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Properties of substance:

2,2’-azobis[isobutyronitrile]

Synonyms:

2,2’-azobis[2-methylpropionitrile]
AIBN

Group of substances:

organic

Physical appearance:

colorless crystals

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

C8H12N4

Structural formula as text:

(CH3)2C(CN)N=NC(CN)(CH3)2

CAS No: 78-67-1

Molar/atomic mass: 164.208

Melting point (°C):

105-106

Decomposition temperature (°C):

106

Solubility (g/100 g of solvent):

acrylonitrile: 38 (25°C) [Ref.]
chloroform: 25 (25°C) [Ref.]
diethyl ether: soluble [Ref.]
ethanol: 0.73 (0°C) [Ref.]
ethanol: 2.58 (20°C) [Ref.]
ethanol: 9.05 (40°C) [Ref.]
methanol: 2.3 (0°C) [Ref.]
methanol: 6.28 (20°C) [Ref.]
methanol: 20.33 (40°C) [Ref.]
methyl methacrylate : 10 (25°C) [Ref.]
methylene chloride: 40 (25°C) [Ref.]
water: sparingly soluble [Ref.]

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

    246 (s) [Ref.]

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

    237,6 (s) [Ref.]

    LD50 (mg/kg):

    700 (mice, oral)
    25 (mice, intraperitoneal)

    References:

    1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-30
    2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 329
    3. The Merck Index 11th ed., Merck & Company, 1989. - pp. 146-147
    4. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 314-315 [Russian]
    5. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 52 [Russian]
    6. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 14 [Russian]
    7. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 14 [Russian]
    8. Энциклопедия полимеров. - Т.3, Полиоксадиазолы-Я. - М.: Советская энциклопедия, 1977. - pp. 155-156 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru