1.07256

L-Phenylalanine

for biochemistry

• Synonym(s): L-Phenylalanine, Phe, 2-Amino-3-phenylpropionic acid
• Empirical Formula (Hill Notation): C₉H₁₁NO₂
• CAS Number: 63-91-2
• Molecular Weight: 165.19
• MDL number: MFCD00064227
• UNSPSC Code: 12352209
• EC Index Number: 200-568-1
• NACRES: NA.21

Properties

• vapor pressure: <1 Pa ( 25 °C)
• Quality Level: 100
• form: solid
• pH: 5.4-6.0 (20 °C, 10 g/L in H₂O)
• mp: 275-283 °C (decomposition)
• solubility: 27 g/L
• density: 1.34 g/cm³ at 20 °C
• bulk density: 580 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C9H11NO2/c10-8(9(11)12)6-7-4-2-1-3-5-7/h1-5,8H,6,10H2,(H,11,12)
• InChI key: COLNVLDHVKWLRT-UHFFFAOYSA-N

Description

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %
Identity (IR-spectrum): passes test
Identity (specific rotation): passes test
Appearance: white to almost white, crystalline powder
Appearance of solution (50 g/l, hydrochloric acid 1 mol/l): clear and colorless
Spec. rotation (α 20/D, 20 g/l, water, calc. on dried substance): -33,0 to -35,5
Chloride (Cl): ≤ 200 ppm
Sulfate (SO₄): ≤ 300 ppm
Al (Aluminium): ≤ 5 ppm
As (Arsenic): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 5 ppm
Na (Sodium): ≤ 50 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-positive substances (LC)(any ninhydrin-positive impurity): ≤ 0.2 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 %
Ninhydrin-positive substances (LC)(total impurities): ≤ 0.5 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable