(1)ApplicationZTA grinding media, is mainly used in coating, paint, pigment, ceramics, ink, electronic ceramics, titanium dioxide, pesticides, Kaolin, calcium carbonate, zirconia powder, mineral material, special chemical and other industries, also applied in o materials(such as lithium battery, barium sulfate, grinding ceramic ink, etc.)(2) PropertiesHigh strength, high fracture toughness, high corrosion resistance and super smooth surface, rge specific gravity, abrasion resistance, PPM abrasion grade, high hardness.(3)Chemical PropertyZTA280ZTA320ZTA370ZTA380ZTA450ZTA470Al2O3(%)≥57≥70≥87≥66≥5≥3ZrO2(%)≥5≥5≥5≥18≥62≥70SiO2(%)≤30≤20≤5≤12≤30≤24HVhardness(GPa)≥7≥8≥12.5≥11≥10≥10CrushingStrength(N)≥250()≥800(ø3.5)≥1000(ø3)≥12000(ø8)≥1200(ø3)≥1300(ø3)Water absorption<0.01<0.01<0.01<0.01<0.01<0.01Bulk density(g/cm3)≥2.80≥3.15≥3.70≥3.78≥4.48≥4.60We≥95%≥95%≥95%≥95%≥95%≥95%(4) Standard Dimensionmm, ø1.5mm, ø2mm, ø2.5mm, ø3mm, ø3.5mm, ø4mm, ø5mm, ø6mm, ø8mm. 10mm,13mm(5) PackageDifferent package as to meet different customer's requirements.Wooden Crates Drum Plastic Pallet Bulk Pack has been founded in 1997 and covered the area of 160mu,having more than 260 staffs i has set up their wholly o. The annual production of wear resistant ceramic and grinding media is 18000 tons. Our factory passed the ISO 9001:2015 standard quality management system certificate and successfully listed on the new OTC market in January 2017.Our products are also exported to many courtries and build long-term business relationship with customers. 2v55jL5K27dK 95% Yttria Stabilized 5mm Zirconia Dioxide Beads Precision Ceramic Grinding Ball-High density-High fracture toughness-Large Specific density-Wear resistant,anti corrosion-PPM Grade wear lossChemical PropertyYTZ yttria zirconia grinding beads propertiesItemsTypical ValuesCompositionWt%94.8% ZrO25.2% Y2O3Packing Densitykg/L3.7~3.9Bulk Densityg/cm35.95~6.0Hardness (HV)GPa>8Wea%≥95Standard sizemPacking25kgsPackageDifferent package as to meet different customer's requirements.25khas been founded in 1997 and covered the area of 160mu,having more than 260 staffs i has set up their wholly o. The annual production of wear resistant ceramic and grinding media is 18000 tons. Our factory passed the ISO 9001:2015 standard quality management system certificate and successfully listed on the new OTC market in January 2017. The stock code is 870601.Our products are also exported to many courtries and build long-term business relationship with ery year we also go to many exhibitions all over the world.What can we do for you?1. Sample is available.2. Independent R&D, ISO manufacture, precise quality standards, modern logistics management, and sound marketing strategy.3. Inquiry replied within 24 hours.4. Patented products.5. Some extra accessories can be e larger quantity you order,the morepetitive prices you'll get.7. Necessary Certificates can be supplied.Why To Choose Us1. What's your MOQ ;We have no MOQ for your try won't occupy too much of your money to help you to test the market you're going to enter.2. R & D Center and Factory:We have our own R & D center and factory, so we can supply you products atpetitive price. wxsWKJDcsiu1 High Quality Pta Purified Terephthalic Acid CAS with Safe Delivery in StockBasic InformationDescriptionTerephthalic acidis anorganicpoundwithformulaC6H4(CO2H)pally as a precursor to thepolyesterPET, used to make clothing andplastic bottles. Several million tonnes are produced emon name is derived from the turpentine-producing treePistacia terebinthusandphthalic nthesisAmoco ProcessIn the Amoco process, which is widely adopted worldwide, terephthalic acid is produced by catalytic oxidation ofpxylene:The process uses a cobalt-manganese-bromide catalyst. The bromide source can be sodium bromide, hydrogenbromide or tetrabromoethane. Bromin functions as a regenerative source of free radicals. Acetic acid is the solvent andpressed air serves as the oxidant. Thebination of bromin and acetic acid is highly corrosive, requiring specialized reactors, such as those lined with titanium. A mixture ofpxylene, acetic acid, the catalyst system, andpressed air is fed to a reactor.MechanismThe oxidation ofpxylene proceed by a free radical process. Bromin radicals dpose cobalt and manganese hydroperoxides. The resulting oxygen-based radicals abstract hydrogen from a methyl group, which have weaker C-H bonds than does the aromatic ring. Many intermediates have been isolated.pxylene is converted top-toluic acid, which is less reactive than the p xylene owing to the influence omplete oxidation produces 4-carboxybenzaldehyde (4-CBA), which is often a problematic impurity.[5][6][7]ChallengesApproximately 5% of the acetic acid solvent is lost by dposition or "burning". Product loss by decarboxylation to benzoic acid ismon. The high temperature diminishes oxygen solubility in an already oxygen-starved system. Pure oxygen cannot be used in the traditional system due to hazards of flammable organic-O2mixtures. Atmospheric air can be used in its place, but once reacted needs to be purified of toxins and ozone depleters such as methylbromide before being released. Additionally, the corrosive nature of bromides at high temperatures requires the reaction be run in expensive titanium ternative Reaction MediaThe use of carbon dioxide ovees many of the problems with the original industrial process. Because CO2is a better flame inhibitor than N2, a CO2environment allows for the use of pure oxygen directly, instead of air, with reduced flammability hazards. The solubility of molecular oxygen in solution is also enhanced in the CO2environment. Because more oxygen is available to the system, supercritical carbon dioxide (Tc= 31 °C) has moreplete oxidation with fewer byproducts, lower carbonmonoxide production, less decarboxylation and higher purity than themercial supercritical water medium, the oxidation can be effectively catalyzed by MnBr2with pure O2in a medium-high temperature. Use of supercritical water instead of acetic acid as a solvent diminishes environmental impact and offers a cost advantage. However, the scope of such reaction systems is limited by the even harsher conditions than the industrial process (300−400 °C, >200 bar).Promotors and AdditivesAs with any large-scale process, many additives have been investigated for potential beneficial effects. Promising results have been reported with the tones act as promoters for formation of the active cobalt(III) catalyst. In particular, ketones with a-methylene groups oxidize to hydroperoxides that are known to oxidize cobalt(II). Butanone is often used.Zirconium salts enhance the activity of Co-Mn-Br catalysts. Selectivity is also improved.N-Hydroxyphthalimidi is a potential replacement for bromide, which is highly corrosive. The phthalimidi functions by formation of the oxyl anidine inhibits the oxidation of the first methyl but enhances the usually slow oxidation of the toluic ternative RoutesTerephthalic acid can be prepared in the laboratory by oxidiziuding caraway oil or a mixture of cymene and cuminol with chromic though notmercially significant is the so-called "Hen and patent holder, respectively. This process involves the transfer of carboxylate groups. For example potassium benzoate disproportionates to potassium terephthalate and potassium phthalate rearranges to potassium mmus (now a subsidiary of McDermott International) has reported a route from the dinitrile, which can be obtained by ammoxidation ofpxylene.ApplicationsVirtually the entire world's supply of terephthalic acid and dimethyl terephthalate are consumed as precursors to polyethylene terephthalate (PET). World production in 1970 was around 1.75 million tonnes. By 2006, global purified terephthalic acid (PTA) demand had exceeded 30 million tonnes. A smaller, but nevertheless significant, demand for terephthalic acid exists in the production of polybutylene terephthalate and several other engineering efulPolyester fibers based on PTA provide easy fabric care, both alone and in blends with natural and other synthetic fibers. Polyester films are used widely in audio and video recording tapes, data storage tapes, photographic films, labels and other sheet material requiring both dimensional stability and toughness.Terephthalic acid is used in paint as a carrier.Terephthalic acid is used as a raw material to make terephthalate plasticizers such as dioctyl terephthalate and dibutyl is used in the pharmaceutical industry as a raw material for certain addition to these end uses, Terephthalic acid based polyesters and polyamides are also used in hot melt A is an important raw material for lower molecular weight saturated polyesters for powder and water-soluble the research laboratory, terephthalic acid has been popularized as aponent for the synthesis of metal-organic e analgesic drug oxyco done occasionallyes as a terephthalate salt; however, the more usual salt of oxyco done is the hydrochloride. Pharmacologically, one milligram ofterephthalas oxycodonaeis equivalent to 1.13 mg ofhydrochloridum oxycodonae.Terephthalic acid is used as a filler in some militari smoke grenades, most notably the American M83 smoke grenade and M90 vehicle-employed smoke grenade, producing a thick white smoke that acts as an obscurant in the is a high-tech innovative enterprise specializing in the R & D, production and sales of API, with the help of University Scientific Research Laboratory, making full use of the park policy advantages, focusing on the res always adheres to the business philosophy of "market demand oriented; technology research and development as the corepetitiveness; emerce as the platform", more accurate, better, faster and more reliable to provide biomedical products for pharmaceutical units, university scientific research institutions, hospital outpatient service, reagent units, distributors in the world.Why Choose Us?1. High-concentration products, strictly control the quality.2. Reasonable and flexible price matched with high quality.3. Spot samples can be shipped quickly after payment, saving time for receiving goods.4.Full experience of large numbers containers loadi.6. Have professional customs clearance capabilities and the best after-sales service.Our operate with research institutions, we strictly control the process from raw material to finished e customeres first, we provide reasonable price, high quality product and prompt shipment.3.We can send the goods to your delivery address directly. It is relatively safe and fast.4.Quick and clear response to customers questions.5.We could make our price discount if you place a substantial order with oducts can be packaged according to customer requirements.F.A.Q1:Can I get some samples before bulk order?Most products provide free samples, but the shipping cost be paid by customers.2: What's your MOQ?For the high value product, our MOQ starts from 10g,100g and 1kg.3: Which kind of payment terms do you accept?PI will be sent first after confirmation of order,enclosed our bank yment by T/T, Western Union, L/C, Alibaba trade assurance, Cashapp,Moneygram or Bitcoin.4.How to place an order?You can contact me through Trademanager, WhatsApp, Skype Online and other contact methods, tell me the product and quantity you need, and then we will give you a quote. If you choose one of the above payment methods, we will arrange the delivery for you.5:How about your delivery time?A: Generally, it will take 3 to 5 days after receiving your advance payment.6:How do you treat qualityplaint?A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss. RTeLKeWamRDh Calcium oxide is an inorganicpound whose chemical formula is CaO andmon name is ysical property is the surface of white powder, impure for gray, containing impurities in light yellow or gray, with emStandardTest resultsColorWhiteWhiteFormPowderPowderCa(OH)295.0%~100.5%Pass testCarbonatePass testPass testMagnesium and alkali metals2.0% max1.55%Acid insoluble matter0.1% max0.088%As2mg/kg max1.65mg/kgFluoride(As F)50mg/kg max48.9mg/kgPb2mg/kg max1.66mg/kgHeavy metal(As Pb )10mg/kg max9.67mg/kgLoss on drying1.0% max0.99%Sieve residue(0.045mm)0.4% max0.385%n be used as filler.2, used as an analytical reagent, gas analysis used as carbon dioxide absorber, spectral analysis reagent, high purity reagent used in semiconductor production epitaxy, diffusion process, laboratory amm onia drying and alcohol dehydration.3, used as raw materials, can manufacture calci um carbide, soda, bleaching powder, etc., also used for leather, wastewater purification, calcium hydroxide and a variety of calciumpounds;4, can be used as building materials, metallurgical flux, cement accelerator, phosphor flux;5, used as vegetable oil decolorizing agent, drug carrier, soil conditioner and calcium fertilizer;6, can also be used for refractory materials, desiccant [1];7, can be prepared agricultural machinery 1, 2 glue and underwater epoxy adhesive, but also used as a reaction agent with 2402 resin pre-reaction;8, used for acid wastewater treatment and sludge conditioning;9, can also be used as boiler stop pr of lime, so that the metal surface of the boiler water vapor system to keep dry, prevent corrosion, suit drum boiler long-term stop protection;10, can react with w own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas.We will use professional production technology to bring you the best product experience.we are looking forward to cooperating with you. vOvSEfNNBnO7
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