RUBBER VULCANIZING ACCELERATOR TBBS (NS)
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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 TBBS(NS)
Chemical Name: N-Tertiarybutyl-2-benzothiazole sulfennamide
Molecular Formula:C11H14N2S2
Molecular Weight:238.37
CAS NO. : 95-31-8
Executive standard：GB/T21840-2008
Specification:
Item | Index |
Appearance | White or light yellow powder, granular |
Initial M.P,oC ≥ | 104.0 |
Loss on drying, % ≤ | 0.40 |
Ash, % ≤ | 0.30 |
Residues on 150μm sieve, % ≤ | 0.10 |
Insoluble in Methanol,% ≤ | 1.00 |
Free amine,% ≤ | 0.5 |
Properties: White or light yellow powder, granular. The density is 1.26-1.32. Soluble in benzene, methylene chloride, carbon tetrachloride, ethyl acetate, acetone, ethanol, dissolved gasoline, do not dissolve in water, acid, dilute alkali solution.
Application: Provides fast cure rate and high modulus development in NR, SBR, BR and blends. Normally used alone or with small quantities of ultra accelerators in tire compounds or industrial rubber products low poison and high efficiency. It is good back up for NOBS. Be regarded as standard accelerator.
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 1 year
Note: The product could be ultra fine powder based on customer accurate requirement.
- Q: What is the principle of catalyst reaction rate in chemical reactions?
- Whether the chemical reaction can be carried out according to the change of free energy, but only according to the change of free energy can not determine whether the reaction can be completed, because the chemical reaction is also completed by the reaction of the energy barrier, that is, if the reaction energy barrier is high, To provide some energy, across the barrier, to complete the reaction. The energy barrier is called activation energy. And the role of the catalyst is to reduce the activation energy, so that in a relatively harsh environment, chemical reaction occurs.
- Q: The "one-to-two change" of the catalyst is that the quality and chemical properties of the reactants are constant or the quality and chemical properties of the catalyst are constant?
- The morphology of the catalyst may change before and after the chemical reaction, but the quality and chemical properties of the chemical reaction do not change before and after the chemical reaction. It is noteworthy that this does not mean that the catalyst is not involved in chemical reactions. Some chemical catalysts are involved in chemical reactions, but in the form of intermediates, consume a certain amount of catalyst in a chemical reaction, but in the subsequent chemical reactions, the same quality of the catalyst will be produced. On the whole, the quality of the catalyst before and after the chemical reaction is not changed.
- Q: What are the catalysts that appear in the chemistry experiment?
- Hydrogen peroxide, manganese dioxide
- Q: What is the catalyst for ethylene addition water? How to play a catalytic role.
- With dilute sulfuric acid can be. Sulfuric acid will be added with the addition of ethyl hydrogen sulfide, and then hydrolyzed into ethanol.
- Q: and what type of macromolecule are they made of? thanks!
- A catalyst is any substance that speeds up a chemical reaction without otherwise changing the outcome of the reaction. Catalysts do this by lowering a reaction's activation energy (which is the energy barrier that must be overcome before the reaction can proceed spontaneously). Catalysts are not permanently changed by the reactions they catalyze, so one catalyst could reasonably catalyze the same reaction many times over. Enzymes are biological catalysts because they lower the activation energy of metabolic reactions (and therefore increase their rate). Every enzyme has an active site that is specific for a particular substrate, or for a small related group of substrates. When the correct substrate binds to the active site, the enzyme catalyzes a particular reaction and releases new products. Substrates that don't match the shape of the enzyme's active site usually won't be affected by the enzyme. Enzymes are proteins, which are in turn polymers of amino acids. The sequence of amino acids in an enzyme, as well as the three-dimensional structure of the polypeptide chain, are essential for determining the enzyme's functionality. I hope that helps. Good luck!
- Q: The size of △ H in the thermochemical reaction equation is related to the use and unused catalyst
- There is no relationship between the catalyst can only change the reaction rate
- Q: the process of which the heterogeneous catalyst work in vehicles. a step by step instruction in how they work. :)
- The Reduction Catalyst The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the NOx emissions. When an NO or NO2 molecule contacts the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2. The nitrogen atoms bond with other nitrogen atoms that are also stuck to the catalyst, forming N2. For example: 2NO =N2 + O2 or 2NO2 =N2 + 2O2 The Oxidization Catalyst The oxidation catalyst is the second stage of the catalytic converter. It reduces the unburned hydrocarbons and carbon monoxide by burning (oxidizing) them over a platinum and palladium catalyst. This catalyst aids the reaction of the CO and hydrocarbons with the remaining oxygen in the exhaust gas. For example: 2CO + O2 =2CO2
- Q: In biology, the enzyme seems to be a tool for opening a reaction, such as the decomposition of cellulose, such as linked RNA and protein, no enzyme can not. But in chemistry, the catalyst is only a regulatory role, change the reaction rate only. The teacher said that the enzyme is the catalyst. Is there any other effect of the enzyme? (Ignorant high three dogs, you do not spray the big god)
- But let's not say that there is no enzyme or catalyst, the reaction can not be carried out. In the process of random collision of a molecule, the occasional jump of 3 meters is also possible, but the probability is low. From the macro point of view, is the reaction rate is low. So what rate, catalyst, or what xxx let high school teacher how to say, chemical catalysis and enzyme catalysis of the fundamental principles are the same, so you go to college to understand.
- Q: Write a chemical formula in a chemical laboratory without the use of a catalyst for oxygen
- 2Na2O2 + 2H2O = 4NaOH + O2 ↑
- Q: What kind of chemical reaction requires a catalyst?
- For example, the system of ammonia, S02 oxidation into SO3
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RUBBER VULCANIZING ACCELERATOR TBBS (NS)
- 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
OKorder Financial Service
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