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U.S. SILICA COMPANY <br />Safety Data Sheet <br />Silica Sand or Ground Silica Page 4 of 9 <br />Date of preparation/revision: May 4, 2015 <br /> <br />Assigned <br />protection factor 1 <br />Type of Respirator <br />(Use only NIOSH-certified respirators) <br />10 Any air-purifying elastomeric half-mask respirator equipped with appropriate type of <br />particulate filter. 2 <br />Appropriate filtering facepiece respirator. 2,3 <br />Any air-purifying full facepiece respirator equipped with appropriate type of particulate filter. 2 <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 />1,000 pressure-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 /> <br />Skin protection: Maintain good industrial hygiene. Protection recommended for workers suffering from <br />dermatitis or sensitive skin. <br /> <br />Eye protection: Safety glasses with side shields or goggles recommended if eye contact is anticipated. <br /> <br />Other: None known. <br /> <br />9. PHYSICAL AND CHEMICAL PROPERTIES <br /> <br />Appearance (physical state, color, etc.): White or tan sand: granular, crushed or ground to a powder. <br />Odor: None. <br /> <br />Odor threshold: Not determined pH: 6-8 <br />Melting point/freezing point: 3110°F/1710°C Boiling point/range: 4046°F/2230°C <br />Flash point: Not applicable Evaporation rate: Not applicable <br />Flammable limits: LEL: Not applicable UEL: Not applicable <br />Vapor pressure: Not applicable Vapor density: Not applicable <br />Relative density: 2.65 Solubility(ies): Insoluble in water <br />Partition coefficient: n-octanol/water: Not <br />applicable <br />Auto-ignition temperature: Not determined <br />Decomposition temperature: Not determined Viscosity: Not applicable <br />Flammability (solid, gas): Not applicable <br /> <br /> <br />