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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for terrestrial plants:
1 555 mg/kg soil dw

Additional information

Studies on methanol toxicity to 3 species of terrestrial plants (2 monocots: Hordeum vulgare and Elymus lanceolatus and 1 leguminous dicot: Medicago sativa) are available. Endpoints investigated were seed emergence, shoot length and dry mass, root length and dry mass.

Since in the studies only Ec25 values are reported, NOECs for the above mentioned endpoints have been graphically derived from the plots representing the results for the applied soil concentrations.

Medicago sativa (Alfalfa):

NOEC 21 d (seedling emergenge): 20000 mg/kg dw

NOEC 21 d (shoot dry mass): 1555 mg/kg dw

NOEC 21 d (root dry mass): 2592 mg/kg dw

NOEC 21 d (shoot length): 1555 mg/kg dw

NOEC 21 d (root length): 4320 mg/kg dw

Hordeum vulgare (Barley):

NOEC 21 d (seedling emergenge): 12000 mg/kg dw

NOEC 21 d (shoot dry mass): 1555 mg/kg dw

NOEC 21 d (root dry mass): 2592 mg/kg dw

NOEC 21 d (shoot length): 2592 mg/kg dw

NOEC 21 d (root length): 4320 mg/kg dw

Elymus lanceolatus (Northern Wheatgrass):

NOEC 21 d (seedling emergenge): 12000 mg/kg dw

NOEC 21 d (shoot dry mass): 2592 mg/kg dw

NOEC 21 d (root dry mass): 2592 mg/kg dw

NOEC 21 d (shoot length): 2592 mg/kg dw

NOEC 21 d (root length): 7200 mg/kg dw

The lowest NOEC of 1555 mg/kg dw was taken as key value for chemical safety assessment.

Other literature studies, as given in this chapter, markedly show, that methanol shows low toxicity to terrestrial plants 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).