Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 248-256-4
CAS number: 27138-01-8
Based on the test results, the substance could be considered as
not highly adsorptive, that indicates that soil and sediment are not
expected to be the main target compartments for exposure assessment.
The substance is synthetized then separated by centrifugation at
one manufacturing site. On this site, the substance is directly used for
synthesis of an organic peroxide. Consequently,
a,a,a',a'-tetramethyl-m-xylene-a,a'-diol is not marketed.
However, it should be noted chemicals could reach the soil via
1. Application of sewage sludge in agriculture.
The building where the substance
a,a,a',a'-tetramethylxylene-a,a-diol is manufactured is connected to the
sewage treatment plant based on the manufacturing site. Thus the
substance is treated with other substances in the dedicated sewage
treatment plant. The activated sludge stemmed from the sewage treatment
plant are then extracted. Finally, the sludge are treated as chemical
waste and they. are not spread.
As a consequence, we can conclude that soil is not exposed to the
substance via the application of sewage sludge in agriculture.
2. Direct application of chemicals.
Based on the internal use of the substance, as an intermediate, we
can consider that there is no direct application of the substance on the
3. Deposition from the atmosphere.
Deposition from the atmospheric compartment involves
volatilization, vaporization or direct release of a considered substance
into the atmosphere.
During the manufacture, the transport of the substance is done by
pipe, screw conveyors and gravity.
Indeed, the substance is synthetized then separated by
centrifugation. The transfer to centrifugator is done by closed pipe.
The substance is manufactured, and then used in the synthesis of
an organic peroxide.
Occasionally, the substance can be temporarily stored in big-bags
in the building, the substance is then also conveyed by pipe, screw, or
gravity to process tanks inside the building.
Hence, during these steps, there is no environmental exposure.
The maintenance operations are carried out according to the
operating procedures or instructions established by the management staff
according to the type of intervention to be performed.
The cleaning is done by washing, then the liquid waste are
collected and treated to the waste water treatment plant. And the solid
waste are packed in pails and disposed off.
As result, there is no emission of the substance in soil during
the manufacturing, the storage or the transfer inside the manufacturing
Based on these arguments no exposure of soil is expected.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again