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Properties of substance:

lithium carbonate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

CLi2O3

Structural formula as text:

Li2CO3

Molar/atomic mass: 73.89

Melting point (°C):

732

Decomposition temperature (°C):

800-1270

Solubility (g/100 g of solvent):

N-methylpyrrolidone: 0.14 (room temperature) [Ref.]
acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
dimethylacetamide: 0.043 (room temperature) [Ref.]
dimethylformamide: 0.032 (room temperature) [Ref.]
dimethylsulfoxide: 0.13 (room temperature) [Ref.]
ethanol: 0.103 (20°C) [Ref.]
ethanol: 0.118 (25°C) [Ref.]
ethanol: 0.14 (30°C) [Ref.]
ethyl acetate: insoluble [Ref.]
hydrazine: insoluble [Ref.]
methanol: 0.118 (20°C) [Ref.]
methanol: 0.035 (21.8°C) [Ref.]
methanol: 0.14 (25°C) [Ref.]
methanol: 0.0555 (25°C) [Ref.]
methanol: 0.177 (30°C) [Ref.]
sulfolane: 0.17 (room temperature) [Ref.]
water: 1.563 (0°C) [Ref.]
water: 1.27 (25°C) [Ref.]
water: 1.01 (50°C) [Ref.]
water: 0.85 (75°C) [Ref.]
water: 0.72 (100°C) [Ref.]

Density:

2.11 (0°C, g/cm3)

Reactions:

  1. [Ref.1]
    Li2CO3 → Li2O + CO2
  2. [Ref.1]
    Li2CO3 + 4C → Li2C2 + 3CO

Dissociation:

pKsp (0) = 2.7 (20°C, water)

Viscosity (mPa·s):

4.64 (777°C)
3.36 (817°C)
2.83 (847°C)

Surface tension (mN/m):

243 (750°C)
241 (800°C)
239 (850°C)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1216.038 (s) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-1132.123 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

90.169 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

96.232 (s) [Ref.]

LD50 (mg/kg):

404 (rabbits, oral)
770 (, oral)
452 (frog, subcutaneous)
531 (mice, oral)
418 (mice, subcutaneous)
360 (mice, intraperitoneal)

References:

  1. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 1-2
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 909-911
  3. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 25 [Russian]
  4. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 76 [Russian]
  5. Остроушко Ю.И., Бучихин П.И. и др. Литий, его химия и технология. - М.: ИГУИАЭ, 1960. - pp. 53-55 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 76 [Russian]
  7. Редкие и рассеянные элементы. Химия и технология. - Кн. 1. - М.: Мисис, 1996. - pp. 27-28 [Russian]
  8. Токсикологический вестник. - 1996. - №4. - pp. 29-30 [Russian]
  9. Химия и технология редких и рассеянных элементов. - Ч. 1. - М.: Высшая школа, 1976. - pp. 14-16 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru