Lactose Monohydrate CAS#64044-51-5

Lactose Monohydrate CAS#64044-51-5

Lactose Monohydrate is a crystalline carbohydrate composed of glucose and galactose, with one molecule of water incorporated into its crystal structure. Derived primarily from milk, this ingredient is widely valued for its versatility in pharmaceutical manufacturing, food processing, and laboratory applications. It typically appears as a white or almost white crystalline powder with a mildly sweet taste and good stability under suitable storage conditions. In pharmaceutical formulations, lactose monohydrate is frequently used as a filler and diluent to provide suitable bulk, improve powder handling, and support consistent tablet and capsule production. Depending on its particle size and grade, it can be incorporated into both direct-compression and wet-granulation processes. In the food industry, it serves as a functional carbohydrate ingredient in selected dairy products, nutritional preparations, and powdered formulations. Its performance depends on the material's purity, particle characteristics, and intended application. To preserve product quality, lactose monohydrate should be stored in a tightly sealed container in a cool, dry environment and protected from excessive moisture and contamination.

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Lactose Monohydrate CAS#64044-51-5

Lactose monohydrate is a type of lactose. D-Lactose is composed of D-galactose and D-glucose. D-Lactose monohydrate can be used as sweetener or excipient.

Melting point ~215 °C (dec.)
density 1.525
storage temp. room temp
solubility H2O: 0.1 g/mL, clear, colorless
form Crystalline
Specific Gravity1.525
color White
PH3.5-6.0 (25℃, 0.5M in H2O)
Optical Rotation[α]22/D +52.4°, c = 4.5 in H2O
Water Solubility Soluble in water (warm) (0.1 g/mL), and ethanol (very slightly soluble). Insoluble in chloroform, and ether.
λmaxλ: 260 nm Amax: 0.02
λ: 280 nm Amax: 0.02
Merck 14,5343
BRN 3768231
Stability:Stable. Incompatible with strong oxidizing agents.
InChI1S/C12H22O11.H2O/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12;/h1,4-12,14-21H,2-3H2;1H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-;/m0./s1
InChIKeyHBDJFVFTHLOSDW-XBLONOLSSA-N
SMILESO.OC[C@@H](O)[C@@H](O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=O
LogP-3.409 (est)
CAS DataBase Reference64044-51-5(CAS DataBase Reference)
NIST Chemistry ReferenceLactose monohydrate(64044-51-5)
EPA Substance Registry SystemLactose monohydrate (64044-51-5)
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36-24/25
WGK Germany 3
RTECS OD9625000
F 3
TSCA Yes
HS Code 17021900
Storage Class11 - Combustible Solids

Inventory 2-3 working days New production 7-10 working days

Lactose Monohydrate CAS No. 64044-51-5

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