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L-Carnitine forms white crystals or a white crystalline hygroscopic powder.It has a slight characteristic odor. L-Carnitine is extremely hygroscopic and even deliquescent and it can liquefy on exposure to air. L-Carnitine melts above 200oC under decomposition. L-Carnitine is highly soluble in water,in alcohol,in alkaline solutions,and in dilute mineral acids.It is practically insoluble in acetone or ethyl acetate.| Identification | IR or Chemical Method | | Specific rotation | -29.0 deg.---32.0 deg. | | pH | 5.5-9.5 | | Water conten | <4.0% | | Residue on ignition | <0.2% | | Chloride | <0.4% | | Sodium | <0.2% | | Potassium | <0.2% | | Heavy metal | <20ppm | | Arsenic | <2ppm | | Assay | 97.0-103.0% |
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