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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Endpoint summary

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Administrative data

Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available
Additional information:
Migrated from Short description of key information:
According to the existing operating experience H2S does not produce a skin sensitisation.

Justification for selection of skin sensitisation endpoint:
Hydrogen sulphide is a gas which is naturally naturally arising from the earth, produced by degradation of organic material or produced by industrial processes. In industry long lasting operating experience exists with this gas. According to this experience some acute and subacute intoxication were observed but no relevant sensitisation was recorded. According to the existing operating experience H2S is not a skin sensitizer (Begründung zu Kohlenstoffdisulfid in TRGS 900, BAUA, 022009).

Respiratory sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available
Additional information:
Migrated from Short description of key information:
According to the existing operations experience H2S does not produce a respiratory sensitisation.

Justification for selection of respiratory sensitisation endpoint:
Hydrogen sulphide is a gas which is naturally naturally arising from the earth, produced by degradation of organic material or produced by industrial processes. In industry long lasting operating experience exists with this gas. According to this experience some acute and subacute intoxication were observed but no relevant sensitisation was recorded. According to the existing operating experience H2S does not produce arespiratory sensitisation (Begründung zu Kohlenstoffdisulfid in TRGS 900, BAUA, 022009).

Justification for classification or non-classification

No sensitizing properties. Therefore, the substance does not need to be classified with regard to sensitisation according to CLP and DSD.