L-valine is a human essential amino acid, it is used as a component of amino acid infusion in medicine, can be used as food additives, valine is one of the eight essential amino acids, can be used as raw material synthesis of isobutyraldehyde. Is a white crystalline or crystalline powder that dissolves in water and is almost insoluble in ethanol.
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|Appearance||White crystals or crystalline|
|Assay(%)||98.5 - 101.5|
|PH||5.5 - 7.0|
|Specific rotation(°)||+26.6 - +28.8|
|Residue on ignition(%)||0.10 Max|
|Loss on drying(%)||0.30 Max|
|Heavy metals(ppm)||15 Max|
|Organic volatile||Meets the requirements|
Pharmaceutical grade L-valine physicochemical properties:
1. Traits: white crystalline or crystalline powder, odorless, bitter taste
2. Density (g / mL, 25/4 ° C): 1.23
3. Melting point (oC): 295-300 (subl.) (Lit.)
4. Refractive index: 28 ° (C = 8, HCl)
5. Specific rotation (o): 28 o (c = 8, 6N HCl)
6. Solubility: soluble in water, solubility (g / L): 0 ℃ 83.4; 25 ℃ 88.5; 50 ℃ 96.2; 65 ℃ 102.4. Slightly soluble in ethanol, insoluble in ether.
Pharmaceutical Grade L-valine product use:
1.It is essential amino acids, as one of the ingredients of amino acid infusion in medicine, synthetic drugs can also be used as food additives.
2.Nutritional supplements. Can be combined with other essential amino acids amino acid infusion, integrated amino acid preparation. Beef cake add valine (1g, / kg), the product is sesame incense. For bread can also improve the flavor.
3.Amino acid drugs. Nutritional supplements can be used as amino acid infusion, the main ingredient of synthetic amino acid preparation. L-valine is one of the three branched-chain amino acids, is essential amino acids, can treat liver failure, central nervous system dysfunction.
4.For biochemical research, the preparation of tissue culture, medicine for amino acid nutrition medicine.
5.Preparation of tissue culture medium.