Direct contact may cause irritation by mechanical abrasion. Ingestion of large amounts may cause gastrointestinal irritation and blockage. Dusts may irritate the nose, throat, and respiratory tract by mechanical abrasion. Coughing, sneezing, and shortness of breath may occur following exposures in excess of appropriate exposure limits. Use of natural sand and gravel for construction purposes is not believed to cause additional acute toxic effects.
Acute silicosis is a rapidly progressive, incurable lung disease that is typically fatal.
Contact a physician if irritation persists or later develops. Wash with soap and water. Contact a physician if irritation persists or later develops. Get immediate medical attention. Dust in throat and nasal passages should clear spontaneously.