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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.
Table 1. Test results
Immobilisation at 24 h
Immobilisation at 48 h
Moults at 48 h
Living animals at the surface at 48 h
Table 2. Results of TOC analysis of test media
Table 3. Results of GC-MS analysis of test media
from equation of the calibration line (axis intercept); no signal was
measured in the controls for α-Terpineol, β-Pinene and Limonene
GC-MS-values are based on results and/or limits of detection
A 48h-EL50 value of 6.4 mg/l and NOELR of circa. 1 mg/l have
been determined for the effects of a sample of TOPP on mobility of Daphnia
magna. In tests with two samples of TOPP, containing 0.02% and 3.6%
of sulfur, corresponding EL50 and NOELR values of 8.8 and 2.5
mg/l and 6.8 and 2.5 mg/l were determined for the same endpoint. It is
therefore concluded that all three samples were equally toxic to D. magna.
Data are also available for alpha- and beta-pinene, which are
constituents of block 1 of TOPP. The 48h-EC50 was determined
as 0.48 and 1.25 mg/l respectively.
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