3. PHYSICAL AND CHEMICAL PROPERTIES Appearance at 20°C & 101.3 kPa: Colourless to pale yellow viscous liquid Boiling Point: > 285°C Relative Density: 0.9503 ± 0.5% at 20C Interpolated = 0.30 ± 0.03 Pa at 25C Vapour Pressure: Upper limit = 25 Pa at 25°C Henry’s Law Constant: Using Interpolated VP = 3.41 x 10-2 Pa.m3/mol Using Upper limit VP = 2.84 Pa.m3/mol Solubility: 1.8 g/L at 22.5°C Partition Co-efficient (n-octanol/water): log Pow = 2.53 Hydrolysis as a Function of pH: T1/2 at pH 4.0, 7.0, 9.0 > 1 year Adsorption/Desorption: Not determined Not determined Dissociation Constant: Point: 152°C (closed cup) Flammability Limits: Not determined. The notified chemical is combustible. Autoignition Temperature: 250°C Explosive Properties: Not explosive Reactivity/Stability: Stable 3.1 Comments on Physico-Chemical Properties The vapour pressure (VP) of the notified chemical was determined using the Static Method according to the protocols and guidelines of OECD TG 104: Vapour Pressure Curve. Two series of measurements were performed. The first series of 80 measurements was determined at temperatures of 21.85 and 28.26ºC. During these measurements a continuous decrease in vapour pressure was observed. As a consequence, the sample vessel containing the test substance was evacuated for approximately 2 hours to remove volatile impurities. The second series of 115 measurements was determined at 3 different temperatures (23.74, 30.24 and 36.74ºC). A relatively small drop in vapour pressure was observed during the first 70 measurements taken at 23.74ºC. After the first 70 measurements, measurements were conducted at the 2 higher temperatures and the vapour pressure stabilised, indicating the vapour pressure shows ideal behaviour (RCC NOTOX, 1992).
3. PHYSICAL AND CHEMICAL PROPERTIES Appearance at 20°C & 101.3 kPa: Colourless to pale yellow viscous liquid Boiling Point: > 285°C Relative Density: 0.9503 ± 0.5% at 20C Vapour Pressure: Interpolated = 0.30 ± 0.03 Pa at 25C Upper limit = 25 Pa at 25°C Henry’s Law Constant: Using Interpolated VP = 3.41 x 10-2 Pa.m3/mol Using Upper limit VP = 2.84 Pa.m3/mol Solubility: 1.8 g/L at 22.5°C Partition Co-efficient (n-octanol/water): log Pow = 2.53 Hydrolysis as a Function of pH: T1/2 at pH 4.0, 7.0, 9.0 > 1 year Adsorption/Desorption: Not determined Dissociation Constant: Not determined Point: 152°C (closed cup) Flammability Limits: Not determined. The notified chemical is combustible. Autoignition Temperature: 250°C Explosive Properties: Not explosive Reactivity/Stability: Stable 3.1 Comments on Physico-Chemical Properties The vapour pressure (VP) of the notified chemical was determined using the Static Method according to the protocols and guidelines of OECD TG 104: Vapour Pressure Curve. Two series of measurements were performed. The first series of 80 measurements was determined at temperatures of 21.85 and 28.26ºC. During these measurements a continuous decrease in vapour pressure was observed. As a consequence, the sample vessel containing the test substance was evacuated for approximately 2 hours to remove volatile impurities. The second series of 115 measurements was determined at 3 different temperatures (23.74, 30.24 and 36.74ºC). A relatively small drop in vapour pressure was observed during the first 70 measurements taken at 23.74ºC. After the first 70 measurements, measurements were conducted at the 2 higher temperatures and the vapour pressure stabilised, indicating the vapour pressure shows ideal behaviour (RCC NOTOX, 1992).
NA966FR.docx