1.05362
L-Isoleucine
for biochemistry
Synonym(s):
L-Isoleucine, iso-Leucine, Ile
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About This Item
Empirical Formula (Hill Notation):
C6H13NO2
CAS Number:
Molecular Weight:
131.17
MDL number:
UNSPSC Code:
12352209
EC Index Number:
200-798-2
NACRES:
NA.21
Recommended Products
Quality Level
form
solid
pH
5.5-6.5 (20 °C, 40 g/L in H2O)
mp
279-280 °C (decomposition)
solubility
40 g/L
bulk density
470 kg/m3
storage temp.
2-30°C
InChI
1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1
InChI key
AGPKZVBTJJNPAG-WHFBIAKZSA-N
Analysis Note
Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, crystalline powder or flakes
Appearance of solution (1 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): +36.2 to +37.2
UV-Absorption (260 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10
UV-Absorption (280 nm, 1 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): ≤ 0.005 %
NH₄ (Ammonium): ≤ 0.01 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.5 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, crystalline powder or flakes
Appearance of solution (1 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): +36.2 to +37.2
UV-Absorption (260 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10
UV-Absorption (280 nm, 1 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): ≤ 0.005 %
NH₄ (Ammonium): ≤ 0.01 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.5 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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