Benzotriazole

Toxicity to terrestrial plants

Administrative data

Endpoint:

toxicity to terrestrial plants

Type of information:

experimental study planned

Study period:

as soon as possible after ECHAs decision

Materials and methods

Test guideline

Qualifier:

according to

Guideline:

OECD Guideline 208 (Terrestrial Plants Test: Seedling Emergence and Seedling Growth Test)

Test material

Reference

Name:

Unnamed

Type:

Constituent

Type:

Constituent

Applicant's summary and conclusion

Executive summary:

Wu et al. have conducted a series of test with different plants (Pumpkins, Alfalfa, Cottonwood, Corkscrew willow, horseraddish) indicating toxic effects of Benzotriazole on the growth of plants (Wu et al., 1998). In addition, findings in tomato plants (Davis, 1954), cucumber seedlings and bushbean plants (EPA report 1977) has been reported. Lupher et al. have observed adverse effects on sunflowers and fescues (Lupher et al., 1999).

As available information with regard to toxic effects on plants are not adequate for the chemical safety asssessment and the provisional assessment (PNECsoil calculated by EPM) indicates a risk for the soil compartment further tests have to be proposed. Hence, Benzotriazole and Tolyltriazole as well as the conjugated forms show a similar behaviour in the environment the test will be used for the other substances too.

Davis D (1954) Benzotriazole, a plant-growth regulator, Science, 120:989.

Lupher D, Davis LC, Erickson LE (1999) Effect of Benzotriazoles on sunflowers and fescue. Proceedings of the 1999 Conference on Hazardous Waste Research

Wu X, Chou N, Lupher D, & Davis LC (1998). Benzotriazoles: toxicity and degradation.Conference on Hazardous Waste Research(pp. 374–382).