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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Weight of evidence approach for short term toxicity tests to plants

Key value for chemical safety assessment

Additional information

Though there are no guideline conform studies available for plant toxicity tests, results of various literature studies, as given in this chapter, markedly show, that Propan-1 -ol shows no toxic or harmful effects below concentrations of 100 mg/L. This is underlined by observations with other strucurally related alcohols such as: 1 -Butanol (see EHC 65 and OECD SIDS Butan-1 -ol, CAS: 71-36-3) or 2 -Propanol (see OECD SIDS 2 -Propanol CAS: 67 -63 -0). We therefore suggest, that in light of these observations, a weight of evidence approach for short term toxicity to plants may be applied.

In Annex X of the Regulation (EC) No 1907/2006 REACH concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), it is suggested, that "in the absence of toxicity data for soil organisms, the equilibrium partitioning method may be applied to assess the hazard to soil organisms. The choice of the appropriate tests depends on the outcome of the chemical safety assessment. In particular for substances that have a high potential to adsorb to soil or that are very persistent, the registrant shall consider long-term toxicity testing instead of short-term.These studies do not need to be conducted if direct and indirect exposure of the soil compartment is unlikely."

The substance however, exhibits low potential for adsorption, is not bioaccumulative and readily biodegradable. Furthermore, results of aquatic tests revealed no harmful effects of Propan-1 -ol, and by thereby suggesting little hazardous potential towards soil organisms.

For deriving a PNECsoil the guidance for the implementation of REACH, Chapter 10 states: “when only one test result with soil organisms is available the risk assessment is performed both on the basis of this result using assessment factors and on the basis of the equilibrium partition method (EPM). From both PECsoil/PNECsoil ratios the highest one is chosen for the risk characterisation.” Taking the EC50 concentration of Reynolds (1977) into account a PNECsoil of 2.25 mg/kg soil d.w. (assessment factor 1000) can be derived. In contrast using the equilibrium partitioning method a PNECsoil of 2.2 mg/kg soil d.w. can be derived. Since the results are similar for both assessments, the risk assessment will be performed using the derivation of EPM.