α-乳糖 USP, NF, JP, Ph. Eur.
供应商: Thermo Fisher Scientific
Synonyms:
4-O-β-D-吡喃半乳糖基-α-D-葡萄糖, 乳糖, β-D-Gal-(1→4)-α-D-Glc
368892500
368890010
ACRO368892500EA
0
CNY
ACRO368892500
ACRO368890010
α-乳糖 USP, NF, JP, Ph. Eur.
α-乳糖
分子式:
C₁₂H₂₂O₁₁·H₂O 溶点: 219 °C (dec.) 存储条件: Ambient |
MDL编号:
MFCD00150747 CAS号: 5989-81-1 |
产品技术规格
Appearance | White to almost white Amorphous powder, crystals or crystalline powder |
Water | 4.5 to 5.5 % |
Loss on drying | ≤0.5 % (80°C, 2 h) |
Heavy metals | ≤5 ppm |
UV | at 220 nm A: ≤0.25 |
Appearance of solution | Clear and not more intensely colored than ref. BY7 |
Clarity and color of solution | Clear and nearly colorless |
Identification | Conform USP/NF, EP, JP |
Particle size | ≥99 % (≤ 250 µm) |
Residue after ignition | ≤0.1 % |
Microbial contamination | (Salmonellae in 100 g) Absent |
Acidity/alkalinity | ≤0.4 ml/6g (ml 0.1N NaOH/6g) |
Specific optical rotation | +54.4° to +55.9° (20°C, 589 nm) (c=10, H2O/NH3) (After 30 min., on anhydrous substance) |
Learn more

About VWR
Avantor is a vertically integrated, global supplier of discovery-to-delivery solutions for...