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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to terrestrial plants

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with REACH Annex XI, the study does not need to be conducted as in water sodium carbonate is dissociated into sodium and carbonate ions and both ions will not adsorb on particulate matter. Therefore, direct and indirect exposure of the soil compartment, via the use of sludge of an STP, is unlikely. Furthermore, it should be realised that sodium carbonate is naturally present in soil and toxicity for terrestrial plants is expected to be low.

Few reliable studies are available exposing different species of plants to Na2CO3. Overall, the different authors expose the plants via water irrigation or using and hydroponics system, growing plants in a water based nutrient rich solution, hence all available data are express in terms of mg/L rather than mg/kg soil. Here is presented a summary table of the results:

Time exposure


Concentration range exposure

Effective concentration

Based on


10 weeks

seeds of sorghum, Sorghum bicolor


LOEC 6359 mg/l


Sial et al., (2019)

14 days

seedlings of rice, Oryza sativa

5-20 mM

LOEC 530 mg/l


Bu et al., (2012)

14 days

seedlings of rice, Oryza sativa

5-20 mM

LOEC 530 mg/l


Li et al., (2017)

7 days

seeds of the bitter vetch, Vicia ervilia

5 -25 mM

LOEC 1060 mg/l

Germination rate

Seperhri et al., (2016)

Key value for chemical safety assessment

Additional information