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Properties of substance:

paraformaldehyde

Group of substances:

organic

Physical appearance:

colorless crystals

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

(CH2O)n

Structural formula as text:

HO(CH2O)nH

Melting point (°C):

150

Decomposition temperature (°C):

160-200

Solubility (g/100 g of solvent):

acetone: sparingly soluble [Ref.]
water: 25 (18°C) [Ref.]

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

-177.6 (s)

LD50 (mg/kg):

500 (mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-20
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 170 [Russian]
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 371 [Russian]
  4. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 745 [Russian]
  5. Энциклопедия для детей. - Т.17: Химия. - М.: Аванта+, 2004. - pp. 351 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru