RUBBER VULCANIZING ACCELERATOR MBTS (DM)
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RUBBER VULCANIZING ACCELERATOR MBTS(DM)
Chemical Name: Dibenzothiazole disulfide
Molecular Formula: C14H8N2S4
Molecular Weight:332.50
CAS NO. : 120-78-5
Executive standard：GB/T 11408-2003
Specification:
| Index | ||
High-class products | First-class products | Acceptable end-product | |
Appearance(Visual inspection) | White or light yellow powder, granular | ||
Initial M.P, oC ≥ | 170.0 | 166.0 | 162.0 |
Loss on drying, % ≤ | 0.30 | 0.40 | 0.50 |
Ash, % ≤ | 0.30 | 0.50 | 0.70 |
Residues on 150μm sieve，% ≤ | 0.00 | 0.10 | 0.10 |
Properties: white or light yellow powder (granule) with a little bitter, no poison. The density is 1.50, Melting point above 170℃,slightly soluble in benzene, chloroform and ethanol, is not soluble in water petrol. And ethyl acetate. Good storage stability.
Application: Given flat, moderately fast cures in NR and SR. Also used in a wide range of general purpose rubber. Non-staining and non-discolouring in "white" socks; used as a plasticizer and retarder in polychloroethylene rubber. Secondary acceleration is usually required for synthetic polymers. Better scorch safety than MBT.
Packaging: 20kg plastic woven bag, paper with plastic film bag, kraft paper bag or jumbo bag.
Storage: e 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 2 years.
Note: The product could be ultra fine powder based on customer accurate requirement.
- Q: High school knowledge __ teacher do not know right!
- Nothing to do, but with the percentage of activated molecules, is proportional to
- 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: Chemical questions: "CO2 and H2 in the catalyst conditions have a reaction, the reaction of the chemical equation is"
- CO2 + H2 = CO + H2O (conditions: catalyst, generally requires heating, and reversible)
- Q: The chemical equation of heating reaction of benzene and hydrogen under the action of catalyst
- C6H6 benzene + 3H2 - (arrow) C6H12 cyclohexane (Ni catalytic heating)
- Q: What are the chemical reaction conditions in organic chemistry are catalyst and heating, please elaborate
- This really does not have omnipotent law, their own more than one point, you can classify to remember, when I was in high school is in accordance with the notes, such as poly, polycondensation and the like. In general, the double triple bond addition, plus halogen is not the conditions, plus HCl, HBr and the like to heat; dehydration reaction generally concentrated H2SO4 heating, dehydration condensation is also; there are some special, such as ethylene added to ethanol Special temperature requirements, it seems that 120 degrees, there are other; other addition poly, polycondensation some need catalyst. The The In short, the conditions are many, in general, you do not go to the high school to do more questions after the feeling, encounter problems do not panic general experience can come out according to experience, this also depends on the usual accumulation, if the equation conditions Wrong to deduct points, it is not worthwhile. There are some questions when the examination will give you some information, whether you know do not know should see clearly, although some of the reaction but the subject to the conditions are not the same, when you do according to the title to write conditions, this will not wrong. In addition, thank you for your help, I do not seem to know you
- Q: 1. Catalysts can help to bring the reactants together in the correct orientation2. The chemical formula of a catalyst is written on the left hand side (reactant) side of an equation.3. Catalysts can provide a surface on which the reaction occurs.4. Catalysts increase the activation energy.5. Catalysts increase the magnitude of the equilibrium constant, thus favoring product formation.6. "Enzymes" are biochemical catalysts.7. Catalysts increase the rate of a reaction.8. Catalysts are slowly used up during the reaction and need to be replaced.
- 1. Catalysts can help to bring the reactants together in the correct orientation False. It provides an alternative pathway (of lower activation energy) for reaction to occur. 2. The chemical formula of a catalyst is written on the left hand side (reactant) side of an equation. False. Written on the arrow that show the reatctants becoming products. 3. Catalysts can provide a surface on which the reaction occurs. True. For instance platinium in the case of hydrogenation of alkenes.
- Q: the heterogenous catalyst ZSM-5 IS used to convert ?
- Zeolite-based heterogeneous catalysts are used by industrial chemical companies in the interconversion of hydrocarbons and the alkylation of aromatic compounds. A very good example is the zeolite ZSM-5. This zeolite, developed by Mobil Oil, is an aluminosilicate zeolite with a high silica and low alumininum content. Its structure is based on channels with insecting tunnels. The aluminium sites are very acidic. The substitution of Al3+in place of the tetrahedral Si4+ silca requires the presence of an added postive charge. When this is H+, the acidity of the zeolite is very high. The reaction and catalysis chemistry of the ZSM-5 is due to this acidity. The ZSM-5 zeolite catalyst is used in the petroleum industry for hydrocarbon interconversion. An example use is in the isomerizations of xylene- from meta to para-xylene. The acidic zeolite promotes carbocation isomerizations. There are two suggested mechanisms for this type of isomerizations. Firstly shape may play a role. Perhaps para-xylene has a shape which allows it to diffuse rapidly through the zeolite structure, whereas as meta-xylene takes longer to pass through the zeolite and thus has more opportunity to be converted into the para-xylene. Secondly, is that the orientation of reactive intermediates within the zeolite channels favors specifically para-xylene.
- Q: Can a catalyst react with a reactant?
- Catalysts are of different categories. There are some reactions, in which only the presence of some compound increases/decreases the rate of the reaction. In other examples, the catalyst do react with the reactants and provide a different path for the reaction. The product is formed and the catalyst is recovered. Not even a single molecule is consumed after the reaction. But if you take a sample while the reaction is going on, you might find a decrease in the concentration of the catalyst. (An example is the use of Mangnese dioxide (MnO2) in the conversion of Potassium Chlorate (KClO3) to Potassium Chloride and oxygen. The MnO2 added at the initiation of the reaction is in form of crystals and at the end of the reaction it is recovered as finely divided powder. This simply shows that MnO2 reacted with KClO3 initially and finally got detached in form of a powder.)
- Q: The last question asked no one answered this question.
- First of all now the most common way to change the ligand.
- Q: What makes an enzyme a catalyst?
- A.hydrogen peroxide. Catalase is an enzyme that functions in the decomposition of hydrogen peroxide to oxygen and water.
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RUBBER VULCANIZING ACCELERATOR MBTS (DM)
- 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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