L-Serine powder, CAS No.56-45-1, non essential amino acid manufactured via fermentation from carbohydrate sources, free of materials of animal origin. As an experienced L-Serine manufacturer and supplier, we has been supplying and exporting L-Serine for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Product Description Categories Amino Acids Qty in 20â??FCL 18000kg Min Order 500kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC CAS No. 56-45-1 HS Code 292250 Specification Feed/Food Grade L-Serine powder Specification ITEMS STANDARD Appearance A white or almost white, crystalline powder or colourless crystals. Solubility Freely soluble in water,practically insoluble in alcohol. Identification test (A,B) Up to the STANDARD Appearance of solution Clarity of solution:5% water solution should be clear Colour of solution:5% water solution should be not more intensively coloured than reference solution BY6 Specific optical rotation +14.0�° to +16.0�° Assay 98.5-101.0% Chlorides 200ppm max Sulphates 300ppm max Ammonium 200ppm max Iron 10ppm max Heavy metals 10ppm max Loss on drying 0.5% max Sulphated ash 0.1% max Ninhydrin-positive substances (TLC) Up to the STANDARD