RUBBER VULCANIZING ACCELERATOR DCBS (DZ)
- 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
You Might Also Like
RUBBER VULCANIZING ACCELERATOR DCBS (DZ)
Chemical Name : N ,N-Dicyclohexyl-2-Benzothiazole sulfonamide
Molecular Formula: C19H26N2S2
Molecular Weight: 346.56
CAS NO. : 4979-32-2
Executive standard：QB/DZ01-2008
Specification:
Item | Index |
Acceptable end-product | |
Appearance(Visual inspection) | Light yellow to light brown powder |
Initial M. P, oC ≥ | 98.0 |
Loss on drying,% ≥ | 0.50 |
Ash,% ≤ | 0.50 |
Properties: Light yellow to light brown powder, the relative density of 1.2, soluble in benzene, dichloromethane, carbon tetrachloride, insoluble in gasoline, acetone, ethyl acetate and ethanol, insoluble in water.
Application: DCBS is a sulfenamide accelerator with excellent anti-scorching property and delayed onset of cure. It is compatible with natural and synthetic rubbers, suitable for radial ply tyre, rubber belts and shock absorber, etc. Particularly it produces good adhesion to metal.
Packaging: 25kg plastic woven bag, paper with plastic film bag, 25kg drum.
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 similarity between enzymes and general chemical catalysts?
- (1) The enzyme is the same in many respects as a biocatalyst and a general catalyst, such as a small amount and a high catalytic efficiency. As with the general catalyst, the enzyme can only change the rate of chemical reaction and does not change the equilibrium of the chemical reaction It is possible to catalyze the activation of a large number of substrates in a short time and to reflect the high efficiency of enzyme catalysis.The enzyme can reduce the activation energy of the reaction (activation) (△ G) during the reaction, but the reaction rate is accelerated and the reaction time is reduced, but the equilibrium constant is not changed. (2) However, the enzyme is a biological macromolecule (1) Enzyme-catalyzed high efficiency: The catalytic effect of the catalyst can increase the reaction rate by 10 ^ 6 ~ 10 ^ 12 times, which is at least several times higher than that of the conventional catalyst. (2) The enzyme catalyst Highly specificity: including specificity of response, substrate specificity, chirality specificity, geometric specificity, etc., that an enzyme can only act on a certain class or a specific substance. Bond, ester bond, peptide bond and so on can be catalyzed by acid-base hydrolysis, but the hydrolysis of these chemical bonds are different, respectively, the corresponding glycosidase, esterase and peptidase, that is, they were specific (3) enzymatic reaction conditions are mild: enzymatic reaction is generally carried out in aqueous solution of pH = 5 ~ 8, the reaction temperature range is 20 ~ 40 ℃
- Q: What is the microcosmic principle of the catalytic reaction in the chemical reaction?
- It is actually directly involved in the reaction, but, after the reaction, it has become a product out, the equivalent of no response
- Q: Could God be Discribed as a Catalyst?
- it is my understanding that a Catalyst will bring something together that is already created. God on the other hand, according to Judeo-Christian Theology, he didn't just bring it together, he created it. plus, if the Judeo-Christian God did exist, we would have to assume (because of archaeological and scientific evidence) that He is the God of the Bible and that he does play a role in the same of things.
- Q: explain how a catalyst can affect the rate of reaction but not be in the overall equation.?
- Simply, the catalyst provides a better way for the reaction to occur (some won't work without the catalyst) and usually a favorable reaction will run faster if there is a catalyst. There are many ways for this to happen. The catalyst can provide more surface area for a reaction to occur, it can do an adsorption process where one of the reactants sticks to the surface and exposes a portion of the molecule which is more favorable to the reaction. It can lower the energy required for the reaction to occur (same effect as increasing temperature) by favoring an intermediate step in the reaction. Lots of different ways, some not fuly identified or understood. The catalyst people who work with the platinum metals groups are notorious for keeping their mixtures secret. A better gasoline catalyst for refineries is worth billions in profits. It is not considered in the equation because you get back what you start with even if one of the intermediate steps involves changing the chemical composition of the catalyst and then has it returning to its original state with the formation of the product.
- Q: What is the catalytic efficiency of ordinary chemical catalysts?
- Different reactions, with the same catalyst, the catalytic efficiency is different. The same reaction, with different catalysts, the catalytic efficiency is also different
- Q: Is the chemical reaction rate constant related to the amount of catalyst used?
- The decomposition of hydrogen peroxide, manganese dioxide in addition to the catalyst, but also in which it can be considered a carrier (from the surface of manganese dioxide to emit small bubbles, you should be able to see), so the amount of more than certainly can speed up the reaction.
- Q: Why does the chemical and chemical properties change before and after the reaction?
- Catalysts are homogeneous catalysts with heterogeneous catalysts. The heterogeneous catalyst exhibits a reaction in a different phase (e.g., a solid catalyst in a liquid mixing reaction) and a homogeneous catalyst is a reaction in the same phase (for example, a liquid catalyst in a liquid mixing reaction). A simple heterogeneous catalytic reaction involves the addition of a reactant (or en-ch: substrate; zh-tw: subject) adsorbed on the surface of the catalyst, and the bond within the reactant causes a new bond due to the fragility of the bond, But because of the product and the catalyst between
- Q: Several experiments were carried out using catalysts
- Hydrogen peroxide in the manganese dioxide as a catalyst for decomposition reaction: 2H2O2 == MnO2 == 2H2O + O2 ↑ (laboratory oxygen principle)
- Q: Write a chemical formula in a chemical laboratory without the use of a catalyst for oxygen
- 2KMnO4 ==== K2MnO4 + MnO2 + O2 ↑
- Q: Why would the Eact decrease if a catalyst is added?
- A catalyst by its very nature increases the rate of reaction by binding to a reactant, hence changing its shape and reactivity with other reactants. However, the catalyst is neither consumed nor will it change the chemical shape of the products.
Send your message to us
RUBBER VULCANIZING ACCELERATOR DCBS (DZ)
- 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
Similar products
Hot products
Hot Searches
