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EC number: 232-350-7
CAS number: 8006-64-2
Any of the volatile predominately terpenic fractions or distillates resulting from the solvent extraction of, gum collection from, or pulping of softwoods. Composed primarily of the C10H16 terpene hydrocarbons: α-pinene, β-pinene, limonene, 3-carene, camphene. May contain other acyclic, monocyclic, or bicyclic terpenes, oxygenated terpenes, and anethole. Exact composition varies with refining methods and the age, location, and species of the softwood source.
Sample solution concentratrion:
Concentrations obtained from the
calibration curve are shown in table 1:
Table 1: Sample Solution Concentration
TOC Concentration (mg/l)
Mean sample solution concentration = 0.307 g/l
Calibration Factor (f):
The readings, temperatures and the
corresponding calibration factors for reverse osmosis water are shown in
the table 2:
Table 2: Reverse Osmosis calibration factor
Literature value (mN/m)
Mean Calibration Factor = 1.001
Sample Solution readings:
The readings, times and temperatures for the
sample solution are shown in table 3:
Table 3: Sample solution readings
Mean Reading 54.7
Surface Tension reading
X calibration factor
± 0.5 °C
pH of sample solution 6.51
Surface Tension: 54.8 mN/m (OECD 115), surface active
An aqueous solution surface tension value of 54.8 mN/m at 21°C has been
determined for TOPP in a GLP study according to OECD 115. TOPP is
considered to be weakly surface active.
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