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Properties of substance:

riboflavin



skc-file

Group of substances:

organic

Physical appearance:

needles crystals

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

C17H20N4O6

Molar/atomic mass: 376.364

Melting point (°C):

282

Decomposition temperature (°C):

282

Solubility (g/100 g of solvent):

1-butanol: slightly soluble [Ref.]
1-pentanol: slightly soluble [Ref.]
acetic acid: sparingly soluble [Ref.]
acetone: insoluble [Ref.]
amyl acetate: slightly soluble [Ref.]
benzene: insoluble [Ref.]
benzine: insoluble [Ref.]
chloroform: insoluble [Ref.]
cyclohexane: slightly soluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: 0.0045 (20°C) [Ref.]
formic acid: sparingly soluble [Ref.]
hydrochloric acid 3%: 0.026 (15°C) [Ref.]
hydrochloric acid 30%: 22 (15°C) [Ref.]
methanol: slightly soluble [Ref.]
phenol: slightly soluble [Ref.]
pyridine: slightly soluble [Ref.]
water: 0.012 (27.5°C) [Ref.]
water: 0.019 (40°C) [Ref.]
water: 0.23 (100°C) [Ref.]

Numerical data:

Year of discovery: 1932

LD50 (mg/kg):

50 (rats, intravenous)

Spectral properties of the substance:

Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 268 (314)
Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 223 (301)
Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 445 (123)
Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 374 (108)

References:

  1. Kleemann A. Pharmaceutical Substances. - 2000. - pp. 1807-1809
  2. Березовский В.М. Химия витаминов. - М.: Пищевая промышленность, 1973. - pp. 507-548 [Russian]
  3. Меченые биологически активные вещества. Сборник статей. - Вып.3. - М.: Атомиздат, 1971. - pp. 79 [Russian]
  4. Новый справочник химика и технолога. Основные свойства неорганических, органических и элементоорганических соединений. - СПб.: НПО Профессионал, 2007. - pp. 956 [Russian]
  5. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 266-267 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru