1.00291

L-Glutamic acid

for biochemistry

• Synonym(s): L-Glutamic acid, L-α-Aminoglutaric acid, Glu, L-alpha-Aminoglutaric acid
• Empirical Formula (Hill Notation): C₅H₉NO₄
• CAS Number: 56-86-0
• Molecular Weight: 147.13
• MDL number: MFCD00002634
• UNSPSC Code: 12352209
• EC Index Number: 200-293-7
• NACRES: NA.21

Properties

• Quality Level: 100
• Assay: ≥99% substance (anhydrous) basis (alkalimetric)
• form: solid
• potency: >30000 mg/kg LD₅₀, oral (Rat)
• pH: 3.0-3.5 (25 °C, 8.6 g/L in H₂O)
• mp: 160 °C
• density: 1.54 g/cm³ at 20 °C
• bulk density: 460 kg/m³
• anion traces: chloride (Cl^-): ≤0.02%; sulfate (SO₄^2-): ≤0.01%
• cation traces: As: ≤0.0005%; Ca: ≤0.001%; Co: ≤0.0005%; Fe: ≤0.0005%; K: ≤0.0005%; Mg: ≤0.0005%; NH₄⁺: ≤0.01%; Na: ≤0.01%; Zn: ≤0.0005%; heavy metals (as Pb): ≤0.001%
• storage temp.: 2-30°C
• InChI: 1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)
• InChI key: WHUUTDBJXJRKMK-UHFFFAOYSA-N

Description

Analysis Note

Assay (alkalimetric, calculated on dried substance): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, crystalline powder or colorless crystals
Appearance of solution (0.5 mol/l, hydrochloric acid 1 mol/l): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): +31.5 to +32.5
UV-Absorption (260 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10
UV-Absorption (280 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10
Chloride (Cl): ≤ 0.02 %
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
NH₄ (Ammonium): ≤ 0.01 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable