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Properties of substance:

piperazine



skc-file

Group of substances:

organic

Physical appearance:

colorless rhombic crystals

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

C4H10N2

Structural formula as text:

HN(CH2CH2)2NH

CAS No: 110-85-0

Molar/atomic mass: 86.136

Melting point (°C):

104

Boiling point (°C):

145

Solubility (g/100 g of solvent):

diethyl ether: insoluble [Ref.]
ethanol 95%: 63.3 [Ref.]
glycerol: very soluble [Ref.]
water: soluble [Ref.]

Hygroscopic:

yes

    Dissociation:

    pKBH+ (1) = 9.81 (25°C, water)
    pKBH+ (2) = 5.57 (25°C, water)

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

    -45.6 (s)

    LD50 (mg/kg):

    1900 (rats, oral)
    1340 (rats, intravenous)
    600 (mice, oral)
    1180 (mice, intravenous)

    References:

    1. Armarego W. L. F. Purification of Laboratory Chemicals. - 5ed. - 2003. - pp. 336
    2. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-27
    3. Clarke's isolation and identification of drugs. - 2ed. - London: Pharmaceutical press, 1986. - pp. 906-907
    4. Kleemann A. Pharmaceutical Substances. - 2000. - pp. 1651
    5. Stahl P.H., Wermuth C.G. Handbook of Pharmaceutical Salts: Properties, Selection, and Use. - Wiley-VCH, 2002. - pp. 321
    6. Гетероциклические соединения. - Т. 6, под ред. Эльдерфилда Р. - М.: ИИЛ, 1960. - pp. 344-350 [Russian]
    7. Краткая химическая энциклопедия. - Т. 3: Мальтаза-Пиролиз. - М.: Советская энциклопедия, 1964. - pp. 1041-1042 [Russian]
    8. Полюдек-Фабини Р., Бейрих Т. Органический анализ. - Л.: Химия, 1981. - pp. 309-310 [Russian]
    9. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 878-879 [Russian]
    10. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 103 [Russian]
    11. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 519 [Russian]
    12. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 439 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru