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: 204-694-8
CAS number: 124-28-7
PHOTODEGRATION IN AIR
Direct Photodegradation in Air
Compounds of the DMA category do not absorb light >290 nm (ozone band)
and therefore a direct photolysis in air will not occur.
Indirect Photodegradation in Air
OH radical induced indirect photolysis of substances from the DMA
category can be estimated with US EPA AOPWIN Program, estimating low
degradation half-lives (12 hour day and OH radical concentration of
1500000 radicals/cm3). For C10 DMA and C18 DMA half-lives of 1.42 h and
1.26 h are calculated, respectively.
PHOTODEGRATION IN WATER
Direct Photodegradation in Water
Substances of the DMA category are unlikely to undergo direct
photolytical degradation in the hydrosphere because of the lack of a
Indirect Photodegradation in Water
OH radical induced indirect photolysis in air can be estimated with US
EPA AOPWIN Program estimating low degradation half-lives for the DMA
category (C10 DMA 1.42 h, C18 DMA 1.26 h). Therefore DMA category
members may also be degraded in water by indirect photolysis if
sufficient OH radicals were available. In any case, substances of the
DMA category are rapidly biodegraded (see IUCLID Sections 5.2.1 and
5.2.2) and indirect photolysis will play a minor role in degradation
PHOTODEGRATION IN SOIL
Direct Photodegradation in Soil
Substances from the DMA category do not absorb light >290 nm (ozone
band) and therefore a direct photolysis on soil surface will not occur.
Indirect Photodegradation in Soil
OH radical induced indirect photolysis of DMA category members in air
can be estimated with US EPA AOPWIN Program estimating low degradation
half-lives (see chapter 5.1.1). Therefore substances from the DMA
category may be degraded on soil surface by indirect photolysis but as
the amines are rapidly biodegraded in aerobic soils (see IUCLID Section
5.2.3) indirect photolysis will play a minor role in degradation.
Substances of the DMA category do not have functional groups which can
be hydrolyzed under environmental conditions as stated in OECD Guideline
111. In addition substances of the DMA category are readily
biodegradable. The statement given above fulfils the requirement for
waiving as given in Regulation (EC) 1907/2006 Annex VIII Column 2,
126.96.36.199 which states: The study need not to be conducted if the
substance is readily biodegradable.
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