Browse 961 Chemical Products and Raw Materials
Wheat Gluten
Wheat gluten is a food made from gluten, the main protein ofwheat. It is made by washing wheat flour dough with water until all the starch granules have been removed, leaving the sticky insoluble gluten as an elastic mass which is then cooked before being eaten.
White Phosphorus
White phosphorus is a simple substance of phosphorus, with the chemical formula P4. The appearance is white or light yellow translucent solid. It is soft and brittle when cold, and the light color becomes darker. Exposure to air produces green phosphorescence and white smoke in the dark. It ignites at about 40 ℃ in wet air and slightly higher in dry air. White phosphorus is poisonous. The toxic dose of human is 15mg and the lethal dose is 50mg. After taking white phosphorus by mistake, serious gastrointestinal irritation and corrosion symptoms will soon occur. A large amount of intake can die from systemic bleeding, hematemesis, bloody stool and circulatory system failure. If the patient can survive temporarily, he can also die slowly due to liver, kidney and cardiovascular dysfunction. When the area of skin burned by phosphorus is more than 7%, it can cause severe acute hemolytic anemia and even die of acute renal failure. Long term inhalation of phosphorus vapor can lead to tracheitis, pneumonia and serious bone damage.
Xanthan Gum
Xanthan gum is a kind of macromolecular polysaccharide material, which is polymerized with 5 Molecular sugars as a unit. Each unit consists of two molecules of glucose, two molecules of mannose and one molecule of glucuronic acid. Its main chain is composed of two molecules of glucose linked by β - glucose through 1,4-glycoside bond. Its structure is the same as that of cellulose. There are two molecules of mannose and one molecule of glucuronic acid on C3 of glucose to form side chain. There are pyruvate and carboxylic acid side groups in the side chain. Because its side chain contains acid groups, it is polyanion in aqueous solution, forming the three-dimensional structure of xanthan gum: the side chain with anions winds the main chain to form a spiral structure, and the molecules form a double helix by hydrogen bond, while the double helix structure is a regular "super bonded ribbon spiral polymer" by weak non covalent bond dimension system. The unique properties of xanthan gum are related to the pyruvic acid contained in it. Usually, the content of pyruvic acid in xanthan gum can be used to measure its performance.
Xanthophyll
Lutein is a kind of carotene, which belongs to photosynthetic pigment. It is widely found in vegetables (such as spinach, cabbage, broccoli, etc.), flowers, fruits and other plants. It can transfer the absorbed light energy to chlorophyll a in a special state for its conversion of light energy, and has the function of protecting chlorophyll. The pure product is prismatic yellow crystal, with metallic luster, unstable to light and hydrogen, insoluble in water, soluble in oil and fat solvent. It shall be stored in a cool and dry place and sealed away from light.
Xtandi
It is used to treat advanced castration tolerance of prostate cancer in men who have spread or relapsed. Well mixed amine for androgen receptor inhibitor, was able to suppress androgen receptors and competitive, and can suppress androgen receptors as well as the nuclear transport receptors interact with the DNA of the in vitro experimental study shows that well mixed amine lu can inhibit proliferation and induce the death of prostate cancer cells in mouse prostate cancer xenograft model experiment well mixed amine lu to shrink the tumor volume , the main metabolites of mixed amine lu for N - methyl well mixed amine, its in vitro with mixed amine lu similar inhibitory activity
YTTERBIUM
Ytterbium: Atomic Number 70, atomic weight 173.04, element name comes from its discovery site. Mariniak separated ytterbium oxide from Er soil in 1878. In 1907, urban and weils pointed out that mariniak separated a mixture of lutetium oxide and ytterbium oxide. The content of ytterbium in the earth's crust is 0.000266%. Ytterbium is mainly found in yttrium phosphate ore and black rare gold ore. there are seven kinds of natural isotopes.
YTTERBIUM OXIDE
Chemical formula Yb2O3. The molecular weight is 394.08. The pure product is colorless powder, light brown or yellow when it contains thulium oxide. Slightly hygroscopic, absorb carbon dioxide from the air. The proportion is 9.2. Melting point 2,346°C. It is the weakest in the yttrium group except lutetium oxide. Insoluble in water and cold acid, soluble in hot dilute acid.
YTTRIUM
Yttrium is silvery white to dark gray, or black solid or gray powder. Odorless. Elements of group III-B of the periodic table. It is very similar to rare earth metals. Yttrium is usually found together with rare earth elements. Although it is classified as rare earth elements in some aspects, it is listed as the first element in the second row of rare earth elements (period 5) in the periodic table of elements and belongs to transition metals. It is the lightest of all the rare earth atoms. (Note: yttrium is located in the periodic table above the element lanthanum (Group 3), which starts the lanthanide rare earth series. Yttrium can be dissolved in weak acids, strong bases such as potassium hydroxide and water. The melting point is 1522 ℃, the boiling point is 5338 ℃, and the density is 4.469g/cm3.
Ytterbium Chloride
Hygroscopic. The melting point is 865℃, and the relative density is 2.575. Soluble in water, soluble in anhydrous ethanol. 6 molecules of water are lost at 180℃. Preparation method: Dissolve ytterbium oxide or hydroxide in hydrochloric acid, evaporate and concentrate on a water bath.
Yttrium Oxide
Chemical Y2O3, white with yellow powder, insoluble in water and alkali, soluble in acid. It is mainly used for manufacturing magnetic materials for microwave and important materials for military industry (single crystal; yttrium iron garnet, yttrium aluminum garnet and other composite oxides), as well as additives for optical glass, ceramic materials, high brightness phosphor for large screen TV and other picture tube coatings.
Zeaxanthin
Zeaxanthin is a new type of oil-soluble natural pigment, widely found in green leafy vegetables, flowers, fruits, wolfberry and yellow corn. In nature, it often coexists with lutein, β-carotene, cryptoxanthin, etc. to form a carotenoid mixture.
Zidovudine
Zidovudine (ZDV), also known as azidothymidine (AZT), is an antiretroviral medication used to prevent and treat HIV/AIDS.It is of the nucleoside analog reverse-transcriptase inhibitor (NRTI) class. AZT inhibits the enzyme (reverse transcriptase) that HIV uses to synthesize DNA, thus preventing viral DNA from forming.
Zinc Acetate
White fine crystal, soluble in water, easily weathered, slightly sour. Reagent for determination of sodium, hydrogen sulfide, protein, chromatographic analysis reagent, mordant used in polyester industry, etc.
Zinc Borate
Zinc borate is an inorganic additive flame retardant, which is characterized by good thermal stability, flame retardancy and smoke elimination. It can replace antimony trioxide in some products, and can also be used in coordination with other inorganic flame retardants, with better effect. This product is widely used in rubber, plastic, cable, wood, defense and military products, coating, tarpaulin and other industries.
Zinc Carbonate Basic
White fine amorphous powder. Odorless and tasteless. Insoluble in water and alcohol, slightly soluble in ammonia. Soluble in dilute acid and sodium hydroxide. Mainly used as catalyst, desulfurizer, and also used as active agent for natural rubber, styrene-butadiene rubber, butyl rubber, nitrile rubber, neoprene rubber, EPDM, and rubber. It is widely used in the manufacture of transparent products.
Zinc Chloride
Zinc chloride is the name of chemical compounds with the formula ZnCl2 and its hydrates. Zinc chlorides, of which nine crystalline forms are known, are colorless or white, and are highly soluble in water. ZnCl2 itself is hygroscopic and even deliquescent. Samples should therefore be protected from sources of moisture, including the water vapor present in ambient air. Zinc chloride finds wide application in textile processing,metallurgical fluxes, and chemical synthesis. No mineral with this chemical composition is known aside from the very rare mineral simonkolleite, Zn5(OH)8Cl2·H2O.
Zinc Nitrate Hexahydrate
Zinc nitrate is a colorless tetragonal crystal, which is easy to deliquesce and needs to be stored away from light. It is used for galvanizing machine and bicycle parts, preparing steel phosphating agent, as mordant when dyeing fabrics, as storage agent for dye synthetic articles and as latex coagulant, etc.
Zinc Oxide
Zinc oxide is an oxide of zinc. Insoluble in water, soluble in acid and strong base. Zinc oxide is a common chemical additive, which is widely used in the production of plastics, silicate products, synthetic rubber, lubricants, paint coatings, ointment, adhesives, food, batteries, flame retardants and other products. Zinc oxide has large energy band gap and exciton binding energy, high transparency and excellent room temperature luminescent performance. It is applied in liquid crystal display, thin film transistor, light emitting diode and other products in semiconductor field. In addition, as a kind of nano material, micro zinc oxide has also begun to play a role in related fields.
Zinc Phosphate
Zinc phosphate is formed from zinc phosphate cement and used in dentistry. Zinc phosphate
Zinc Stearate
Zinc stearate is a white light fine powder. Combustible, specific gravity 1.095, self ignition point 900 ℃ , density 1.095, melting point 130 ℃ , greasy. It is insoluble in water, ethanol, ether, hot ethanol, turpentine, benzene and other organic solvents and acids. Zinc stearate is heated and dissolved in organic solvent, then it becomes colloidal when it is cooled, and decomposes into stearic acid and corresponding zinc salt when it is exposed to strong acid. It has lubricity, hygroscopicity, non-toxic, slightly irritant, pollution-free and non hazardous properties. By using the property that zinc stearate is soluble in benzene and calcium stearate is insoluble in benzene, zinc stearate and calcium stearate can be separated.
Zinc Sulphate Heptahydrate
Main application: used in the manufacture of lithopone, and used as a mordant, astringent, wood preservatives, etc.
Zinc Sulphate Monohydrate
Used in synthetic fibers, pesticides, dyes, electroplating and other zinc salt manufacturing is the raw material of zinc salt and lithopone. Smelting technology used in cable galvanized and pure zinc electrolysis. Is also used to prevent the fruit tree nursery diseases, wood and leather preservation agent and man-made fiber industry. Food grade used as a nutritional supplement (zinc fortifier).
Zineb
Zineb is a light-coloured powder/crystal and insoluble in water. Zineb is one of the nonsystemic (surface-acting) fungicides of the group ethylenebisdithiocarbamates (EBDCs). Zineb is a polymer of ethylene (bis)thiocarbamate units linked with zinc and used for the control and prevention of crop damage in the field and also to protect harvested crops from deterioration during storage or transport. Zineb was used to protect fruit and vegetable crops from a wide range of foliar and other diseases.
Zoledronic Acid
Zoledronic acid monohydrate is a white powder, tasteless, fusible in sodium hydroxide solution, slightly soluble in water, insoluble in methanol, ethanol and dichloromethane. Melting point 237 ℃ - 240 ℃. Zoledronic acid has an alkaloid structure and can form orange yellow precipitate with bismuth potassium iodide. Take 20mg of this product and add 20ml of water, pH = 2.0-3.5.
