Lactose

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Lactose (Milk succar)
Identifiers
CAS number 63-42-3 YesY
PubChem 6134
ChemSpider 5904 YesY
UNII J2B2A4N98G YesY
EC-nummer 200-559-2
ChEBI CHEBI:36218 YesY
ChEMBL CHEMBL417016 N
Jmol-3D images Image 1
Properties
Molecular formula C12H22O11
Molar mass 342.30 g/mol
Appearance white solid
Density 1.525 g/cm3
Meltin pynt

202.8 °C[1]

Boilin pynt

668.9 °C[1]

Solubility in water 21.6 g/100 mL[2]
Thermochemistry
Std enthalpy o
combustion
ΔcHo298
5652 kJ/mol, 1351 kcal/mol, 16.5 kJ/g, 3.94 kcal/g
Hazards
EU Index nae leetit
NFPA 704
NFPA 704.svg
0
1
0
Flash pynt 357.8 °C[1]
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Lactose is a disaccharide succar derived frae galactose an glucose that is foond in milk. Lactose maks up aroond 2~8% o milk (bi wicht), altho the amoont varies amang species an individuals. It is extractit frae sweet or sour whey. The name comes frae lac or lactis, the Latin wird for milk, plus the -ose endin uised tae name succars. It haes a formula o C12H22O11.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 Anonymous. Sigma Aldrich. Lactose Product. http://www.sigmaaldrich.com/catalog/ProductDetail.do?lang=en&N4=17814%7CFLUKA&N5=SEARCH_CONCAT_PNO%7CBRAND_KEY&F=SPEC St. Louis MO.
  2. The solubility of lactose in water is 18.9049 g at 25 °C, 25.1484 g at 40 °C and 37.2149 g at 60 °C per 100 g solution. Its solubility in ethanol is 0.0111 g at 40 °C and 0.0270 g at 60 °C per 100 g solution.Machado, José J. B.; Coutinho, João A.; Macedo, Eugénia A. (2001), "Solid–liquid equilibrium of α-lactose in ethanol/water", Fluid Phase Equilibria 173 (1): 121–34, doi:10.1016/S0378-3812(00)00388-5 . ds