Registration Dossier
Registration Dossier
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EC number: 231-639-5 | CAS number: 7664-93-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Sulphuric acid is a strong mineral acid that dissociates readily in water to hydrogen ions and sulphate ions (at environmentally relevant pH) totally dissociates and and is totally miscible with water. The hydrogen ions, although not degraded as such due to their elemental nature, contribute to the pH of the local environment. The sulphate ions are incorporated into the various mineral species present in the environment. The total dissociation of sulphuric acid at environmental pH implies that it will not, per se, adsorb onto particulates or accumulate in living tissues.
Conclusion on classification
Sulphuric acid is listed on Annex VI of (EC) No 1272/2008 (CLP) i.e it has a harmonised classification. It has no classification for environmental effects. No change to this classification is proposed based on the information presented in this dossier.
All acute L(E)C50 values are far in excess of 1 mg/L and as such classification for acute toxicity is not required under CLP. No chronic effects in the environment are expected from sulphuric acid. Sulphuric acid is a strong mineral acid that will dissociate rapidly in the environment. Acute effects from sulphuric acid may be expected due to pH change, but chronic effects in the environment are not expected as the natural buffering capacity of surface waters will prevent long term pH changes from occurring. As such, chronic classification is not required for sulphuric acid.
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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