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Helium <br /> Section 8. Exposure controls/personal protection <br /> Respiratory protection Based on the hazard and potential for exposure, select a respirator that meets the <br /> appropriate standard or certification. Respirators must be used according to a <br /> respiratory protection program to ensure proper fitting,training, and other important <br /> aspects of use. Respirator selection must be based on known or anticipated exposure <br /> levels,the hazards of the product and the safe working limits of the selected respirator. <br /> Section 9. Physical and chemical properties <br /> Appearance <br /> Physical state Gas. [Compressed gas.] <br /> Color Colorless. <br /> Odor Odorless. <br /> Odor threshold Not available. <br /> pH Not available. <br /> Melting point -272.2°C (-458°F) <br /> Boiling point -268.9°C (-452°F) <br /> Critical temperature -267.9°C (-450.2°F) <br /> Flash point [Product does not sustain combustion.] <br /> Evaporation rate Not available. <br /> Flammability (solid, gas) Not available. <br /> Lower and upper explosive Not available. <br /> (flammable) limits <br /> Vapor pressure Not available. <br /> Vapor density 0.14 (Air= 1) Liquid Density@BP: 7.8 Ib/ft3(125 kg/m3) <br /> Specific Volume(ft'/Ib) 96.1538 <br /> Gas Density (lb/ft') 0.0104 <br /> Relative density Not applicable. <br /> Solubility Not available. <br /> Solubility in water Not available. <br /> Partition coefficient: n- 0.28 <br /> octanollwater <br /> Auto-ignition temperature Not available. <br /> Decomposition temperature Not available. <br /> Viscosity Not applicable. <br /> Flow time (ISO 2431) Not available. <br /> Molecular weight 4 g/mole <br /> Section 10. Stability and reactivity <br /> Reactivity No specific test data related to reactivity available for this product or its ingredients. <br /> Chemical stability The product is stable. <br /> Possibility of hazardous Under normal conditions of storage and use, hazardous reactions will not occur. <br /> reactions <br /> Conditions to avoid No specific data. <br /> Incompatible materials No specific data. <br /> Hazardous decomposition Under normal conditions of storage and use, hazardous decomposition products should <br /> products not be produced. <br /> Date of issue/Date of revision :4/2312018 Date of previous issue :112912018 Version :1.01 5110 <br />