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Properties of substance:

L-arginine



skc-file

Group of substances:

organic

Physical appearance:

prismatic crystals

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

C6H14N4O2

Structural formula as text:

H2NC(=NH)NH(CH2)3CH(NH2)COOH

Molar/atomic mass: 174.2

Melting point (°C):

238

Decomposition temperature (°C):

238

Solubility (g/100 g of solvent):

diethyl ether: insoluble [Ref.]
ethanol: sparingly soluble [Ref.]
water: 11.43 (10°C) [Ref.]
water: 15 (21°C) [Ref.]
water: 19.35 (30°C) [Ref.]
water: 30.84 (50°C) [Ref.]

Dissociation:

pKBH+ (1) = 9.04 (25°C, water)
pKBH+ (2) = 2.17 (25°C, water)
pKa (1) = 12.48 (25°C, water)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-30
  2. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 325
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 125 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru