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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Description of key information

The acute toxicity (oral) for Reactive Blue 181 was assessed in a weight-of-evidence approach containing three studies (rat, oral, gavage). The following LD50 values were determined:

- LD50 (male, female) > 5000 mg/kg bw

- LD50 (male) > 5000 mg/kg bw

- LD50 (male) > 5000 mg/kg bw; LD50 (female) = 4170 mg/kg bw

It can be concluded that Reactive Blue 181 is not acutely toxic via oral exposure.

Key value for chemical safety assessment

Acute toxicity: via oral route

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed
Quality of whole database:
Weight-of-evidence approach with three studies performed with test items of different purity. No adverse effects observed.

Acute toxicity: via inhalation route

Endpoint conclusion
Endpoint conclusion:
no study available

Acute toxicity: via dermal route

Endpoint conclusion
Endpoint conclusion:
no study available

Additional information

Justification for classification or non-classification

The LD50s determined in three acute oral toxicity studies (rat, gavage) were >2000 mg/kg bw which is the cut-off value for classification.