Registration Dossier
Registration Dossier
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EC number: 215-676-4 | CAS number: 1341-49-7
Endpoint summary
Administrative data
Description of key information
Ammonium hydrogendifluoride is listed on Annex I of Directive 67/548/EEC with classification as Corrosive (R34) 'Causes burns'. Further testing for the irritant and corrosive effects of this substance is therefore not required and cannot be justified either scientifically or on animal welfare grounds.
Key value for chemical safety assessment
Skin irritation / corrosion
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (corrosive)
Eye irritation
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (irritating)
Additional information
No data are available: waivers are proposed for skin irritation and eye irritation endpoints based on the existing R34 classification of the substance. The substance dissolves readily in aqueous (i.e. physiological) environments to produce hydrofluoric acid which is likely to be responsible for the corrosive effects.
Effects on skin irritation/corrosion: corrosive
Effects on eye irritation: highly irritating
Justification for classification or non-classification
Ammonium hydrogendifluoride is listed on Annex I of Directive 67/548/EEC with classification as Corrosive (R34) 'Causes burns'. No change to the existing classification is proposed.
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.
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