Chemical Properties of Lactose (CAS 63-42-3)


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InChI Key
Molecular Weight1
Other Names
  • (+)-Lactose
  • 4-(«beta»-D-Galactosido)-D-glucose
  • AHL
  • Aletobiose
  • D-Glucose, 4-O-«beta»-D-galactopyranosyl-
  • D-Lactose
  • D-glucose, 4-(beta-d-galactosido)-
  • Fast-Flo Lactose
  • Fast-flo
  • Galactinum
  • Lactin
  • Lactin (carbohydrate)
  • Lactobiose
  • Lactose Fast-flo
  • Milk sugar
  • Osmolactan
  • Pharmatose 21
  • Saccharum lactin
  • Tablettose
  • Zeparox EP

Physical Properties

Property Value Unit Source
Δf -1334.42 kJ/mol Joback Calculated Property
Δfgas -1959.15 kJ/mol Joback Calculated Property
Δfus 68.92 kJ/mol Joback Calculated Property
Δvap 185.55 kJ/mol Joback Calculated Property
logPoct/wat -5.40 Crippen Calculated Property
Pc 4311.22 kPa Joback Calculated Property
Tboil 1289.46 K Joback Calculated Property
Tc 1783.82 K Joback Calculated Property
Tfus 767.77 K Joback Calculated Property
Vc 0.78 m3/kg-mol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 889.71 J/mol×K 1289.46 Joback Calculated Property
Cp,solid 417.60 J/mol×K 300.0 NIST
η 0.00 Pa×s 1289.46 Joback Calculated Property

Molecular Descriptors

Joback and Reid Groups
-O- (nonring) 1
-O- (ring) 2
>CH- (ring) 10
-CH2- 2
-OH (alcohol) 8

Similar Compounds

D-Glucose, 4-O-«alpha»-D-glucopyranosyl-, hydrate (1:1). «alpha»-D-Glucopyranose, 4-O-«beta»-D-galactopyranosyl-, hydrate (1:1). Cellobiose. «beta»-D-Glucopyranose, 4-O-«beta»-D-galactopyranosyl-. D-cellobiose. Maltose. ALPHA-D-(+)-LACTOSE. Lactose monohydrate. .alpha.-Cyclodextrin. D-(+)-maltose. Alpha-d-melibiose, monohydrate. Maltotetraose, permethyl. Maltotriose, permethyl. D-glucose, 4,6-o-ethylidene. «beta»-D-Glucopyranoside, 1-(2-butyl), permethylated, # 2.

Find more compounds similar to Lactose.

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