It is the main raw material for making titanium sponge and titanium chloride.
Used as an important component of ethylene polymerization catalysts. It is used in the manufacture of pigments and titanium organic compounds. It is also a good solvent for dissolving various organic substances such as synthetic resins, rubber, and plastics.
It is the main raw material for making titanium sponge and titanium chloride.
Used as an important component of ethylene polymerization catalysts. It is used in the manufacture of pigments and titanium organic compounds. It is also a good solvent for dissolving various organic substances such as synthetic resins, rubber, and plastics.
Nisin, E234, CAS no.1414-45-5 is manufactured by fermentation process, used as safe natural food preservative. Nisin is used and applied in meat products, dairy products, canned seafood, drinks, fruit drinks, liquid eggs and egg products, condiments, winemaking, baked goods, convenience food, incense fragrances, cosmetics field, etc.. during production to extend shelf life by suppressing Gram-positive spoilage and pathogenic bacteria.
As an experienced Nisin manufacturer and supplier, we has been supplying and exporting Nisin 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.
Nisin Specification
ITEM STANDARD
Appearance Light brown to cream white powder
Potency (IU/ mg) 1000 Min
Loss on drying (%) 3 Max
pH (10% solution) 3.1- 3.6
Arsenic 1 mg/kg
Lead 1 mg/kg
Mercury 1 mg/kg
Total heavy metals ( as Pb) 10 mg/kg
Sodium chloride (%) 50 Min
Total plate count 10 cfu/g
Coliform bacteria 30 MPN/ 100g
E.coli/ 5g Negative
Salmonella/ 10g Negative
Dl Aspartic Acid, CAS No.617-45-8, is a mixture of L Aspartic Acid and D Aspartic Acid manufactured through fermentation, available as white powder. Dl Aspartic Acid is an amino acid widely used in nutritional supplements, nutrition enhancers, dietary supplements, health food additives, pharmaceutical raw materials, sports supplements, sports nutritional supplements, and bodybuilding supplements.
As an experienced Dl Aspartic Acid manufacturer and supplier, we has been supplying and exporting Dl Aspartic Acid 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 10000kg
Min Order 500kg
Origin China
Packaging Factory Packaging or Neutral
Certificate ISO, Kosher, Halal, BRC
CAS No. 1783-96-6
HS Code 292249
Specification Feed/Food Grade
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
Melting point 240-241 C(lit.)
Boiling point 217.15C (rough estimate)
density 1.2829 (rough estimate)
refractive index 1.4880 (estimate)
storage temp. Sealed in dry,Room Temperature
solubility Soluble in alcohol, acetone, ether
pka pK1:10.60 (25C)
form Powder
color White to off-white
Purpose:
It is used as an analytical reagent, REDOX indicator and chromatographic analysis reagent; Verification and determination of nickel Separate nickel from cobalt and other metals, and separate palladium from tin, gold, rhenium, iridium, etc. Photometric determination of cyanide, nickel, palladium, cobalt, iron (II), and rhenium (VII)
1, Quick details
Product name Nonylphenoxypoly(ethyleneoxy)ethanol
CAS 9016-45-9
Molecular Formula C19H32O3
Molecular weight 308.45558
Appearance Light yellow liquid
2.Useage for Nonylphenoxypoly(ethyleneoxy)ethanol
It is widely used in industrial cleaning, textile printing and dyeing, paper making, leather chemical industry, chemical fiber oil agent, oil field additives, pesticides, emulsion polymerization and other industrial fields.
3.Storage for Nonylphenoxypoly(ethyleneoxy)ethanol
Keep container in a dry and ventilated warehouse; keep away from sunshine;
avoid fire; avoid moisture .
Introduction:
4-hydroxyethyl piperazine ethosulfonic acid (HEPES) is an important hydrogen ion buffer, which has a good buffer ability in the pH range of 6.8 to 8.2, and can control a constant pH for a long time. Using a concentration of 10 ~ 50mmol/L, the general culture medium containing 20mmol/L 4-hydroxyethyl piperazine taurine can have a good buffer capacity, and has no toxic effect on cells.
Application:
HEPES (4-hydroxyethyl piperazinethesulfonic acid) is a non-ionic amphoteric buffer with high polarity, and is inert to a variety of chemical reagents and enzymes. It does not participate in and interfere with the process of biochemical reactions, and has no inhibitory effect on enzyme chemical reactions. Therefore, it can be used specifically for the research of proteins and enzymes that are highly volatile and ph-sensitive to organelles and very volatile.
Buffer solution preparation:
(1)hepes buffer can be directly added to the prepared culture medium according to the desired concentration, and then filtered to remove bacteria. 2.38 g HEPES was added to each 1000ml of culture medium, the pH was adjusted to 7.2 with lNNaOH after dissolution, and the bacteria were removed by filtration before use. At this time, the concentration of HEPES was 10mmol/L.
(2) 100x storage solution (lmol/L) could also be prepared. Before use, 99ml culture solution was added to lml storage solution, and the final concentration was 10mmol/L. lmol/L (100x) hepes buffer was prepared as follows: 23.8gHEPES was dissolved in 90ml double distilled water, the pH was adjusted to 7.5-8.0 with lNNaOH, and then the water was fixed to 100ml, filtered to remove bacteria, divided into vials (2ml/ bottle), and stored at 4�ºC or -20�ºC.
Purpose:
1.Biological buffer; Reaction buffer, prehybridization buffer and hybridization buffer for isolation and analysis of RNA nuclear fraction; For RNA with T4RNA
2.Molecular biology grade is used for RNA3' -end labeling with T4 RNA ligase
3.Cell-cell adhesion, short-term cell aggregation culture, cleaning of tissue and cell buffer
