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EC number: 908-205-5
CAS number: -
Experimental HLC data are available for two constituents of MTDID 22327.
These two substances are comparable to MTDID 22327 as a whole based on
the types of chemical functional groups (perfluorinated alkyl groups and
perfluorinated amines); molecular weights (MTDID 22327 range = 288 - 421
g/mol; PFHx = 338 g/mol; and PMM =299 g/mol); vapor pressures (MTDID
22327 = 28.4 kPa; PFHx = 24 kPa; and PMM = 29 kPa); and water
solubilities (MTDID 22327 = 0.679 - 758 µg/L; PFHx = 84 ug/L; and PMM =
758 ug/L). The respective dimensionless HLCs of these two substances are
used to define the upper and lower bounds of the dimensionless HLC value
which may be expected for MTDID 22327. A higher range of HLC values may
be expected specifically for perfluorinated tertiary amines.
The Henry’s Law constant (HLC) for MTDID 22327 was determined using a
category approach wherein the experimental HLCs of two constituent
substances with similar physical properties are used to define the upper
and lower bound of the HLC range. The resulting HLC range is 171 – 1021
atm∙m³/mol at 22 °C. This approach is considered reliable based on the
validity of the experimental values provided. Based on the anticipated
HLC range, the test substance is not expected to remain in aqueous
solution in open systems and it will partition to the atmosphere.
The validity of this approach to categorically group these types of
substances was determined to be reliable with restrictions based on the
similarity of chemical functional groups, molecular weights, water
solubilities, and vapor pressures. Since the source data are for
constituents of MTDID 22327, they provide the best estimate of the range
of partition coefficient for MTDID 22327. The source data are from
GLP-compliant studies which used scientifically acceptable methods, and
they are considered reliable. This study is pertinent to the fate of
MTDID 22327 and may be used for risk assessment, classification and
labelling, and PBT analysis.
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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