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SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION <br />Additional information about design of technical systems: <br />No further data; see section 7. <br />Control parameters <br />Components with limit values that require monitoring at the workplace: <br />7440-21-3 Silicon (100.0%) <br />PEL (USA) Long-term value: 15* 5** mg/m3 <br />*total dust **respirable fraction <br />REL (USA) Long-term value: 10* 5** mg/m3 <br />*total dust **respirable fraction <br />TLV (USA) TLV withdrawn <br />EL (Canada) Long-term value: 10 mg/m3 <br />EV (Canada) Long-term value: 10 mg/m3 <br />total dust <br />Additional information: <br />No data <br />Exposure controls <br />Personal protective equipment <br />Follow typical protective and hygienic practices for handling chemicals. <br />Maintain an ergonomically appropriate working environment. <br />Breathing equipment: <br />Not required. <br />Protection of hands: <br />Not required. <br />Penetration time of glove material (in minutes) <br />No data available <br />Eye protection: <br />Safety glasses <br />Body protection: <br />Protective work clothing. <br />SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES <br />Information on basic physical and chemical properties <br />Appearance: <br />Form: Solid in various forms <br />Color: No data available <br />Odor: Odorless <br />Odor threshold: No data available. <br />pH: N/A <br />Melting point/Melting range: 1423 °C (2593 °F) <br />Boiling point/Boiling range: 2355 °C (4271 °F) <br />Sublimation temperature / start: No data available <br />Flammability (solid, gas) <br />No data available. <br />Ignition temperature: No data available <br />Decomposition temperature: No data available <br />Autoignition: No data available. <br />Danger of explosion: No data available. <br />Explosion limits: <br />Lower: No data available <br />