Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 500-078-0 | CAS number: 31923-84-9 1 - 4.5 moles propoxylated
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Toxicity to microorganisms is determined to give a 3 h-EC50 > 10.000 mg/L (Bayer, 2002 and Bayer, 2003).
Key value for chemical safety assessment
Additional information
Hypothesis for the read-across approach:
Group: Succhrose, propoxylated; Propylidynetrimethanol, propoxylated; Glycerol, propoxylated; D‑Glucitol, propoxylated; Propane-1,2-diol, propoxylated; Pentaerythritol, propoxylated; 2,2',2''‑Nitrilotriethanol, propoxylated; Trimethylolpropane, ethoxylated; Diethylene glycol, propoxylated; Ethylene glycol, propoxylated; Diethanolamine, propoxylated.
The substance is member of a group of chemicals with similar chemical structure and physical behaviour:
1.) Chemical similarity: All of these substances have terminal OH-groups and ether-linkages as common structural features. Thus, the substances differ from each other only in the identity/type of starter molecule (aliphatic alcohols with 2 to 8 hydroxy functions) used and its associated bonding with the alkoxylate repeating units. Typically the products are substances with a range of Ethyleneoxide or Propyleneoxide units (1 -12.5) added to starter molecules. All substances are characterised by a molecular weight distribution of ca. 150 - 1000. The common function of the members of the group is to allocate a high number of hydroxy functions which are intended to react with e. g. an isocyanate.
2.) Physical behaviour: All members of the group are liquids with elevated viscosity, high solubility in water (> 100 g/L) and a low vapour pressure (<10E-04 hPa).
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.
