Experimental Study on the Absorption of Toluene from Exhaust Gas by Paraffin/Surfactant/Water Emulsion

Table 2

Physical and chemical properties of common VOCs.

Compound	Formula	Molecular weight (g·mol^−1)	Relative density (g·cm^−3)	Boiling point (°C)	Melting point (°C)	Logarithm of the octanol/water partition coefficient	Saturated vapor pressure (Kpa)	Polarity
Benzene	C6H6	78.11	0.8765	80.1	5.5	2.15	26.66 (31.6°C)	3.0
Toluene	C7H8	92.14	0.8636	110.6	−94.9	2.69	4.89 (30°C)	2.4
Xylene	C8H10	106.16	0.880	144.4	−25	3.12	1.33 (32°C)	2.5 (p-xylene)
Acetone	C3H6O	58.08	0.797	56.48	−94.6	−0.24	37.69 (30°C)	5.4
Ethyl acetate	C4H8O2	88.10	0.90	77.2	−83.6	0.73	13.33 (27°C)	4.3
Hexane	C6H14	86.17	0.659	68.7	−95.6	3.9	17 (20°C)	0.06
Water	H2O	18.02	1	100	0	—	2.34 (20°C)	10.20