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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 273-258-7 | CAS number: 68955-20-4 This substance is identified by SDA Substance Name: C16-C18 alkyl alcohol sulfuric acid sodium salt and SDA Reporting Number: 19-062-04.
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
flammable as powder (bulk density < 400 g/L)
non flammable as granulate (bulk density > 400 g/L)
no pyrophoricity
no flammability on contact with water
Key value for chemical safety assessment
Additional information
The substance in granulate form is non-flammable as determined in the test according to EU A.10 and in an older supporting test according to UN N.1 and EU A.10. The substance in powder form is flammable and the burning ratio is 2.9 mm/s (EU A.10, with investigation of the wetted zone, which stops the fire) or for two different batches 2.94 or 5.56 mm/s without the wetted zone investigation.
According to the manufacturer's experience, and available experimental evidence on a variety of alkyl sulfates, solid forms of bulk density < 400 g/L are flammable on ignition, whereas solid forms of higher bulk density > 400 g/L are non-flammable. In terms of aggregate state, this corresponds approximately to powders and granulates, respectively.
Based on experience in handling and use and the chemical structure, pyrophoricity and flammability on contact with water are not to be expected.Justification for classification or non-classification
According to Regulation (EC) No 1272/2008 on classification, labelling and packaging (CLP) of substances and mixtures, the substance in powder form (bulk density < 400 g/L) is considered to be a flammable solid, Category 2, because the burning rate exceeds the value of 2.2 mm/s, and the wetted zone stops the fire.
Propagation of burning in tests according to EU method A.10. and UN method N.1 was either not observed or weak in the case of the granulate form (bulk density > 400 g/L).
Based on the chemical structure and experience in handling and use, pyrophoricity and flammability on contact with water are not 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.
