Rubber Chemcials Rubber Antioxidant MODEL MB
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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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MB
Chemical Name:2- Mercaptobenzimidazole
Molecular Formula:C 7 H 6 N 2 S
Molecular Weight:150.2
CAS No.:583-39-1
Specifications:
Item | Specifications | ||
High Grade | 1st Grade | Qualified | |
Appearance | Light-yellow or white Power crystals (Granules) | ||
Initial Melting Point°C Min. | 295.0 | 290.0 | 285.0 |
Heat Loss, % Max. | 0.30 | 0.40 | 0.50 |
Ash, % Max. | 0.30 | 0.40 | 0.50 |
Residue on 150 µm Sieve % Max. | 0.30 | 0.40 | 0.50 |
Properties: Light-yellow or white Power crystals, bitterness, relative density is 1.42 ± 0.02g/cm3 , soluble in alcohol, acetone and ethyl acetate, difficully soluble in gasoline petrol and dichloromethane, insoluble in carbon tetrachloride, benzene and water, non-toxic.
Applications: Antioxidant MB can effectively protect the pollution of copper and deal with the bad effect of over-vulcanization. It has an acation of delay to the accelerator M, DM, TMTD, etc. There are better actions when it is used with antioxident . Change less in color, it can be used in wire, cable and transparent or color rubber products and it also can be used as heat stabilizer of polyethylene and polypropylene.
Packing: Coextruded paper bags lined with polyethylene film bags. Net weight 25 kg per bag.
Storage: Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
- Q: Have you Read it ? If SoCan You Think Of Any Good Group Discussion Questions ?
- no but aOMG i laurie halse anderson! OMG I LOVED HER BOOK FEVER 1793 wooooooooooo that book was aweomse. you should read it
- Q: Can Cuo react as a catalyst with H2O2, does its quality and chemical properties change?
- 2H2O2 (CuO catalyzed) ====== 2H2O + O2 ↑
- Q: how could scientists know the exact catalyst for every reactions??? THANX sooo much
- Believe me, nema, there's no way that we chemists know the best catalyst for every reaction. That would be simply impossible. However, from the type of reaction, the reactants, products, reaction conditions, solvents, etc. and from one's experience and the literature (papers and patents) one can get a good idea for most reactions of the type of catalyst that has worked for similar systems. One then starts off with a catalyst from the literature and modifies or changes it if improvement is needed based on chemical principles that one learns. There are also some theoretical calculations that can be made. Sometimes they work and sometimes they don't :) If it is an industrially important process like the Haber process for making ammonia from nitrogen gas and hydrogen gas, there may be thousands of catalysts which have been tried and evaluated. New minor improvements are being made every day. When a company does find a very good catalyst for an important reaction, often they keep it a trade secret. The good catalyst can make a huge difference in how commercially successful a particular process is. That's a large part of what chemical engineers do. You may never know if you have the best catalyst. The most you can hope for is one that is good enough. So it's a few parts personal knowledge, a few parts literature, a couple of parts theory, a lot of experimentation and often, more than not, a little luck. :)
- Q: Chemical Glossary: Catalyst
- The catalyst is a substance that can change the rate of the reaction without changing the standard of the reaction Gibbs free, according to the definition of the International Pure and Applied Chemistry (IUPAC) in 1981, Enthalpy change. This effect is called catalysis. The reaction involving the catalyst is a catalytic reaction.
- Q: How does catalyst aid a chemical reaction?
- it makes the reaction go faster.
- Q: Please make it simple because I need it for school and please give to examples for the second part Thanx :D
- A catalyst is a substance that speeds up the rate of a chemical reaction with itself being chemically unchanged at the end of the reaction. They are useful as they help to lower the minimum amount of energy needed ( also known as activation energy) to start the reaction. Hence, by lowering the activation energy of the reaction, they help to speed up the rate of reaction. For example, in the Haber process for the manufacture of ammonia, the catalyst iron is added to speed up the rate of reaction between hydrogen gas and nitrogen gas. Otherwise, the reaction would have proceeded much more slowly. Another example is the catalyst nickel used in the manufacture of margarine and vanadium (V) oxide for manufacturing sulfuric acid. As catalyst remain chemically unchanged after a reaction, they can be reused again and hence, they are required in minute amounts. An example is the washing powder used in washing clothes, they help to remove food stains by digesting the proteins in food. They can be reused after each reaction and hence, you do not need to add in the whole packet of washing powder but only a few spoonful.
- Q: Chemical "catalyst can speed up the chemical reaction rate of other substances," this sentence right?
- Wrong, the catalyst is divided into two kinds, one is to speed up the chemical reaction speed, and the other is the opposite
- Q: I know that a species that does not appear in the chemical equation may also affect the rate of a reaction - e.g. a catalyst. But does that mean the catalyst can be present in the rate equation, and if so are catalysts always present in the rate equation?
- All the factors that affect a reaction rate, except for concentration and reaction order, are taken into account in the rate equation of the reaction. A catalyst: The presence of a catalyst increases the reaction rate (in both the forward and reverse reactions) by providing an alternative pathway with a lower activation energy. en.wikipedia.org/wiki/Reaction_ra...
- Q: Is it not the rate to accelerate the addition of the catalyst to the catalyst, and that is why the balance does not move
- In the chemical equilibrium, after adding the catalyst, the positive and negative reaction rate increases equally, but the positive reaction rate is still equal to the reverse reaction rate, so the balance does not move
- Q: If possible can anyone give me information on the active site, substrates, products, and the energy of activation as part of the answer?Responses greatly appreciated! Thankss! 10pts to best answer!
- Catalysts help shift the equilibrium of a reaction to one that is more favorable. They allow a naturally occurring reaction that may be extremely slow to progress faster or an unfavorable reaction to proceed forward. During the process catalysts are recycled, which means that at the catalyst is the same compound in the beginning and the end of the reaction, although during intermediate steps catalysts can change conformation. Catalysts shift the equilibrium of a reaction by lowering the activation energy of a reaction, which is the energy barrier which must be overcome in order for the reaction to proceed in a desired direction. This can be achieved in several ways such as providing favorable thermodynamic conditions for a reaction or creating intermediates which react more favorably to create the products. Inside the cell a lot of chemical reactions are either too slow to proceed naturally or are simply unfavorable. Catalysts help overcome those barriers. The substrate is the part of the reaction which gets transformed into the products after binding to the active site of the protein.
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Rubber Chemcials Rubber Antioxidant MODEL MB
- 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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