SDS

SAFETY DATA SHEET FILE NO.: SDS.NATURALSTONE.01
NATURAL STONE SDS DATE: January 2015
PAGE 6 OF 8
SECTION 10: STABILITY AND REACTIVITY DATA
STABILITY: The product is STABLE under normal conditions of storage and use. Contact with incompatible materials
should be avoided.
CONDITIONS TO AVOID (STABILITY): Avoid contact with incompatible materials (see below) and exposure to crystalline
silica (quartz) dust particles, usually generated while cutting, crushing, and/or sawing.
INCOMPATIBILITY (MATERIAL TO AVOID): Silica reacts violently with powerful oxidizing agents such as fluorine, boron
trifluoride, chlorine trifluoride, manganese trifluoride, and oxygen difluoride may cause fire and/or explosions. Silica dissolves
readily in hydrofluoric acid producing a corrosive gas – silicon tetra fluoride.
HAZARDOUS DECOMPOSITION OR BY-PRODUCTS: Limestone ignites on contact with fluorine and is incompatible with acids,
alum, ammonium salts, and magnesium. Silica-containing respirable dust particles may release from handling or cutting.
HAZARDOUS POLYMERIZATION: Not known to polymerize
CONDITIONS TO AVOID (POLYMERIZATION): Not applicable
SECTION 11: TOXICOLOGICAL INFORMATION
EXPOSURE LIMITS:
Below is a definition of exposure limits in the workplace, that is especially important when contact with this product and other
chemicals is concurrent. Unless specified otherwise, limits are eight-hour time-weighted averages (TWA). Limits for cristobalite and
tridymite (other forms of crystalline silica) are equal to one-half of the limits for quartz.
INHALABLE PARTICULATE LIMITS
• 2001 ACGIH TLV® = 10 mg/m3 (inhalable /total particulate, not otherwise specified)
• 2001 ACGIH TLV® = 3 mg/m3 (respirable particulate, not otherwise specified)
• OSHA PEL = 15 mg/m3 (total particulate, not otherwise regulated)
• OSHA PEL = 5 mg/m3 (respirable particulate, not otherwise regulated).
RESPIRABLE LIMIT, Crystalline Silica (SiO2 or Quartz)
ACGIH TLV® = 0.05 mg/m3; MSHA and OSHA PEL = 10 mg/m3 (%SiO2 + 2), for respirable dust containing crystalline silica.
TOTAL DUST LIMITS, RESPIREABLE AND NONRESPIRABLE
1973 ACGIH TLV® = 30 mg/m3 ÷ (% quartz + 3). MSHA PEL = 10 mg/m3 for nuisance particulates listed in Appendix E of the 1973
ACGIH TLV® booklet. [Appendix E includes: alundum (Al2O3); calcium carbonate; cellulose (paper fiber); Portland cement;
corundum (Al2O3); emery; glass {fibrous (< 5-7 µm in diameter) or dust}; glycerin mist; graphite (synthetic); gypsum; vegetable oil
mists (except castor, cashew nut, or similar irritant oils); kaolin; limestone; magnesite; marble; pentacrythritol; plaster of Paris;
rouge; silicon carbide; starch; sucrose; tin oxide; and titanium dioxide].
ROUTE OF ENTRY:
 Skin Contact
 Skin Absorption
 Eye Contact
 Ingestion
 Acute Inhalation
 Chronic Inhalation