Accumulation of the individual distillates, however, was generally reduced when a second distillate was present, resulting in lower body burden. Hypothetically, their asymmetrical hybridization can be modified by some external factors. Other release to the environment of this substance is likely to occur from: outdoor use and indoor use e. Operations which are necessary for the handling of a substance on its own in the manufacturing for export or placing on the EU market are considered to be part of the manufacturing stage e.
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Accumulation of the individual distillates, however, was generally reduced when a second distillate was present, resulting in lower body burden. This is thought to be due to the presence of a nonaqueous-phase liquid at the soil concentrations used.
- Она быстро огляделась .
- Размером и формой он напоминал небольшую сигару двенадцати-пятнадцати сантиметров длиной и около двух сантиметров в диаметре.
On a tissue concentration basis, toxicity was closer to additive. The results demonstrate that tissue concentrations are the preferred metric for toxicity for earthworms.
They also demonstrate that the Canada-wide soil standards based on individual distillates are likely protective. During the present investigation fertile hybrids of Ea and Ef were detected.
- Они покинули заросшую цветами область, вновь вокруг были джунгли и непрекращающийся гомон животных.
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The use information is displayed per relevant life cycle stage of the substance. Manufacture stage includes processes by which the substance is manufactured from raw materials. Operations which are necessary for the handling of a substance on its own in the manufacturing for export or placing on the EU market are considered to be part of the manufacturing stage e. If a substance is directly exported after manufacture, all activities with the substance will be reported under this stage.
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Formulation or re-packing stage corresponds to specific activities meant to produce a mixture to be placed on the market. This means that during formulation, the substance is transferred and mixed with other substances.
It corresponds to activities taking place at industrial sites. This stage also includes chemical distributorsâ activities such as repacking which involves transfer of the substance.
End-use stage means the use of a substance as such or in a mixture by professional workers widespread usesby consumers or at industrial sitesa last step before the end-of-life of the substance, namely before the substance is consumed in a process by reaction during use including intermediate useis emitted to waste streams or the environment or is included into an article.
Article service life stage means the period of time a substance incorporated into an article remains in service or in use.
This also includes processing of semi-finished articles by workers with the aim of producing finished articles or repair and maintenance work like for example sanding of surfaces. Use Descriptors The chemical product category PC describes the types of chemical products in which the substance is finally contained when it is supplied to end-users by industrial, professional or consumer users. Examples include hydraulic fluids, perfumes and air care products.
This category also describes uses as intermediate and under controlled conditions.
For more information on total tonnage band calculation please consult the Data submission manual. Additionally, if available, information on the use of the substance and how consumers and workers are likely to be exposed to it can also be displayed here. The information is aggregated from REACH registered dossiers provided by industry through a use descriptor system based on five separate descriptor lists which in combination with each other form a brief description of use and exposure for certain life cycle stage. The use information is displayed per relevant life cycle stage of the substance.
The sector of use category SU describes in which sector of the economy the substance is used. The process category PROC describes the application techniques or process types defined from the occupational perspective e.
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Industrial spraying, use in closed batch process synthesis and formulation. The environmental release category ERC describes the broad conditions of use from the perspective of release to the environment e.
However, previous work has demonstrated less-than-additive toxicity with PHC distillates and earthworms. A study was initiated to investigate this through toxicity and toxicokinetic studies with the earthworm Eisenia andrei. In the toxicity study, clean soil was spiked with equitoxic combinations of the two distillates ranging from 0. In the toxicokinetic study, a binary combination consisting of one concentration of each distillate was used.
The article category AC describes the type of article into which the substance has eventually been processed. This also includes mixtures in their dried or cured form e.
Precautionary measures and safe use This section provides information on the recommended measures to minimise or prevent adverse effects resulting from exposure to a hazardous product, or improper storage or handling of a hazardous product.
The recommendations are based on the precautionary statements provided in REACH registration dossiers.
If information on guidance on safe use is available in REACH registered dossiers, a link is displayed. Information in the guidance on safe use section consists of recommendations by a substance registrant s on the proper use of the substance in various situations.
Examples include recommended measures on fire-fighting, transport, recycling and disposal. For a detailed overview on identified uses and environmental releases, please consult the detailed information from the registration dossiers. Precautionary measures and guidance on safe use concern the use and handling of the specific substance, not of the presence of the substance in other articles or mixtures.