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Properties of substance:

sodium tetraborate decahydrate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

H20B4Na2O17

Structural formula as text:

Na2B4O7 * 10H2O

Molar/atomic mass: 381.37

Decomposition temperature (°C):

60

Solubility (g/100 g of solvent):

acetone: 0.64 (25°C) [Ref.]
diethylene glycol: 22.9 (25°C) [Ref.]
ethanol: practically insoluble [Ref.]
ethanol 50%: 0.38 (25°C) [Ref.]
ethyl acetate: 0.14 (25°C) [Ref.]
ethylene glycol : 75.5 (25°C) [Ref.]
glycerol: 101 (25°C) [Ref.]
glycerol 98.5%: 111 (25°C) [Ref.]
methanol: 5.7 (36°C) [Ref.]
propylene glycol: 40.4 (25°C) [Ref.]
water: 4.65 (10°C) [Ref.]
water: 7.88 (20°C) [Ref.]
water: 11.9 (30°C) [Ref.]
water: 17.9 (40°C) [Ref.]
water: 27.41 (50°C) [Ref.]
water: 40.43 (60°C) [Ref.]
water: 57.85 (70°C) [Ref.]
water: 76.19 (80°C) [Ref.]
water: 201.43 (100°C) [Ref.]

Density:

1.73 (20°C, g/cm3)

Enthalpy (heat) of solution ΔsolH (kJ)

108 (s) [solvent: water, 18°C, 1 mol in 1600 mol of water] [Ref.]

References:

  1. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 47 [Russian]
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 162-163 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 83 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru