NIOSH Pocket Guide to Chemical Hazards

Mineral wool fiber CAS

RTECS PY8070000
Synonyms & Trade Names
Manmade mineral fibers, Rock wool, Slag wool, Synthetic vitreous fibers [Note: Produced by blowing steam or air through molten rock (rock wool) or various furnace slags that are by-products of metal smelting or refining processes (slag wool).]
DOT ID & Guide
Exposure
Limits
NIOSH REL: TWA 3 fibers/cm3 (fibers 3.5 m diameter & 10 m in length) TWA 5 mg/m3 (total)
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH N.D. Conversion
Physical Description
Typically, a mineral "wool" with diameters >0.5 m & >1.5 m in length.
MW: varies
BP: NA
MLT: ?
Sol: Insoluble
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: ?
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Fibers
Incompatibilities & Reactivities
None reported
Measurement Methods
NIOSH 0500, 7400
Personal Protection & Sanitation
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: No recommendation
Change: Daily

First Aid (See procedures)
Eye: Irrigate immediately

Breathing: Fresh air

Respirator Recommendations NIOSH
Up to 5X REL: (APF = 5) Any dust respirator
Up to 10X REL: (APF = 10) Any dust respirator except single-use and quarter-mask respirators/(APF = 10) Any air-purifying respirator with a high-efficiency particulate filter/(APF = 10) Any supplied-air respirator
Up to 25X REL: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 25) Any powered, air-purifying respirator with a dust filter
Up to 50X REL: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece
Up to 1000X REL: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; dyspnea (breathing difficulty)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION