Health Hazard summary Low toxicity. Use safe work practices to reduce eye or skin contact and dust generation-inhalation. Eye Contact with dust or powder may cause irritation Skin Repeated or prolonged contact may cause irritation Inhalation May irritate the respiratory tract on prolonged or repeat contact and may aggravate pre-existing respiratory conditions. Ingestion Not applicable Carcinogenicity Not applicable Chronic Effects Prolonged breathing of dust may cause lung disease.