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L-Carnitine base
Synonyms: 3-Hydroxy-4-(trimethylammonio)butanoate; Vitamin BT; L(-)-Carnitine
CAS NO: 541-15-1
Molecular weight: 161.2
EC NO: 208-768-0
Molecular formula: C7H15NO3
Packing: 25KG/ Fiber drum / carton drum
Details: melting point: 208-212°C specific rotation: -31° (c=10, H2O) water solubility: 2500 g/L (20°C)
Uses: drugs, dietary supplements, functional drink, feed additive
Properties: white crystal or crystalline powder with slight special odor; high hygroscopicity. Easily soluble in water, ethanol and alkaloid solution; almost insoluble in acetone or ethyl acetate.
Quality Standard: USP , EP , GB
1. USP
Identification: chemial or IR method
Specific rotation: -29.0°~ -32.0°
pH-value: 5.5 ~ 9.5
Moisture: ≤ 4.0%
Residue on ignition: ≤ 0.5%
Cyanide: -
Chloride: ≤ 0.4%
Sulphate: -
Sodium: ≤ 0.1%
Potassium: ≤ 0.2%
Heavy metal: ≤ 20ppm
Arsenic: ≤ 2ppm
Solution clarity: -
Related substances: -
Residual acetone: -
Assay: 100±3%
2. EP
Identification: chemial or IR method
Specific rotation: -29.0°~ -32.0°
pH-value: 6.5 ~ 8.5
Moisture: ≤ 1.0%
Residue on ignition: ≤ 0.1%
Cyanide: -
Chloride: ≤ 200ppm
Sulphate: ≤ 300ppm
Sodium: -
Potassium: -
Heavy metal: ≤ 10ppm
Arsenic: -
Solution clarity: colorless transparent
Related substances: impurity A ≤ 0.5%
other impurity ≤ 0.1%
Residual acetone: -
Assay: 100±2%
3. GB
Identification: chemial or IR method
Specific rotation: -29.0° ~ -32.0
pH-value: 5.5 ~ 9.5
Moisture: ≤ 4.0%
Residue on ignition: ≤ 0.5%
Cyanide: should not be found
Chloride: ≤ 0.4%
Sulphate: -
Sodium: ≤ 0.1%
Potassium: ≤ 0.2%
Heavy metal: ≤ 20 ppm
Arsenic: ≤ 2 ppm
Solution clarity: -
Related substances: -
Residual acetone: ≤ 0.1%
Assay: 100±3%