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EC number: 271-085-1
CAS number: 68515-43-5
NOEC - 0.56 mg/L
The phthalate esters are1,2-benzenedicarboxylic acids with side
chain esters ranging in carbon chain length from C1 to C13.The US EPA
High Production Volume (HPV) chemical challenge program has proposed
grouping phthalate esters into a single category, divided into 3
sub-categories, this based on the structural similarities of the
substances and theirphysicochemical and toxicological properties. These
sub-categories are: low molecular weight phthalates, transitional
phthalates, and high molecular weight phthalates. The high molecular
weight phthalates are defined as being produced from alcohols with
straight-chain carbon backbones of >C7 or a ring structure. These
include varying mixed isomers of linear and branched diheptyl, dioctyl,
dinonyl, didecyl, diundecyl and ditridecyl phthalate. All have low
solubility in water and are regarded as being too insoluble to exhibit
acute or chronic toxicity. Read-across from closely related phthalates
thus appears reasonable.
Long-term toxicity to Daphnia magna of di-n-nonyl/n-undecyl phthalate
(L9 -11P) has been investigated in accordance with OECD test guidelines.
The no observed effect concentration (NOEC) was determined to be 0.56
In a 21-day test with a phthalate ester with C11 chain length, no
adverse effect on the reproduction of Daphnia magna were apparent when
compared with the test medium control or dispersion control. The NOEC
was estimated to be 1.0 mg/L. A second study reported a NOEC for
survival and reproduction of daphnids as 0.059 mg/L, comparable to the
survival & reproduction of daphnids in control group(s).
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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