350P ELECTRIC REFRACTORY, POWDER

SECTION 2: Hazards identification

HMIS® ratings

Health 1 Flammability 0

Physical hazards

0 Personal protection E

Potential chronic health

The adverse health effects-- silicosis, lung cancer, autoimmune and chronic kidney diseases, tuberculosis, and non-malignant respiratory diseases-- are chronic effects. Lung Cancer- Crystalline Silica (Quartz) inhaled from occupational sources is classified as carcinogenic to humans. Tuberculosis- Silicosis increases the risk of tuberculosis Autoimmune and Chronic Kidney Diseases- Some studies show excess numbers of cases of scleroderma, connective tissue disorders, lupus, rheumatoid arthritis, chronic kidney diseases and end stage kidney disease in workers exposed to respirable crystalline silica. Non-Malignant Respiratory Diseases (other than silicosis)- Some studies show an increased incidence in chronic bronchitis and emphysema in workers exposed to respirable crystalline silica. ·THRESHOLD LIMIT VALUE: SiO2 - 0.1 mg/m³; F‾ - 2.5mg/m³ ·EFFECTS OF OVEREXPOSURE: Since this product is a mixture, there is no exposure limit established for it. Hazardous components and their associated permissible exposure limits are listed in the section titled 'Composition and Data on Components'. Specific health hazards from the various ingredients include relevant symptoms: irritation to eyes, nose, throat, respiratory system, and skin areas. ·ACUTE: Inorganic fluorides are highly irritating and toxic. May cause irritation to respiratory tract, skin, and eyes. Large doses can cause nausea, vomiting, and diarrhea. Circulatory, respiratory complaints, and skin rashes may occur. Respiratory diseases including asthma and emphysema may be aggravated. ·CHRONIC: Exposure to fluorides over years may produce an embrittlement and densification of bones, and increase calcification of ligaments. Repeated inhalation of respirable free silica dust may cause delayed lung injury (silicosis).