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Properties of substance:

2-methyl-2-propanol



skc-file

Synonyms:

tert-butanol

Group of substances:

organic

Physical appearance:

colorless rhombic crystals

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

C4H10O

Structural formula as text:

(CH3)3COH

Molar/atomic mass: 74.12199

Melting point (°C):

25.5

Boiling point (°C):

82.2

Decomposition temperature (°C):

500

CAS №: 75-65-0

Solubility (g/100 g of solvent):

diethyl ether: miscible [Ref.]
ethanol: miscible [Ref.]
water: miscible [Ref.]

Density:

0.7887 (20°C, g/cm3)

Reactions:

  1. Yeild 60%. [Ref.1]
    CH2=C=O + (CH3)3COH → CH3COOC(CH3)3
  2. [Ref.1]
    3(CH3)3COH + 2H2O2 → (CH3)3COOC(CH3)3 + (CH3)3COOH + 3H2O

Refractive index (nD):

1.3954 (20°C)

Dissociation:

pKBH+ (1) = -3.8 (25°C, water)
pKa (1) = 19 (20°C, water)

Viscosity (mPa·s):

33.16 (30°C)

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

-359.2 (l)

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

193.3 (l)

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

218.6 (l)

Flash point (°C):

10

Autoignition temperature (°C):

480

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

-312.5 (g)

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

326.7 (g)

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

113.6 (g)

LD50 (mg/kg):

3559 (rabbits, oral)
3500 (rats, oral)
1538 (mice, intravenous)
933 (mice, intraperitoneal)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-27
  2. Краткая химическая энциклопедия. - Т. 1: А-Е. - М.: Советская энциклопедия, 1961. - pp. 496-497 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 134 [Russian]
  4. Реутов О.А., Курц А.Л., Бутин К.П. Органическая химия. - 2-е изд., Ч.1. - М.: Бином. Лаборатория знаний, 2005. - pp. 222 [Russian]
  5. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 320-321 [Russian]
  6. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 155 [Russian]
  7. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 337 [Russian]
  8. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 88 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru