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EC number: 200-001-8
CAS number: 50-00-0
In accordance with Annex IX of Regulation (EC) No 1907/2006, the equilibrium partitioning method has been used for assessing the hazard to soil organisms.
Reliable studies on the short and long term toxicity of
formaldehyde to plants are available. These studies are reliable,
however they were not performed according to current guidelines and
therefore not been considered for the derivation of PNECsoil. In
accordance with Annex IX of Regulation (EC) No 1907/2006, the
equilibrium partitioning method has been used for assessing the hazard
to soil organisms.
Short term toxicity to plants:
A 5 h exposure to formaldehyde at 0.44 mg/m3 (0.37 ppm) resulted
in a significant reduction in pollen-tube length, whereas a 1 or 2 h
exposure was innocuous. When the formaldehyde concentration was
increased to 2.88 mg/m3 (2.4 ppm), a 1 h exposure caused a decrease in
tube length (Masaru et al., 1976).
The most sensitive effect for terrestrial organisms resulting from
exposure to formaldehyde in air was an increase in the growth of shoots,
but not of roots, of the common bean (Phaseolus vulgaris) after exposure
to average measured concentrations of 78, 128, 239 and 438 μg/m3 in air
(day: 25°C, 40% humidity; night: 14°C, 60% humidity) for 7 hours per
day, 3 days per week, for 4 weeks, beginning at the appearance of the
first macroscopic floral bud, 20 days after emergence (Mutters et al.,
1993). Although the authors concluded that there were no short-term
harmful effects, it has been suggested that an imbalance between shoot
and root growth may increase a plant’s vulnerability to environmental
stresses such as drought, because the root system may not be large
enough to provide water and nutrients for healthy plant growth (Barker &
Long term toxicity to plants:
Effects on plants were also studied following exposure to
formaldehyde in fog water. Seedlings of winter wheat (Triticum
aestivum), aspen (Populus tremuloides), rapeseed (Brassica rapa) and
slash pine (Pinus elliotti) were exposed to formaldehyde concentrations
of 0, 9000 or 27 000 μg/L in fog for 4.5 hours per night, 3 nights per
week, for 40 days. Based on an unspecified Henry’s law constant,
calculated corresponding atmospheric gas-phase formaldehyde
concentrations were 0, 18 and 54 μg/m3, respectively. In rapeseed grown
in the formaldehyde fog, significant (p ≤ 0.1) reductions in leaf area,
leaf dry weight, stem dry weight, flower number and number of mature
siliques (seed pods that produce seed) were observed compared with
control plants. The slash pine showed a significant increase in needle
and stem growth. No effects were observed in the wheat or aspen at test
concentrations (Barker & Shimabuku, 1992).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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