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 ;
PubChem CID	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; combustion ΔcHo298	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 thair staundart state (at 25 °C [77 °F], 100 kPa).
	verify (whit is ?)
	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

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

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