1.01007

L-Alanine

for biochemistry

• Synonym(s): L-Alanine, 2-Aminopropionic acid, Ala
• Empirical Formula (Hill Notation): C₃H₇NO₂
• CAS Number: 56-41-7
• Molecular Weight: 89.09
• UNSPSC Code: 12352209
• EC Index Number: 200-273-8
• NACRES: NA.21

Properties

• Quality Level: 100
• form: solid
• pH: 5.5-6.5 (20 °C, 100 g/L in H₂O)
• mp: 295-297 °C (decomposition)
• solubility: 166.5 g/L
• density: 1.40 g/cm³ at 20 °C
• bulk density: 660 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6)
• InChI key: QNAYBMKLOCPYGJ-UHFFFAOYSA-N

Description

General description

for biochemistry

Application

L-Alanine for biochemistry. CAS 56-41-7, pH 5.5 - 6.5 (100 g/l, H₂O, 20 °C).

Analysis Note

Assay (perchloric acid titration, calculated on dried substance)99.0 - 101.0 %Identity (IR-spectrum)passes testIdentity (specific rotation)passes testAppearancewhite to almost white crystalline powder or colorless crystalsAppearance of solution (25 g/l, water)clear and not more intense in color than reference solution BY₆Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 250 g/l, calc. on dried substance)+13.5 to +15.5Chloride (Cl)≤ 200 ppmSulfate (SO₄)≤ 100 ppmAs (Arsenic)≤ 5 ppmCa (Calcium)≤ 50 ppmCo (Cobalt)≤ 5 ppmFe (Iron)≤ 5 ppmK (Potassium)≤ 5 ppmMg (Magnesium)≤ 5 ppmNa (Sodium)≤ 50 ppmPb (Lead)≤ 10 ppmZn (Zinc)≤ 5 ppmNinhydrin-positive substances (LC)(any ninhydrin-positive impurity)≤ 0.1 %Ninhydrin-positive substances (LC) (ammonium (570 nm))≤ 0.02 %Ninhydrin-positive substances (LC)(total impurities)≤ 0.5 %Loss on drying (105 °C; 3 h)
≤ 0.2 %≤ 0.2 %

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable