phosphoric trichloride

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Properties of substance:

phosphoric trichloride

Synonyms:

phosphoryl chloride

Group of substances:

inorganic

Physical appearance:

colorless fuming liquid

Empirical formula (Hill's system for organic substances):

Cl₃OP

Structural formula as text:

POCl3

Molar/atomic mass: 153.33

Melting point (°C):

1.2

Boiling point (°C):

107.2

Solubility (g/100 g of solvent):

chlorine liquid: very soluble [Ref.]
ethanol: reaction [Ref.]
sulfur dioxide: miscible [Ref.]
water: reaction [Ref.]

Density:

1.675 (20°C, g/cm³)

Reactions of synthesis:

[Ref.1]
Ca₃(PO₄)₂ + 6CO + 6Cl₂ → 2POCl₃ + 6CO₂ + 3CaCl₂

Refractive index (n_D):

1.46 (25°C)

Vapour pressure (Torr):

10 (2°C)
100 (46.5°C)

Permittivity (dielectric constant):

13.7 (25°C)

Dipole moment (D):

2.4 (20°C)

Viscosity (mPa·s):

1.065 (25°C)

Surface tension (mN/m):

31.6 (25°C)

Standard molar enthalpy (heat) of formation Δ_fH⁰ (298.15 K, kJ/mol):

-597.5 (l)

Standard molar Gibbs energy of formation Δ_fG⁰ (298.15 K, kJ/mol):

-521.3 (l)

Standard molar entropy S⁰ (298.15 K, J/(mol·K)):

222.5 (l)

Molar heat capacity at constant pressure C_p (298.15 K, J/(mol·K)):

138.8 (l)

Molar enthalpy (heat) of fusion Δ_fusH (kJ/mol):

13.1

Enthalpy (heat) of vaporization Δ_vapH (kJ/mol):

34.5

Standard molar enthalpy (heat) of formation Δ_fH⁰ (298.15 K, kJ/mol):

-559 (g)

Standard molar entropy S⁰ (298.15 K, J/(mol·K)):

284.9 (g)

Molar heat capacity at constant pressure C_p (298.15 K, J/(mol·K)):

68.7 (g)

LD₅₀ (mg/kg):

380 (rats, oral)

References:

CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-81
Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 134-135 [Russian]
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 456 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 108 [Russian]
Фурман А.А. Неорганические хлориды (химия и технология). - М.: Химия, 1980. - pp. 297 [Russian]

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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru

Properties of substance:

phosphoric trichloride

Synonyms:

Group of substances:

Physical appearance:

Empirical formula (Hill's system for organic substances):

Structural formula as text:

Molar/atomic mass: 153.33

Melting point (°C):

Boiling point (°C):

Solubility (g/100 g of solvent):

Density:

Reactions of synthesis:

Refractive index (nD):

Vapour pressure (Torr):

Permittivity (dielectric constant):

Dipole moment (D):

Viscosity (mPa·s):

Surface tension (mN/m):

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

Standard molar entropy S0 (298.15 K, J/(mol·K)):

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

Standard molar entropy S0 (298.15 K, J/(mol·K)):

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

LD50 (mg/kg):

References:

Refractive index (n_D):

Standard molar enthalpy (heat) of formation Δ_fH⁰ (298.15 K, kJ/mol):

Standard molar Gibbs energy of formation Δ_fG⁰ (298.15 K, kJ/mol):

Standard molar entropy S⁰ (298.15 K, J/(mol·K)):

Molar heat capacity at constant pressure C_p (298.15 K, J/(mol·K)):

Molar enthalpy (heat) of fusion Δ_fusH (kJ/mol):

Enthalpy (heat) of vaporization Δ_vapH (kJ/mol):

Standard molar enthalpy (heat) of formation Δ_fH⁰ (298.15 K, kJ/mol):

Standard molar entropy S⁰ (298.15 K, J/(mol·K)):

Molar heat capacity at constant pressure C_p (298.15 K, J/(mol·K)):

LD₅₀ (mg/kg):