Lactose

Lactose (Milk succar)
Names
	IUPAC name β-D-galactopyranosyl-(1→4)-D-glucose
	Ither names Milk succar; 4-O-β-D-galactopyranosyl-D-glucose
Identifiers
CAS Nummer	63-42-3;
3D model (JSmol)	Interactive eemage;
ChEBI	CHEBI:36218;
ChEMBL	ChEMBL417016;
ChemSpider	5904;
PubChemCID	6134;
UNII	J2B2A4N98G;
	InChI InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11-,12+/m1/s1 Key: GUBGYTABKSRVRQ-DCSYEGIMSA-N; InChI=1/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11-,12+/m1/s1 Key: GUBGYTABKSRVRQ-DCSYEGIMBP;
	SMILES C([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](O[C@H]([C@@H]([C@H]2O)O)O)CO)O)O)O)O;
Properties
Chemical formula	C12H22O11
Molar mass	342.30 g/mol
Appearance	white solid
Density	1.525 g/cm3
Meltin pynt	202.8 °C
Bylin pynt	668.9 °C
Solubility in watter	21.6 g/100 mL
Thermochemistry
Std enthalpy o; combustionΔcHo298	5652 kJ/mol, 1351 kcal/mol, 16.5 kJ/g, 3.94 kcal/g
Hazards
NFPA 704	0 1 0
Flash pynt	357.8 °C
	Except whaur itherwise notit, data are gien for materials in thairstaundart state(at 25 °C [77 °F], 100 kPa).
	verify(whit is?)
	Infobox references

Lactoseis adisaccharide succarderived fraegalactoseanglucosethat is foond inmilk.Lactose maks up aroond 2~8% o milk (bi wicht), altho the amoont varies amang species an individuals. It is extractit frae sweet or sourwhey.The name comes fraelacorlactis,theLatinwird for milk, plus the -ose endin uised tae name succars. It haes a formula o C₁₂H₂₂O₁₁.

References

↑^a ^b ^cAnonymous. Sigma Aldrich. Lactose Product.https://www.sigmaaldrich.com/US/en/product/sial/17814St. Louis MO.
↑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 inethanolis 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"(PDF),Fluid Phase Equilibria,173(1): 121–34,doi:10.1016/S0378-3812(00)00388-5. ds

[Ald-1] Anonymous. Sigma Aldrich. Lactose Product.https://www.sigmaaldrich.com/US/en/product/sial/17814St. 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 inethanolis 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"(PDF),Fluid Phase Equilibria,173(1): 121–34,doi:10.1016/S0378-3812(00)00388-5. ds

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