RUBBER VULCANIZING ACCELERATOR NOBS (MBS)

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Tianjin
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25 m.t.
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12000 m.t./month

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Product Description:

RUBBER VULCANIZING ACCELERATOR NOBS(MBS)

Chemical NameN-Oxydiethylene-2-Benzothiazole Sulfenamide
 Molecular formula: C11H12N2S2O
 Molecular Weight:253.35
CAS NO. : 102-77-2 
Executive standardGB/T 8829-2006
Specification: 


Item 

Index

High-class products

First-class products

Acceptable end-product

Appearance
(Visual inspection)

Faint yellow or orange granules 

Initial M.P, oC        ≥ 

81.0

80.0

78.0

Loss on drying, %     ≤ 

0.40

0.50

0.50

Ash, %                    ≤ 

0.20

0.30

0.40

Insoluble in Methanol%        ≤

0.50

0.50

0.80

Free amine,%        ≤ 

0.50 

Purity,%                 ≥ 

95.0 

Properties: Faint yellow to brown lamellae. 80°C melting point.soluble benzene; carbon tetrachloride; ethyl acetate; ethanol, soluble in dichloromethane; acetone, less petrol, do not dissolve in water. Heating gradual decomposition. 

ApplicationIt'after-effect quick accelerator. Scorching time is longer and the processing safety is good.

Packing: 25kg paper bag inner with PE bag

Properties: The product should be stored in the dry and cooling place with good ventilation . The product should be avoid hot sunshine. 

 


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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:The properties of scandium
Sci-Scandium (Sc) Basic knowledge Introduction In 1879, Swedish chemistry professor Nelson (LFNilson, 1840 ~ 1899) and Clive (PTCleve, 1840 ~ 1905) were almost simultaneously in rare mineral silica beryllium yttrium and black The mine found a new element. They named this element "Scandium" (scandium), ...
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:CO and NO react under the action of a catalyst to generate chemical formulas for CO2 and N2.
2CO + 2NO = catalyst = 2CO2 + N2
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:When there is a catalyst in the chemical equation, it is not necessary to match the atoms of the catalyst
The habit of writing is not to write the catalyst involved in the equation, it is usually written in the equation above the equal or below
Q:Biology Question - Catalysts?
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
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Because the catalyst in the chemical reaction before and after the quality and chemical properties have not changed, so in the chemical reaction can be reused.
Q:High school stage which organic chemical reactions do not use catalyst
Olefins, alkynes, making bromine water, potassium permanganate fade.
Q:Effect of catalysts on reaction rate??
A catalyst provides an alternative route for the reaction, (maybe more steps than previously), but each step having a lower activation energy than the original uncatalysed reaction. This means that although there will be the same number of collisions per second (if the reaction is performed at the same temperature as before), a greater fraction of those collisions will result in a reaction - so there will be more reactions per second. In the case of a heterogeneous catalyst - e.g. a solid surface the change is that the first step is a bond to the surface which waekens some of the bonds in the reactants - again making a greater fraction of reactions result in reaction.

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