RUBBER VULCANIZING ACCELERATOR ZDBC (BZ)
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- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 12000 m.t./month
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RUBBER VULCANIZING ACCELERATOR ZDBC (BZ)
Chemical Name: Zinc dibutyl dithiocarbamate
Molecular Formula: C18H36N2S4Zn
Molecular Weight: 474.1
CAS NO. : 136-23-2
Executive standard：Q/ZYCH6-2003
Specification:
| Index |
Acceptable end-product | |
Appearance | white powder |
Initial M.P, oC ≥ | 180.0 |
Loss on drying, % ≤ | 0.50 |
Ash, % ≤ | 10-12 |
Residues on 150μm sieve，% ≤ | 0.50 |
Properties: White powder. The density is 1.24. Soluble in carbon sulfide. benzene, chloroform, insoluble in water. Good storage stability.
Application: Used for primary or secondary ultra-accelerator in NR. IR, BR, SBR, NBR, HR. EPDM, and their latexes. Similar in property to PZ and EZ. less accelerating effects than PZ and EZ to dry rubber. Effectively used in both natural and synthetic latexes for faster curing at normal (low) temperature than with PZ and EZ, and less scorching and blooming
Packaging: 25kg plastic woven bag, paper with plastic film bag, Kraft paper bag, or jumbo bag.
Storage: The product should be stored in the dry and cooling place with good ventilation, avoiding exposure of the packaged product to direct sunlight. The validity is 2year.
Note: The product could be ultra fine powder based on customer accurate requirement.
- Q: Carbon dioxide and hydrogen in the catalyst and heating conditions, the reaction of water and methane, the chemical equation is what
- CO2 + 4H2 = catalyst, heating = 2H2O + CH4
- Q: why is palladium/platinum a good catalyst?
- Sparky 22 is wrong. Metals like palladium and platinum and nickel do absorb hydrogen. For example many times when doing a catalytic hydrogenation with Raney-Nickel you do not need to add H2 because enough H2 is already absorbed on the metal.
- Q: what is metallocene catalyst technology?
- Metallocene catalyst A transition-metal atom sandwiched between ring structures having a well-defined single catalytic site and well-understood molecular structure used to produce uniform polyolefins with unique structures and physical properties. See also Catalysis; Coordination chemistry; Coordination complexes; Metallocenes; Organometallic compound. In the early 1980s, W. Kaminsky discovered that an appropriate co-catalyst activated metallocene compounds of group 4 metals, that is, titanium, zirconium, and hafnium, for alpha-olefin polymerization, attracting industrial interest. This observation led to the synthesis of a great number of metallocene compounds for the production of polymers already made industrially, such as polyethylene and polypropylene, and new materials. Polymers produced with metallocene catalysts represent a small fraction of the entire polyolefin market, but experts agree that such a fraction will increase rapidly in the future. See also Polymer; Polymerization; Polyolefin resins.
- Q: How are the 4 characteristics of a catalyst (1. organic or inorganic 2. reusable 3. Highly specific, and 4. lowers activation energy) important in preforming life functions? please be as specific as possible, i understand that these are characteristic, i just don't understand why they're beneficial, other than the reusable and lowers activation energy one.
- Organic or Inorganic - the catalyst (enzyme) must be organic to be found in the cell. Catalysts speed up chemical reactions inside a cell and must therefore be organic to be a functioning part of the cell. Reusable - There are so many reactions that catalysts are involved in that it would be a waste for the cell if a catalyst could only last one reaction, especially if there are inhibitors and competition for the active site. Catalysts must be reusable in order to keep the cell functioning. Catalysts always remain unchanged after a reaction. HIihly Specific - Catalysts are only made to catalyze one specific chemical reaction. Their active site has proteins bonded in such a way that only certain elements can enter the active site and H bond with those proteins. The fact that they are highly specific maximizes the productiveness of the cell. And it ensures that the cell only has catalysts to reactions that it needs to be completed. It also ensures that the elements are correctly bonded with eachother. If any two elements could enter the active site, there is no guarantee that the correct product will be produced. Catalysts and Enzymes must be super highly specific in order to properly function. Lowers Activation Energy - The more energy a cell has to spend to catalye a reaction, the worse it is for the cell and the less ATP is has for other reactions. Catalyts hold the substrates together so there is less energy that is needed to have the two substrates react with eachother. Activation Energy is the energy that is needed to start a reaction. So the less energy used by the cell for reactions, the better for the cell. Hope this helps
- Q: In the chemical reaction, why can the catalyst speed up the reaction rate
- Platinum and rhodium catalyzes the conversion of carbon monoxide and nitrogen oxides to carbon dioxide and nitrogen, which are used in the conversion of automobile exhaust gases, and in most cars.
- Q: What is chemical adsorption and its relationship with heterogeneous catalysis
- The catalytic cycle includes five steps: diffusion, chemical adsorption, surface reaction, desorption and reverse diffusion.The chemical adsorption is an important part of the heterogeneous catalysis process, and the adsorption of the reactants on the catalyst surface,
- Q: Where are they good catalysts and why?? THanks!
- A catalyst is a substance that speeds up a chemical reaction by providing an alternate reaction pathway with a lower activation energy. Catalysts appear not to take part in the reaction. Frequently, catalysts are not very reactive. Acids and bases, on the other hand, are very reactive. Acids (as H+) and bases ( as OH-) sometimes function as catalysts in some organic reactions. They appear to be catalysts because in the course of the mechanism H+ or OH- is regenerated.
- Q: I was hoping to buy a land rover lr4 or lr2, but with the lr4 having gas mileage in the mid teens, i wanted to know if there is a way to improve it. I dont drive on the highway too much. I'd like to know if there is anything else to improve mileage too. I drive a lot of people around for functions, family, and others and I looked at other suvs but those two looked the best.
- Fuel catalyst is another name for fuel additive, the companies that make these additives make all kinds of claims how it increases power and reduces emiissions.. blah blah blah. Fuel catalyst is nothing more then a octane booster (gas engines) or cetane booster (diesel engines), it like all the other bogus products are worthless, octane booster will only show an improvement in performance IF the octane level in your current fuel supply is too low, higher octane fuel burns slower then lower octane fuel, that's how it quenches pinging and preignition both of which are caused by incorrect engine design and/or settings. Always use the lowest octane fuel that the engine will tolerate, if you have to pull advance out of the total timing then it needs more octane to run full timing and make max power, the only thing you can do to improve the quality of fuel in your tank is add a stabililizing additive such as (Stabil), it treats the fuel and prevents it from going stale or turning to varnish, it's especially useful when the vehicle is parked for long periods with fuel in the tank and carburetor, normally after a month or two of being parked the fuel in the carb turns to varnish and clogs the jets, with Stabil the fuel doesn't change composition.
- Q: Just something I've always wondered about...
- activation energy has got nothing to do with this. the main reason that the transition metal oxides are catalysts is that they have vacant d orbitals. the reagents are adsorbed on the metal surface and the d orbitals serve as a sort of clamp between the substrates and reagents. for example if you consider the hydrogenation of ethylene in palladium catalyst here the d orbitals lead to syn addition of hydrogen by clamping the pi electron cloud . this is a sort of chemisorption.
- Q: put in a way that a freshman in high school can understand please =)
- which of the following statement apply both to enzymes and to any other catalysts: their activity is stopped by high temperature. they speed up chemical reaction. they are proteins. they are not used up during the reaction
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RUBBER VULCANIZING ACCELERATOR ZDBC (BZ)
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 12000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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