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Properties of substance:

buta-1,3-diyne

Synonyms:

butadiyne

Group of substances:

organic

Physical appearance:

gas

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

C4H2

Structural formula as text:

HC≡C-C≡CH

Molar/atomic mass: 50.06

Melting point (°C):

-36.4

Boiling point (°C):

10.3

Solubility (g/100 g of solvent):

diethyl ether: very soluble [Ref.]
ethanol: soluble [Ref.]
oxygen liquid: 0.000025 (-183°C) [Ref.]
water: 1 (25°C) [Ref.]

Density:

0.7364 (0°C, g/cm3)

Refractive index (nD):

1.4386 (20°C)

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

-472.8 (g)

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

250.2 (g)

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

73.69 (g)

References:

  1. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 79
  2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 534-535 [Russian]
  3. Рапопорт Ф.М., Ильинская А.А. Лабораторные методы получения чистых газов. - М., 1963. - pp. 379-384 [Russian]
  4. Справочник нефтехимика. - Т.1, под ред. Огородникова С.К. - Л.: Химия, 1978. - pp. 462-463 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 544-545 [Russian]
  6. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 47 [Russian]
  7. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 161 [Russian]
  8. Шостаковский М.Ф., Богданова А.В. Химия диацетилена. - М.: Наука, 1971 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru