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Properties of substance:

3-methylbenzoic acid

Synonyms:

m-toluic acid
meta-toluic acid

Group of substances:

organic

Physical appearance:

colorless prismatic crystals

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

C8H8O2

Structural formula as text:

CH3C6H4COOH

Molar/atomic mass: 136.148

Melting point (°C):

112

Boiling point (°C):

263

CAS №: 99-04-7

Solubility (g/100 g of solvent):

chloroform: sparingly soluble [Ref.]
diethyl ether: very soluble [Ref.]
ethanol: very soluble [Ref.]
m-xylene: 9.37 (14°C) [Ref.]
monochlorbenzene: 9.22 (14.1°C) [Ref.]
p-xylene: 11.51 (14°C) [Ref.]
water: 0.098 (25°C) [Ref.]
water: 1.17 (80°C) [Ref.]

Not numerical data:

volatile in steam

Density:

1.054 (112°C, g/cm3)

Dissociation:

pKa (1) = 4.27 (25°C, water)

LD50 (mg/kg):

1630 (white mice, )

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-514
  2. Dictionary of organic compounds. - Vol. 3, naphthacarbazole - zygadenine. - М.: ИИЛ, 1949. - pp. 777
  3. Journal of Physical and Chemical Reference Data. - 2013. - Vol. 42, No. 3. - pp. 033103-460 - 033103-475
  4. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 586-588
  5. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 475
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 493 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1395 [Russian]
  8. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 994-995 [Russian]
  9. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 94 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru