KERB 50W SELECTIVE HERBICIDE
Flammability | 1 | |
Toxicity | 1 | |
Body Contact | 1 | |
Reactivity | 0 | |
Chronic | 2 | |
SCALE: Min/Nil=0 Low=1 Moderate=2 High=3 Extreme=4 |
Concentrate material is measured and mixed, preferably outdoors, in proportions as
recommended by manufacturer. DO NOT use until supplied directions for use have been read
and understood. Wettable powder selective herbicide for control of certain broadleaf weeds
grasses in sports turf, lawns; legume seed crops and pastures.
"Rohm Kerb 50-W A Herbicide propyzamide Agchem Kerb 50 W.P.", "Rohm Kerb 50-W A Herbicide
propyzamide Agchem Kerb 50 W.P.", "Crop Care Kerb 50-W Agricultural Herbicide wettable
powder", "Crop Care Kerb 50-W Agricultural Herbicide wettable powder"
Limited evidence of a carcinogenic effect.
Harmful: danger of serious damage to health by prolonged exposure through
inhalation.
Very toxic to aquatic organisms, may cause long- term adverse effects in the
aquatic environment.
Although ingestion is not thought to produce harmful effects, the material may still be damaging to the health of the individual following ingestion, especially where pre- existing organ (e.g. liver, kidney) damage is evident. Present definitions of harmful or toxic substances are generally based on doses producing mortality (death) rather than those producing morbidity (disease, ill-health). Gastrointestinal tract discomfort may produce nausea and vomiting. In an occupational setting however, ingestion of insignificant quantities is not thought to be cause for concern. Considered an unlikely route of entry in commercial/industrial environments. Ingestion may result in nausea, abdominal irritation, pain and diarrhea.
Although the material is not thought to be an irritant, direct contact with the eye may produce transient discomfort characterized by tearing or conjunctival redness (as with windburn).
The material is not thought to produce adverse health effects or skin irritation following contact (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable gloves be used in an occupational setting.
The material is not thought to produce adverse health effects or irritation of the respiratory tract (as classified using animal models). Nevertheless, good hygiene practice requires that exposure be kept to a minimum and that suitable control measures be used in an occupational setting. Persons with impaired respiratory function, airway diseases and conditions such as emphysema or chronic bronchitis, may incur further disability if excessive concentrations of particulate are inhaled.
There has been concern that this material can cause cancer or mutations, but there is not enough data to make an assessment.
Principal routes of exposure are usually by inhalation of generated dust, eye contact, skin contact with the material and with the mixed material. As with any chemical product, contact with unprotected bare skin; inhalation of vapor, mist or dust in work place atmosphere; or ingestion in any form, should be avoided by observing good occupational work practice. Crystalline silicas activate the inflammatory response of white blood cells after they injure the lung epithelium. Chronic exposure to crystalline silicas reduce lung capacity and predispose to chest infections. A large part of the crystals accumulates in the lungs. Silicosis can occur, a condition where irreversible scarring of the lung occurs. Symptoms do not appear until months to years after exposure. Smoking increases this risk. Most simple cases of silicosis do not produce symptoms, but they can progress and eventually cause a tuberculosis-like syndrome which can be fatal. When silicosis is advanced, there is an increased risk of lung cancer and lymphoma. Laws in some areas require those exposed to silica to be under health surveillance.