L-arginine

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L-arginine
Posting date : Oct 19, 2010
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30-
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Quality standard: USP, AJI, FCC CAS No.: 74-79-3 Molecular Formula: C6H14N4O2 Molecular Weight: 174.2022 Melting Point: 223 - 224 CAS No: [74-79-3] Characteristics: White crystals or crystalline powder; Freely soluble in water. Quality Standards: USP, AJI. Item Specifications (USP) Specifications (AJI) Description White crystals or crystalline powder White crystals or crystalline powder Identification Infrared absorption spectrum Infrared absorption spectrum Specific rotation [a]D20° +26.3 ° - +27.7° +26.9 ° - +27.9° State of solution /Transmittance --- ≥ 98.0% Chloride (Cl) ≤ 0.05% ≤ 0.020% Ammonium (NH4) --- ≤ 0.02% Sulfate (SO4) ≤ 0.03% ≤ 0.020% Iron (Fe) ≤ 0.003% ≤ 10PPm Heavy metals (Pb) ≤ 0.0015% ≤ 10PPm Arsenic (As2O3) --- ≤ 1PPm Other amino acids --- Chromatographically not detectable Loss on drying ≤ 0.5% ≤ 0.5% Residue on ignition (sulfated) ≤ 0.3% ≤ 0.10% Assay 98.5-101.5% 99.0-101.0% pH --- 10.5-12.0 Organic volatile impurities Meets the requirements --- Packaging and Storage: In 25kgs fiber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature. Recommended limit: 2 year.

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