standard atmospheric pressure and temperature following guideline methods:

  • melting point: -80°C (EU Method A.1 and ASTM D 1177-12);
  • relative density: 1.425 g/cm³ (1.424 – 1.425 g/cm³) (pycnometer method of EU Method A.3 and ASTM D 153-84);
  • n-octanol/water partition coefficient: Log Pow 3.03 ± 0.27 (OECD Guideline 117);
  • water solubility: 30 mg/L (shake flask method of EU method A.6);
  • flash point: 75°C (PMCC method of ASTM D93); and
  • autoignition temperature: 408°C (ASTM E659).

The boiling point of OFPMA was determined following a non-guideline distillation method and was reported to be 180.5°C at standard atmospheric pressure. The vapour pressure of OFPMA was determined following a non-guideline vapour-liquid equilibrium method similar to the static method. The measured values were corrected using the residual pressure recorded at absolute zero; however, in theory, the pressure would increase with temperature. This deviation is not anticipated to have a significant effect on reported value. The vapour pressure of OFPMA is approximately 1241 Pa at 25.5°C.

It is technically not feasible to conduct the flammable solids and flammable gases studies because the substance is a liquid.

It is scientifically not necessary to conduct the following studies:

  • particle size distribution: the substance is marketed or used in a non-solid or granular form (i.e., the substance is a liquid);
  • surface tension: surface activity is not a desired property of the material;
  • substances/mixtures which in contact with water emit flammable gases: experience in production or handling shows that the substance does not react with water;
  • pyrophoric liquids: the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied;
  • explosiveness: there are no chemical groups present in the molecule which are associated with explosive properties; and
  • oxidising liquids: there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied.

Additional information