Amino Acids

L-LEUCINE

CAS No.: 61-90-5
Molecular Formula: C₆H₁₃NO₂
Molecular Weight: 131.17 g/mol

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1. DESCRIPTION

• Appearance: White or almost white crystalline powder/flakes
• Solubility:
  • 1 g dissolves in ~40 mL water
  • 1 g dissolves in ~100 mL glacial acetic acid
  • Sparingly soluble in alcohol
  • Soluble in dilute HCl, alkali hydroxides, and carbonates

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2. SPECIFICATIONS

Parameter	Standard Value
Appearance of Solution	Clear; ≤ reference solution BY6
Assay	98.5%–101.0%
Specific Optical Rotation	+14.5° to +16.5°
Ninhydrin-Positive Impurities	≤0.5% (any single impurity)
Chloride (Cl)	≤0.02%
Sulfate (SO₄)	≤0.03%
Ammonium (NH₄)	≤0.02%
Iron (Fe)	≤10 ppm
Heavy Metals	≤10 ppm
Lead (Pb)	≤5 ppm
Loss on Drying	≤0.5%
Residue on Ignition	≤0.1%

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3. APPLICATIONS

• Nutritional Supplement:
  • Muscle repair (with L-Isoleucine & L-Valine).
  • Blood sugar control and energy provision.
• Medical Uses:
  • Post-surgical recovery (bone, skin, muscle healing).
  • Prevents muscle loss in athletes/bodybuilders.
• Industrial:
  • Amino acid infusions, hypoglycemic agents, plant growth promoters.

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4. PACKAGING & STORAGE

• Packaging: 25 kg/drum (or custom requirements).
• Storage: Cool, dry place; protect from light.

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5. SAFETY & REGULATORY

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