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Properties of substance:

benzaldehyde



skc-file

Group of substances:

organic

Physical appearance:

colorless liquid

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

C7H6O

Structural formula as text:

C6H5CHO

Molar/atomic mass: 106.13

Melting point (°C):

-26

Boiling point (°C):

179

Solubility (g/100 g of solvent):

acetone: very soluble [Ref.]
ammonia liquid : 455 [Ref.]
benzene: very soluble [Ref.]
diethyl ether: miscible [Ref.]
ethanol: miscible [Ref.]
hydrogen fluoride : very soluble [Ref.]
ligroin: very soluble [Ref.]
propylene glycol: miscible [Ref.]
sulfolane: miscible [Ref.]
water: 0.345 (20°C) [Ref.]
water: 0.9509 (60°C) [Ref.]

Density:

1.0498 (20°C, g/cm3)

Reactions:

  1. Yeild 55-60%. [Ref.1aster]
    C6H5CHO + (CH3CO)2O → C6H5CH=CHCOOH + CH3COOH
  2. Yeild 89%. [Ref.1aster]
    C6H5CHO + NH3 + H2 → C6H5CH2NH2 + H2O

Dissociation:

pKBH+ (1) = -7.1 (25°C, water)
pKa (1) = 14.9 (25°C, water)

Retention indices for gas chromatography:

936,6 (phase - 100% dimethylsilicone)
962,7 (phase - dimethylsilicone with 5% phenyl groups)

Heat of combustion (kJ/mol):

3520

LD50 (mg/kg):

1300 (rats, oral)

References:

  1. Dictionary of organic compounds. - Vol.1, Abadole-Cytosine. - New York, 1953. - pp. 237
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 353
  3. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 497
  4. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 368-369
  5. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 229 [Russian]
  6. Реутов О.А., Курц А.Л., Бутин К.П. Органическая химия. - 2-е изд., Ч.1. - М.: Бином. Лаборатория знаний, 2005. - pp. 223 [Russian]
  7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 470-471 [Russian]
  8. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 256 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru