Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

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.