SYNTHETIC VITREOUS FIBERS (CONTINUOUS FILAMENT GLASS FIBERS)†

Chemical Identification
Chemical Identification
CAS # NO CAS
Formula

Various

Synonyms

manmade mineral fibers; rock wool; slag wool; synthetic vitreous fibers

Physical Properties
Physical Properties
Physical description
Boiling point Molecular weight varies
Freezing point/melting point Vapor pressure 0 mmHg (approx)
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 9135 (total), 9130 (respirable - not recommended) 1300
Sampling group
Sampler/Sampling media Mixed cellulose ester filter (MCEF) 0.8 microns (25 mm), with electrically conductive 50 mm extension cowl [GCS25080]
Sampling time*

30-480 min (120 min recommended)

Sampling volume (TWA)*

25-2400 L

Sampling flow rate (TWA)*

0.5-16 L/min - NIOSH, 0.5-5.0 L/min - recommended

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments PCM
Method reference NIOSH 7400 (fully validated) Alternate or B rules
Notes

See FIBROUS GLASS DUST†

1. Adjust to give 100-1300 fiber/mm²

2. Fiber count method is used for sampling in industries participating in voluntary NAIMA Partnership or HTIW Partnership programs, or for others as noted.

3. Exposure limit for NAIMA is 1.0 f/cc

4. Do not request multiple analytes. Do not overload. If dust is high, reduce air volume to avoid overloading.

5. A minimum of 2 blanks, or 10% of the number of samples are required for every set.

Special requirements

Do not allow samples to be loose in mailing packaging. See 29 CFR 1910.1001, Appendix A.

Filter material must be certified for asbestos analysis.

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

15 mg/m³ or 50 mppcf (total dust), 5 mg/m³ or 15 mppcf (respirable fraction)

REL-TWA

3 fibers/cm³ (fibers with diameter ≤ 3.5µm and length ≥ 10µm). TWA 5 mg/m³ (total).

TLV-TWA

1 fiber/cc (continuous filament glass fibers, glass wool fibers, rock wool fibers, slag wool fibers and special purpose glass fibers, [F]); 5 mg/m³ (continuous filament glass fibers, inhalable particulate matter]); 0.2 f/cc (refractory ceramic fibers [F]) [1999]

PEL-TWA

10 mg/m³ (total dust); 5 mg/m³ (respirable fraction)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

As Inert or Nuisance Dust. See 29 CFR 1910.1000 Table Z-3, Mineral Dusts.

Notes:

as Mineral wool fiber

Notes:

See TLV endnote [F].

Notes:

as Particulates not otherwise regulated; see footnote [n]

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-3, TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Mineral wool fiber

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Synthetic vitreous fibers. See annual publication for most recent information.

Last Updated Date : 01/12/2021