Fibrous glass

Agent Name
Fibrous glass
CAS Number
65997-17-3
Formula
Varies
Major Category
Mineral Dusts
Synonyms
Fiber glas; Fiberglass; Glass fibers; Glass wool;
Category
Synthetic Vitreous Fibers
Sources/Uses
Usually produced from borosilicate and low-alkali silicate glasses; [NIOSH] 1) continuous filament fibers used in textiles and plastics, or 2) wool-type fibers used in acoustic panels, air ducts, and insulation;
Comments
Insulation glass wool is not classifiable as to carcinogenicity to humans. [IARC] Glass filaments and glass wool are regulated by OSHA as nuisance dusts. Fibrous glass dust causes skin irritation. Reviewed by ACGIH in 1999 as "Synthetic vitreous fibers." See "Synthetic vitreous fibers."
Biomedical References

Exposure Assessment

Skin Designation (ACGIH)
No
TLV (ACGIH)
5 mg/m3, inhal. Fraction (continuous filament glass fiber), 1 respir. fiber/cc(glass wool and special purpose glass fibers)

Adverse Effects

NTP Carcinogen
Anticipated human carcinogen

Diseases, Processes, and Activities Linked to This Agent