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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
PNEC aqua (freshwater)
PNEC value:
22 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
18.2 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
4.4 µg/L
Assessment factor:
50
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
2.29 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
0.32 mg/kg sediment dw
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
32 µg/kg sediment dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
320 µg/kg soil dw
Assessment factor:
100
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Three long-term results from daphnia, fish and algae are available and the lowest value was 0.22 mg/L chromium trinitrate. In addition a long term study on marine invertebrate species is available as well as a study on terrestrial/sediment organisms using earthworms, exposed for 12 weeks. Accordingly, all PNECs are derived by the assessment method in line with ECHA guidance Part R.10. No PNEC for air was derived due to lack of exposure as chromium trinitrate is a crystalline solid with negligible vapour pressure. The PNEC for sewage treatment plant is based on a toxicity test on microorganisms which resulted in an IC50 of 228.8 mg/l when exposed for 9 hours.

The bioaccumulation of the test substance is very low, thus the hazard of secondary poisoning is expected to be very low.

Conclusion on classification

Chromium trinitrate is well soluble in water and shows no acute toxicity towards algae, fish or daphnia at 1 mg/L and below (lowest EC50 is towards algae being 1.82 mg/L). Thus, the substance is not classifiable for acute aquatic toxicity according to CLP in line with the Guidance on the Application of the CLP Criteria, Annex IV. Given that chromium trinitrate forms stable aqueous solutions (it is stored, transported and distributed in aqueous solution) and the lowest NOEC value derived from chronic aquatic toxicity tests is 0.22 mg/L in fish, chromium trinitrate is classifiable as Chronic 2 for aquatic toxicity according to the Guidance on the Application of the CLP Criteria, Annex IV and CLP (Regulation EC No 1272/2008). Accordingly, according to DSD (Directive 67/548/EEC) the substance is classifies as N, R51/53.