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U.S. SILICA COMPANY <br /> Safety Data Sheet <br /> Silica Sand or Ground Silica Page 4 of 9 <br /> Assigned Type of Respirator <br /> protection factor (Use only NIOSH-certified respirators) <br /> 10 Any air-purifying elastomeric half-mask respirator equipped with appropriate type of <br /> particulate filter.a <br /> Appropriate filtering facepiece respirator.1,3 <br /> Any air-purifying full facepiece respirator equipped with appropriate type of particulate filter.Z <br /> Any negative pressure demand supplied-air respirator equipped with a half-mask. <br /> 25 Any powered air-purifying respirator equipped with a hood or helmet and a high efficiency <br /> (HEPA)filter. <br /> Any continuous flow supplied-air respirator equipped with a hood or helmet. <br /> 50 Any air-purifying full facepiece respirator equipped with N-100,R-100,or P-100 filter(s). <br /> Any powered air-purifying respirator equipped with a tight-fitting facepiece(half or full <br /> facepiece)and a high-efficiency filter. <br /> Any negative pressure(demand)supplied-air respirator equipped with a full facepiece. <br /> Any continuous flow supplied-air respirator equipped with a tight-fitting facepiece(half or full <br /> facepiece). <br /> Any negative pressure(demand)self-contained respirator equipped with a full facepiece. <br /> 1,000pressure-demand supplied-air respirator equipped with a half-mask. <br /> 1.The protection offered by a given respirator is contingent upon(1)the respirator user adhering to complete program <br /> requirements(such as the ones required by OSHA in 29CFR1910.134),(2)the use of NIOSH-certified respirators in <br /> their <br /> approved configuration,and(3)individual fit testing to rule out those respirators that cannot achieve a good fit on <br /> individual workers. <br /> 2.Appropriate means that the filter medium will provide protection against the particulate in question. <br /> 3.An APF of 10 can only be achieved if the respirator is qualitatively or quantitatively fit tested on individual workers. <br /> Skin protection: Maintain good industrial hygiene. Protection recommended for workers suffering from <br /> dermatitis or sensitive skin. <br /> Eye protection: Safety glasses with side shields or goggles recommended if eye contact is anticipated. <br /> Other: None known. <br /> 9. PHYSICAL AND CHEMICAL PROPERTIES <br /> Appearance(physical state,color,etc.): White or tan sand: granular, crushed or ground to a powder. <br /> Odor: None. <br /> Odor threshold: Not determined H: 6-8 <br /> -Melting point/freezing point: 3110°F/1710°C Boiling point/range: 4046°F/2230°C <br /> Flashpoint: Not applicable Evaporation rate: Not applicable <br /> Flammable limits: LEL: Not applicable UEL:Not applicable <br /> Vaporpressure: Not applicable Va or densi : Not applicable <br /> Relative density: 2.65 Solubili (ies): Insoluble in water <br /> Partition coefficient: n-octanol/water: Not Auto-ignition temperature: Not determined <br /> applicable <br /> -Decomposition temperature: Not determined Viscosity:Not applicable <br /> Flammability(solid, as): Not applicable <br /> Date of preparation/revision: May 4, 2015 <br />