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TWA: 0.5 STEL: 2.5 (ppm) from ACGIH (TLV) [United States] <br />TWA: 1.6 STEL: 8 (mg/m3) from ACGIH (TLV) [United States] <br />TWA: 0.1 STEL: 1 from NIOSH <br />TWA: 1 STEL: 5 (ppm) from OSHA (PEL) [United States] <br />TWA: 10 (ppm) from OSHA (PEL) [United States] <br />TWA: 3 (ppm) [United Kingdom (UK)] <br />TWA: 1.6 (mg/m3) [United Kingdom (UK)] <br />TWA: 1 (ppm) [Canada] <br />TWA: 3.2 (mg/m3) [Canada] <br />TWA: 0.5 (ppm) [Canada]Consult local authorities for acceptable exposure limits. <br />Section 9: Physical and Chemical Properties <br />Physical state and appearance: Liquid. <br />Odor: <br />Aromatic. Gasoline-like, rather pleasant. <br />(Strong.) <br />Taste: Not available. <br />Molecular Weight: 78.11 g/mole <br />Color: Clear Colorless. Colorless to light yellow. <br />pH (1% soln/water): Not available. <br />Boiling Point: 80.1 (176.2°F) <br />Melting Point: 5.5°C (41.9°F) <br />Critical Temperature: 288.9°C (552°F) <br />Specific Gravity: 0.8787 @ 15 C (Water = 1) <br />Vapor Pressure: 10 kPa (@ 20°C) <br />Vapor Density: 2.8 (Air = 1) <br />Volatility: Not available. <br />Odor Threshold: 4.68 ppm <br />Water/Oil Dist. Coeff.: The product is more soluble in oil; log(oil/water) = 2.1 <br />lonicity (in Water): Not available. <br />Dispersion Properties: See solubility in water, diethyl ether, acetone. <br />Solubility: <br />Miscible in alcohol, chloroform, carbon disulfide oils, carbon tetrachloride, glacial acetic acid, diethyl ether, <br />acetone. <br />Very slightly soluble in cold water. <br />Section 10: Stability and Reactivity Data <br />Stability: The product is stable. <br />Instability Temperature: Not available. <br />p.4