M-Xylene (data page)

This page provides supplementary chemical data on m-Xylene.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.

Structure and properties

Structure and properties
Index of refraction, n_D	1.49722 at 20 °C
Abbe number	?
Dielectric constant,^[1] ε_r	2.374 ε₀ at 20 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Surface tension^[2]	31.15 dyn/cm at 0 °C 28.90 dyn/cm at 20 °C 20.46 dyn/cm at 100 °C
Viscosity^[3]	0.8059 mPa·s at 0 °C 0.6200 mPa·s at 20 °C 0.4970 mPa·s at 40 °C 0.3455 mPa·s at 80 °C 0.2418 mPa·s at 130 °C
Solubility^[4]	0.203 g/L at 0 °C 0.161 g/L at 25 °C 0.22 g/L at 40 °C

Thermodynamic properties

Phase behavior
Triple point	219.6 K (–53.5 °C), ? Pa
Critical point	618 K (345 °C), ? Pa
Std enthalpy change of fusion, Δ_fusH^o	11.57 kJ/mol
Std entropy change of fusion, Δ_fusS^o	51.36 J/(mol·K) at –47.88 °C
Std enthalpy change of vaporization, Δ_vapH^o	35.66 kJ/mol at 139.2 °C
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	? kJ/mol
Standard molar entropy, S^o_solid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	–25.4 kJ/mol
Standard molar entropy, S^o_liquid	253.80 J/(mol K)
Enthalpy of combustion, Δ_cH^o	–4549 kJ/mol
Heat capacity, c_p	184.5 J/(mol K) at 25 °C
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	17.2 kJ/mol
Standard molar entropy, S^o_gas	358.2 J/(mol K)
Heat capacity, c_p	125.8 J/(mol K)
van der Waals' constants^[5]	a = 3076 L² kPa/mol² b = 0.1772 liter per mole

Vapor pressure of liquid

P in mm Hg		1	10	40	100	400	760
T in °C		–6.9	28.3	55.3	76.8	116.7	139.1

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

**log₁₀ of m-Xylene vapor pressure.** Uses formula: $\scriptstyle \log _{e}P_{mmHg}=$ $\scriptstyle \log _{e}({\frac {760}{101.325}})-9.106679\log _{e}(T+273.15)-{\frac {7556.611}{T+273.15}}+76.86698+5.403634\times 10^{-6}(T+273.15)^{2}$ obtained from CHERIC^[6]

Distillation data

See also:

BP Temp. °C	% by mole carbon tetrachloride
Vapor-liquid Equilibrium for m-Xylene/Carbon tetrachloride^[7] P = 760 mm Hg
BP Temp. °C	liquid	vapor
137.0	1.8	5.8
131.9	6.5	21.9
126.8	11.4	35.6
122.0	16.4	46.5
118.1	20.8	55.2
113.9	25.8	62.6
110.2	30.6	68.7
106.4	35.7	73.9
102.8	41.2	78.8
102.3	41.9	79.6
98.1	48.8	84.3
94.1	56.2	88.0
90.6	63.5	91.1
87.5	70.4	93.5
84.6	77.5	95.5
82.1	84.3	97.1
79.7	91.1	98.4
77.5	97.7	99.6

BP Temp. °C	% by mole toluene
Vapor-liquid Equilibrium for m-Xylene/Toluene^[7] P = 760 mm Hg
BP Temp. °C	liquid	vapor
133.20	11.1	35.8
129.87	18.6	46.2
119.68	52.3	71.8
118.56	56.1	74.1
117.91	59.3	76.0
117.37	62.5	77.9
116.32	67.7	80.2
116.36	68.8	81.6
115.97	69.8	82.2
115.30	73.6	84.4

BP Temp. °C	% by mole benzene
Vapor-liquid Equilibrium for m-Xylene/Benzene^[7] P = 760 mm Hg
BP Temp. °C	liquid	vapor
124.80	10.2	44.7
118.94	17.5	59.8
115.40	21.4	65.5
112.30	28.4	73.2
106.35	34.0	78.0
102.08	42.7	83.3
99.15	49.4	86.5
96.70	59.5	90.3
90.89	68.1	93.0

BP Temp. °C	% by mole m-xylene
Vapor-liquid Equilibrium for m-Xylene/Aniline^[7] P = 745 mm Hg
BP Temp. °C	liquid	vapor
167	10.0	45.5
160	19.5	58.0
153	34.0	71.5
146	53.0	83.0
143	71.5	89.0
141	82.0	93.0

Spectral data

UV-Vis
λ_max	? nm
Extinction coefficient, ε	?
IR
Major absorption bands	? cm⁻¹
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

This box:

Except where noted otherwise, data relate to Standard temperature and pressure.
Reliability of data general note.

References

^ CRC Handbook of Chemistry and Physics, 44th ed. pp 2611–2620
^ Lange's Handbook of Chemistry, 10th ed. pp 1661–1663
^ Lange's Handbook of Chemistry, 10th ed. pp 1669–1674
^ CRC Handbook of Chemistry and Physics, 85th ed. p 8-111
^ Lange's Handbook of Chemistry, 10th ed, pp 1522–1524
^ "Pure Component Properties" (Queriable Database). Chemical Engineering Research Information Center. Retrieved 28 May 2007.
^ ^a ^b ^c ^d "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved 28 May 2007.

Linstrom, Peter (1997). "NIST Standard Reference Database". National Institute of Standards and Technology. doi:10.18434/T4D303. {{cite journal}}: Cite journal requires |journal= (help)

[1] CRC Handbook of Chemistry and Physics, 44th ed. pp 2611–2620

[2] Lange's Handbook of Chemistry, 10th ed. pp 1661–1663

[3] Lange's Handbook of Chemistry, 10th ed. pp 1669–1674

[4] CRC Handbook of Chemistry and Physics, 85th ed. p 8-111

[lange1522-5] Lange's Handbook of Chemistry, 10th ed, pp 1522–1524

[cheric_p-6] "Pure Component Properties" (Queriable Database). Chemical Engineering Research Information Center. Retrieved 28 May 2007.

[cheric_b-7] "Binary Vapor-Liquid Equilibrium Data" (Queriable database). Chemical Engineering Research Information Center. Retrieved 28 May 2007.

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