UNIMIN GLASS GRADE FELDSPAR*****OBSOLETE*****
Flammability | 0 | |
Toxicity | 1 | |
Body Contact | 0 | |
Reactivity | 0 | |
Chronic | 0 | |
SCALE: Min/Nil=0 Low=1 Moderate=2 High=3 Extreme=4 |
Glassmaking, porcelain, ceramics, sanitary ware, electrical insulators also as filler in
paints, adhesives. Mild abrasive in scouring powders, cleaners.
Harmful: danger of serious damage to health by prolonged exposure through
inhalation.
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.
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. and may cause drying of the skin. if exposure is prolonged.
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. Inhalation of dust may aggravate a pre-existing respiratory condition such as asthma, bronchitis, emphysema.
Principal routes of exposure are usually by. inhalation of generated dust and skin contact with the material. Long term exposure to high dust concentrations may cause changes in lung function i.e. pneumoconiosis; caused by particles less than 0.5 micron penetrating and remaining in the lung. Prime symptom is breathlessness; lung shadows show on X-ray. Chronic symptoms produced by crystalline silicas include decreased vital lung capacity and chest infections. Lengthy exposure may cause silicosis which is a disabling form of lung inflammation. Symptoms may appear 8-18 months after initial exposure and smokers are at increased risk.