Butachlor is a herbicide used for pre-emergence control of annual grasses and some broad-leaved weeds. It has a low aqueous solubility and a low volatility. Depending on local conditions it may be moderately persistent in some soils. It is not expected to leach to grpundwater. It is moderately toxic to most fauna and flora, the main exception being honeybeesfor which butachlor has a low toxicity. It has a moderate oral mammalian toxicity if ingested and is both a skin and eye irritant