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

现在订购

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...

更多 About VWR