SDS

crystalline silica, respirable
particulate matter)
Crystalline silica TWAs
0.025 mg/m3 TWA (respirable
particulate matter)
0.05 mg/m3 TWA (respirable dust)
50 µg/m3 TWA (listed under
Respirable crystalline silica)
Exposure Limits Supplemental
OSHA
•Portland cement (65997-15-1): Mineral Dusts: (50 mppcf TWA (<1% Crystalline silica))
•Crystalline silica (14808-60-7): Mineral Dusts: ((250)/(%SiO2 + 5) mppcf TWA, respirable fraction; (10)/(%SiO2 + 2) mg/m3 TWA, respirable
fraction)
Exposure controls
Engineering
Measures/Controls
•
Adequate ventilation systems as needed to control concentrations of airborne contaminants
below applicable threshold limit values. Ensure that dust handling systems (such as exhaust
ducts, dust collectors, vessels and processing equipment) are designed in a manner to
prevent the escape of dust into the work area (i.e., there is not leakage from the equipment).
Personal Protective Equipment
Respiratory
•
For limited exposure use an N95 dust mask. For prolonged exposure use an air-purifying
respirator with high efficiency particulate air (HEPA) filters. Follow the OSHA respirator
regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA
or European Standard EN 149 approved respirator if exposure limits are exceeded or
symptoms are experienced.
Eye/Face
•
Wear safety goggles.
Skin/Body
•
Wear appropriate gloves. Wear long sleeves and/or protective coveralls.
Environmental
Exposure Controls
•
Follow best practice for site management and disposal of waste.
Key to abbreviations
A
CGIH =
A
merican Conference of Governmental Industrial Hygiene
NIOSH = National Institute of Occupational Safety and Health
OSHA = Occupational Safety and Health Administration
TWA = Time-Weighted Averages are based on 8h/day, 40h/week exposures
Section 9 - Physical and Chemical Properties
Information on Physical and Chemical Properties
Material Description
Physical Form Solid Appearance/Description
Solid concrete products of
various shapes, sizes, and colors.
Color Various Odor No data available
Odor Threshold No data available
General Properties
Boiling Point No data available Melting Point/Freezing Point No data available
Decomposition Temperature No data available pH No data available
Specific Gravity/Relative Density No data available Water Solubility No data available
Viscosity No data available
Volatility
Vapor Pressure No data available Vapor Density No data available
Evaporation Rate No data available
Flammability
Flash Point No data available UEL No data available
LEL No data available Autoignition No data available
Flammability (solid, gas) No data available
Environmental
Octanol/Water Partition
coefficient
No data available