L-ISOLEUCINE FOR BIOCHEMISTRY

Code: 1053620025 D2-231

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %Identity (IR-spectrum): passes testAppearance: white to almost white, crystallin...


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€58.60 EACH
€72.08 inc. VAT

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %Identity (IR-spectrum): passes testAppearance: white to almost white, crystalline powder or flakesAppearance of solution (1 mol/l, hydrochloric acid 1 mol/l): clear and colorlessSpec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): +36.2 to +37.2UV-Absorption (260 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10UV-Absorption (280 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10Chloride (Cl): ≤ 0.02 %Sulfate (SO4): ≤ 0.01 %Heavy metals (as Pb): ≤ 0.001 %As (Arsenic): ≤ 0.0005 Ê (Calcium): ≤ 0.001 %Co (Cobalt): ≤ 0.0005 þ (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 %

Packaging

10 kg in Plastic drum

25, 100, 500 g in Plastic bottle

bulk density470 kg/m3
formsolid
InChI keyAGPKZVBTJJNPAG-WHFBIAKZSA-N
InChI1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1
mp279-280 °C (decomposition)
pH5.5-6.5 (20 °C, 40 g/L in H2O)
Quality Level100
solubility40 g/L
storage temp.2-30°C
Cas Number73-32-5
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