Synthetic Vitreous Fibers


Affected Organ Systems: Ocular (Eyes), Respiratory (From the Nose to the Lungs)

Cancer Classification:  Please contact NTP, IARC, or EPA with questions on cancer and cancer classification.

Chemical Classification: Inorganic substances

Summary: Synthetic vitreous fibers are a group of fibrous, inorganic materials that contain aluminum or calcium silicates, and are made from rock or stone, clay, slag, or glass. They do not occur naturally in the environment, but are widely used for thermal and sound insulating purposes and to reinforce other building materials. There are three categories of synthetic vitreous fibers: 1) glass fibers (fiberglass), including glass wool and continuous filament glass, 2) mineral wool, which contains stone wool and slag wool, and 3) refractory ceramic fibers. Insulation that is used in homes and buildings is composed of synthetic vitreous fibers. Refractory ceramic fibers are not widely used for building insulation. They are used to insulate furnaces, in replacement of asbestos.

Community Members
Community Members

ToxFAQs - Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.

Public Health Statement - Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.

Toxicological and Health Professionals
Toxicological and Health Professionals

Toxicological Profile - Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.

Page last reviewed: February 10, 2021