Specification: Items Standard Appearance Faintly yellowish to light yellow crystals. Solubility Sparingly soluble in water; slightly soluble in acetic acid; very slightly soluble in dehydrated alcohol; practically insoluble in aceton, in ethylacetate. A.IR IR spectrum of sample conforms to that of reference standard. B.HPLC The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay. C.Reaction of chlorides A solution of it responds to the tests for Chloride ASSAY (on anhydrous basis) 98.0%~102.0% of C17H18FN3O3�·HCL Residue on ignition NMT 0.1% Fluoroquinolonic acid (263nm) NMT 0.2% Ciprofloxacin Analog (278nm) NMT 0.2% Any other Individual impurity (278nm) NMT 0.2% Total impurities (278nm) NMT 0.5% pH� 3.0 to 4.5 Water 4.7% to 6.7% Ethan NMT 4000ppm
Aluminum oxide Alumina powder for Electric vacuum tube shell ceramic Al2O3 item value Classification ALUMINA CAS No. 1344-28-1 Other Names Alumina MF Al2O3 EINECS No. 215-691-6 Grade Standard Electron Grade, Industrial Grade, Reagent Grade Purity 99.5% Appearance White powder Application electronic ceramics Color White Grade Industrail Grade Density 3.5 g/cm3 Melting point 2054 Boiling Point 2980 Molecular Weight 101.96 Shape Ionische Water Solubility Hard Packing 25 Kg Pp Bag or plastic barrel Sample Availiable
Aluminum oxide Alumina powder for Electric vacuum tube shell ceramic Al2O3 item value Classification ALUMINA CAS No. 1344-28-1 Other Names Alumina MF Al2O3 EINECS No. 215-691-6 Grade Standard Electron Grade, Industrial Grade, Reagent Grade Purity 99.5% Appearance White powder Application electronic ceramics Color White Grade Industrail Grade Density 3.5 g/cm3 Melting point 2054 Boiling Point 2980 Molecular Weight 101.96 Shape Ionische Water Solubility Hard Packing 25 Kg Pp Bag or plastic barrel Sample Availiable
Product Name Sodium Ascorbate Type Food Additives Origin China CAS No 134032 AUCO No 239 Packing 25kg carton Items Standard Characteristics White or yellowish crystalline powder Identification AThe infrared spectrum of the sample compares qualitatively to the infrared spectrum of the standard AIdentify BQualify BThe solution reduces alkaline cupric tartrate TS slowly at room temperature but more readily upon heating A solution1 in 50 responds to the tests of Sodium 191 Specific Optical Rotation 103 108 PH10 aqueous solution 7080 Loss on Drying 025 Heavy Metals 10ppm Arsenic 3ppm Lead 2ppm Assay 990 1010 Organic Volatile Impurities Pass
Product Name: Sodium Ascorbate "Type: Food Additives Origin: China CAS No.: 134-03-2 AUCO No.: 239 Packing: 25kg carton" Items Standard Characteristics White or yellowish crystalline powder Identification A:The infrared spectrum of the sample compares qualitatively to the infrared spectrum of the standard A:Identify B:Qualify B:The solution reduces alkaline cupric tartrate TS slowly at room temperature, but more readily upon heating "A solution(1 in 50) responds to the tests of Sodium " Specific Optical Rotation +103 °~ +108 ° PH(10% aqueous solution) 7.0-8.0 Loss on Drying 0.25% Heavy Metals 10ppm Arsenic 3ppm Lead 2ppm Assay 99.0%- 101.0% Organic Volatile Impurities Pass
Product Name: Sodium Lauroyl Sarcosinate(LS-30) "Type: Cosmetic raw materials Origin: China CAS No.: 137-16-6 AUCO No.: 509 Packing: 200kg drum" Items Standard Appearance Colorless to slightly yellowish liquid OdorConsistent with the standard sample, no odor Hazen 50 Solid content,% 29.0-31.0 pH(10% water solution) 7.0-8.0 Sodium chloride content,% 0.2
Product Name: Disodium Laureth Sulfosuccinate(MES) Type: Cosmetic raw materials Origin: China CAS No.: 40754-59-4 AUCO No.: 416 Packing: 200kg drum Items Standard Appearance 25 Colorless to light yellow transparent liquid with no visible impurities Odor 25 Consistent with the standard sample, no odor Hazen 50 Solid content,% 31.0-35.0 pH(10% water solution) 5.0-7.0 Active substance content,% 0.96-1.06 Sodium sulfate ,% 0.2
Product Name: Disodium Laureth Sulfosuccinate(MES) Type: Cosmetic raw materials Origin: China CAS No.: 40754-59-4 AUCO No.: 416 Packing: 200kg drum Items Standard Appearance 25 Colorless to light yellow transparent liquid with no visible impurities Odor 25 Consistent with the standard sample, no odor Hazen 50 Solid content,% 31.0-35.0 pH(10% water solution) 5.0-7.0 Active substance content,% 0.96-1.06 Sodium sulfate ,% 0.2
Product Name: Sodium Methyl Cocoyl Taurate (SMCT) Type: Cosmetic raw materials Origin: China CAS No.: 12765-39-8 AUCO No.: 536 Packing: 200kg drum Items Standard Appearance 25 Colorless to slightly yellowish liquid Odor 25 Consistent with the standard sample, no odor Hazen 100 Solid content,% 35.0-37.0 pH(10% water solution) 6.5-7.5 Sodium chloride content ,% 4.0-6.5
Product Name: Potassium Cocoyl Glycinate(GCK-30) Type: Cosmetic raw materials Origin: China CAS No.: 301341-58-2 AUCO No.: 403 Packing: 200kg drum Items Standard Appearance 25 Colorless to slightly yellowish liquid Odor 25 Consistent with the standard sample, no odor Hazen 80 Solid content,% 29.0-31.0 pH(10% water solution) 8.0-8.7 Sodium chloride content ,%0.5
Product Name: Disodium Laureth Sulfosuccinate(MES) Type: Cosmetic raw materials Origin: China CAS No.: 40754-59-4 AUCO No.: 416 Packing: 200kg drum Items Standard Appearance 25 Colorless to light yellow transparent liquid with no visible impurities Odor 25 Consistent with the standard sample, no odor Hazen 50 Solid content,% 31.0-35.0 pH(10% water solution) 5.0-7.0 Active substance content,% 0.96-1.06 Sodium sulfate ,% 0.2
Product Name: Lactose "Type: Food Additives CAS No.: 64044-51-5 AUCO No.: 919 Packing: 25kg bag" Items Standard Color Take an appropriate amount of sample in the white shallow dish on the natural light line, observe, white to light yellow. Taste smell Take an appropriate amount of sample in the white shallow dish in natural light, observe, slightly sweet and odorless. State of organization Take an appropriate amount of the sample in the white shallow disk in natural light, observe, crystal or powder crystal. Lactose a (In the dry basis)/(g/100g) A lactose content according to (100- water-ash)/(100-water) calculation. 9.0 Water/(g/100g) 6.0 (GB 5009.3-2010 Karl fisher method) Ash/(g/100g) 0.3 (GB 5009.4) PH/(10% aqueous solution) Take 10g of lactose in 100ml beaker, add distilled water into 10% water solution,with a pH measuring the value of pH. 4.5-7.0. Conclusion : The quality standard test of this food lactose is in accordance with the regulations.
Product Name: Lactose "Type: Food Additives Origin: China CAS No.: 63-42-3 AUCO No.: 919 Packing: 25kg bag" Items Standard Identification A The infrared absorption spectrum of the sample is concordant with that of the standard. Identification B The principal spot obtained from the Test solution corresponds in appearance and RF value to that obtained from Standard solution A The test is not valid unless the chromatogram obtained with Standard solution B shows four clearly discernible spots, disregarding any spots at the origin. Identification C A red color develops. Specific optical rotation +54.4~+55.9, calculate on the anhydrous basis Acidity or alkalinity Add 0.3ml of phenolphthalein TS: the solution is colorless, and not more than 0.4 ml of 0.1 N sodium hydroxide is required to produce a red color. Water Not more than 1.0% Residue on ignition Not more than 0.1% Heavy metals The limit is 5µg per g. Protein and light-absorbing impurities The absorbance divided by the path length in centimeters is not more than 0.25 in the range of 210 to 220nm and is not more than 0.07 in the range of 270 to 300nm. TPC
Product Name: Lactose "Type: Food Additives Origin: China CAS No.: 63-42-3 AUCO No.: 919 Packing: 25kg bag" Items Standard Identification A The infrared absorption spectrum of the sample is concordant with that of the standard. Identification B The principal spot obtained from the Test solution corresponds in appearance and RF value to that obtained from Standard solution A The test is not valid unless the chromatogram obtained with Standard solution B shows four clearly discernible spots, disregarding any spots at the origin. Identification C A red color develops. Specific optical rotation +54.4~+55.9, calculate on the anhydrous basis Acidity or alkalinity Add 0.3ml of phenolphthalein TS: the solution is colorless, and not more than 0.4 ml of 0.1 N sodium hydroxide is required to produce a red color. Water Not more than 1.0% Residue on ignition Not more than 0.1% Heavy metals The limit is 5�µg per g. Protein and light-absorbing impurities The absorbance divided by the path length in centimeters is not more than 0.25 in the range of 210 to 220nm and is not more than 0.07 in the range of 270 to 300nm. TPC
Product Name: Dextrose Anhydrous "Type: Food/Feed Additives Origin: China CAS No.: 50-99-7 AUCO No.: 517 Packing: 25kg bag" Items Standard Appearance and solubility White or almost white,crystalline powder.It has a sweet taste.Freely soluble in water,sparingly soluble in ethanol(96%) Identification Positive Appearance of solution The solution is clar and not more intensely colored than reference solution BY7 Acidity or alkalinity 6.0g sample 0.1M NaOH 0.15ml Specific optical rotation 52.5 53.3 Foreign sugars,soluble starch,dextrins Qualified Sulphites Maximum 15ppm SO2 Chloride Maximum 125ppm Sulphates Maximum 200ppm Arsenic Maximum 1ppm Barium Any opalescence in the solution is not more intense than in the standard Calcium Maximum 200ppm Lead Maximum 0.5ppm Water Maximum 1.0% Sulphated ash Maximum 0.1% Endotoxin
Product Name: Dextrose Anhydrous "Type: Food/Feed Additives Origin: China CAS No.: 50-99-7 AUCO No.: 517 Packing: 25kg bag" Items Standard Appearance and solubility White or almost white,crystalline powder.It has a sweet taste.Freely soluble in water,sparingly soluble in ethanol(96%) Identification Positive Appearance of solution The solution is clar and not more intensely colored than reference solution BY7 Acidity or alkalinity 6.0g sample 0.1M NaOH0.15ml Specific optical rotation 52.5 53.3 Foreign sugars,soluble starch,dextrins Qualified Sulphites Maximum 15ppm SO2 Chloride Maximum 125ppm Sulphates Maximum 200ppm Arsenic Maximum 1ppm Barium Any opalescence in the solution is not more intense than in the standard Calcium Maximum 200ppm Lead Maximum 0.5ppm Water Maximum 1.0% Sulphated ash Maximum 0.1% Endotoxin
Items Standard Appearance Dark red crystal or crystalline powder, with no smell and no taste; hygroscopicity. Identification A A361nm/A278nm:1.70-1.90 A361nm/A550nm:3.15-3.40 Identification B The retention time of major peak of the sample should be consistent with the standard solution. Identification C Positive Infrared Spectrum Infrared spectrum of the sample should be consistent with the reforence map. Loss on drying 10.0% Assay 97.0%~102.0% 78-lactocyanocobalamin1.0% 50-carboxyeyanocobalamin 0.5% 34-methylcyanocobalamin 2.0% 32-carboxyeyanocobalamin 1.0% 8-Epi-cyanocobalamin 1.0% Any other unidentified 0.5% Total impurities 3.0% Total aerobic bacteria count 1000cfu/g Molds Yeasts 100cfu/g E coli Negative Residual solvents Acetone 0.5%
Product Name: Cocamidopropyl Betaine(CAB) Type: Cosmetic raw materials Origin: China CAS No.: 61789-40-0 AUCO No.: 563 Packing: 200kg drum Items Standard Appearance 25 Colorless to light yellow transparent liquid with no visible impurities Odor 25 Consistent with the standard sample, no odor Hazen 100 Solid content,% 34.0-36.0 Sodium chloride content ,% 7.0-11.0 Free amine content,% 0.5 Chloroacetic acid,mg/kg 20.0 Hydroxyacetic acid,% 0.5 pH(5% water solution) 4.0-7.0
Since the outbreak of the epidemic, relevant diagnostic reagent R&D and production companies have introduced RT-PCR nucleic acid detection kits for the first time. By collecting oropharyngeal swab or nasopharyngeal swab samples, the RNA of the virus is extracted and purified for qualitative or quantitative detection. "2019 -New Coronavirus". The sample collection and storage container used in this method is a "disposable virus sampling tube". The new coronavirus nucleic acid detection, disposable virus sampling tube can be said to be indispensable. Next, Desheng intends to introduce the composition and use of the virus sampling tube. About the composition and manufacturing of the virus sampling tube: 1. Sampling swab: The sampling swab directly contacts the sampling site, and the material of the sampling head is closely related to the subsequent detection. 2. Virus preservation solution: There are two main types of virus preservation solution widely used in the market. One is the improved virus maintenance solution based on the delivery medium, and the other is the improved preservation solution of nucleic acid extraction lysis solution. 3. Preservation tube: The material of the preservation tube should be selected carefully. There are data indicating that Polypropylene is related to the adsorption of nucleic acids, especially when the ion concentration of high tension is high, polyethylene plastic (Polyethylene) is better than polypropylene (Polypropylene). Easy to grasp DNA/RNA. About the use of virus sampling tube: The virus sampling tube sampling is mainly divided into oropharyngeal sampling and nasopharyngeal sampling: 1. Oropharyngeal sampling: first press the tongue with a tongue depressor, and then put the sampling swab head into the throat to wipe the bilateral pharyngeal tonsils and back wall of the pharynx, wipe the back wall of the pharynx with light force, avoid touching the tongue unit. 2. Nasopharyngeal sampling: use a swab to measure the distance from the tip of the nose to the earlobe and mark it with your fingers. Insert the sampling swab into the nasal cavity in the direction perpendicular to the nose (face). The distance of the swab should be at least half the length of the earlobe to the tip of the nose. Leave the swab in the nose for 15-30 seconds, gently rotate it 3-5 times, and withdraw the swab. It is not difficult to see from the method of use that whether it is an oropharyngeal swab or a nasopharyngeal swab, sampling is a technical task, which is difficult and easy to contaminate. The quality of the collected sample is directly related to the subsequent testing. If the viral load of the collected sample is Low, easy to cause false negatives, difficult to diagnose.
Free sample poly aluminium chloride Coagulant price cas 1327-41-9 pac Yellow White Powder for drinking water Usage: Paper Chemicals, Surfactants, Water Treatment Chemicals Supply Ability 90000 Ton/Tons per Year Packaging Details 25 Kg PP bags with PE inner liner or as your requirements is available Specification Index Liquid Solid Al2O3 % 10.0-15.0 29 Basicity % 40.0-90.0 40.0-90.0 Density (20)(g/CM) 1.12 - Insoluble Substance % 0.1 0.3 PH(1% w/v Liquid Solution) 3.5-5.0 3.5-5.0 Pb % 0.001 As % 0.0002 Cd % 0.0002 Hg % 0.00001 CR % 0.0005
