Alpha-D-Lactose monohydrate CAS:5989-81-1 Product introduction
Product name: Alpha-D-Lactose monohydrate
Appearance and Properties: White powder.
Molecular formula: C12H24O12
Molecular weight: 360.31
Alpha-D-Lactose monohydrate properties :
Melting point 219 ° C
Specific rotation[ α] D20+52.2～+52.8°
Boiling point 412.35 ° C (rough estimate)
Alpha-D-Lactose monohydrate Application：
1. It is used as an analytical reagent, chromatographic analysis reagent, and also for the preparation of biological culture medium
2. Characteristics of separating nitrolactose in GLC: a disaccharide separated from mammalian milk. It is about 4% – 5% in cow’s milk and 6.7% in human milk. After acid hydrolysis, D-glucose and D-galactose with equal molecular weight are obtained. It is reducing sugar, which can reduce Fehling solution. Crystallized in normal temperature aqueous solution α- Lactose, crystallized above 93 ℃ β- Lactose. α- Lactose is the common lactose. It has a faint sweet taste, usually with a molecule of crystal water. It is monoclinic crystal. When the temperature is 120 ℃, the crystal water will be lost and heated rapidly. The aqueous solution of [aChemicalbook] 20D-92.6 ° →+83.5 ° (10 minutes) →+69 ° (50 minutes) →+52.3 ° (22 hours). β- Lactose ratio α- Lactose is slightly sweet. White crystals. The melting point is 252 ℃. Its aqueous solution also has the phenomenon of variable rotation. [ α] 25D+34 ° (3 minutes) →+39 ° (6 minutes) →+46 ° (1 hour) → 52.3 ° (22 hours). β- Lactose can be converted into α- Lactose, which turns into β- Lactose. Xylene and its isomers are components of liquid and solid phases.
Chromatographic adsorbent. Bacterial culture medium.
Alpha-D-Lactose monohydrate Package：
Packaging: The product is packaged in double layers, the inner layer is plastic film, and the outer layer is poke with cardboard, which can be packaged into a net weight of 25kg to 200kg according to customer needs.
Alpha-D-Lactose monohydrate storage and transportation:
Store in a dry and ventilated place to prevent moisture deterioration.