This calcite mainly used for optical lens or used for high technical instruments, used for prism manufacturing
DL-Methionine, CAS No.59-51-8, is a essential amino acid manufactured by chemical synthesis. L-methionine is manufactured by optical resolution of the DL-Methionine. Function and uses: used in hepatic therapeutics and drugs for preventing hepatic impairments. L-methionine is used as a nutritive supplement in infant milk preparations, health foods and as a component of sports supplements. As an experienced DL-Methionine manufacturer and supplier, we has been supplying and exporting DL-Methionine 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. DL-Methionine Food Feed grade Specification ITEM STANDARD Appearance White Crystalline Powder Assay (on dry matter) % 98.5-101.5 Clarity of Solution Clear, colorless Transmittance % 98.0 PH Value(1g/100ml in water) 5.4-6.1 Chloride(As Cl) % 0.05 Heavy Metals(As Pb) % 0.002 Lead (As Pb) % 0.001 Arsenic (As AS) % 0.00015 Sulfate(SO4) % 0.02 Ammonium( As NH4) % 0.01 Loss on drying % 0.5 Residue on ignition(as sulphate ash) % 0.1 Organic Volatile Impurities Meets the requirement
L-Lysine, CAS No.56-87-1, is a amino acid manufactured through fermentation, available as yellow powder. Feed Grade L-Lysine used as nutrition supplements in animal feed. It is also available as L-Lysine Monohydrochloride and L-Lysine Sulfate. L-Lysine is an important intermediate in manufacturing of Epsilon-Poly-L-Lysine. L-Lysine Monohydrochloride is one of the eight essential amino acids in the human body. It appears as a white or light brown crystalline powder. As an experienced L-Lysine manufacturer and supplier, we has been supplying and exporting L-Lysine 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. L-Lysine Specification ITEMS STANDARD Appearance Brown powder Content 98.5% Specific Optical Rotation +18.0~+21.5 Loss on drying 1.0% Residue on Ignition 0.3% Heavy Metals (as Pb) 0.003% Ammonium Salt 0.04% Arsenic 0.0002% PH(10g/dl) 5.0~6.0
Sodium Ascorbate, E301, CAS no.134-03-2, is the sodium salt of Ascorbic Acid and manufacturing process from Ascorbic Acid. It is a white or light yellow crystalline powder, used as nutrition fortifier, antioxidant and preservative in food products such as in meat products, dairy products, and beverages. Sodium ascorbate is widely replaced by sodium erythorbate which has stronger antioxidant ability and will not bring acidic taste. As an experienced Sodium Ascorbate manufacturer and supplier, we has been supplying and exporting Sodium Ascorbate 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. Sodium Ascorbate food grade Specification ITEM STANDARD Appearance White to slightly yellow cr ystalline powder Identification Positive Assay (as C 6H 7NaO 6) 99.0 101.0% Specific optical rotation +103 +106 Clarity of solution Clear pH (10%, W/V ) 7.0 8.0 Loss on drying 0.25% Sulphate (mg/kg) 150 Total heavy metals 0.001% Lead 0.0002% Arsenic 0.0003% Mercury 0.0001% Zinc 0.0025% Copper 0.0005% Residual Solvents (as Menthanol) 0.3% Total plate count (cfu/g) 1000 Yeasts & molds (cuf/g) 100 E.coli/ g Negative Salmonella/ 25g Negative Staphylococcus aureus/ 25g Negative
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
Manufacturer of a wide range of products which include Calcite Powder 100 Mesh, Calcite Powder 200 Mesh, Calcite Powder 250 Mesh, Calcite Powder 300 Mesh, Calcite Powder 400 Mesh and Calcite Powder 500 Mesh.
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Buyer: Barytes powder, calcined clay, food chemicals
High purity magnesium fluoride(MgF2) Optical grade magnesium fluoride(MgF2) Magnesium Fluoride 99.5%min
Lithium metaphosphate optical grade Lithium metaphosphate for optical glass Lithium metaphosphate optical grade for filter glass Lithium metaphosphate optical grade for laser glass