α-乳糖 USP, NF, Ph. Eur., JP

供应商: Acros Organics

Synonyms: β-D-Gal-(1→4)-α-D-Glc4-O-β-D-吡喃半乳糖基-α-D-葡萄糖乳糖

ACRO368892500EA 0 CNY
ACRO368892500 ACRO368890010
α-乳糖 USP, NF, Ph. Eur., JP
α-乳糖
分子式: C₁₂H₂₂O₁₁·H₂O
分子量: 360,32 g/mol
溶点: 219 °C (dec.)
存储条件: Ambient
MDL编号: MFCD00150747
CAS号: 5989-81-1

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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 270 nm A: ≤0.07
UV at 300 nm A: ≤0.07
UV (c=10, 1 cm cell)
UV at 400 nm A: ≤0.04
UV (1 % in water) 1 cm cell
UV at 210 nm A: ≤0.25
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 50 to 65 % (≤ 45 µm)
Particle size ≥90 % (≤ 100 µm)
Particle size ≥96 % (≤ 150 µm)
Particle size ≥99 % (≤ 250 µm)
Residue after ignition ≤0.1 %
Microbial contamination ≤100 CFU/g total aerobic microbial count
Microbial contamination ≤50 CFU/g total yeasts and moulds
Microbial contamination (Escherichia coli in 10 g) Absent
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)

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