RUBBER VULCANIZING ACCELERATOR DCBS (DZ)

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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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Product Description:

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 standardQB/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.

 


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Q:how do catalysts work?
Catalysts lower the activation energy of a given chemical reaction, thus speeding it up
Q:How does the catalyst generally add to the organic chemical reaction?
In the case of heterogeneous catalysis, the specific surface of the catalyst, in addition to the activity of the catalyst, is an important factor in determining the reaction rate, which means that the specific surface for catalysis is large and the reaction is as fast as the whole. So the overall principle in understanding the activity of the premise of the catalyst, would like to quickly add a little more.
Q:Chemical catalyst poisoning situation
In the reactants or catalyst mixed with a small amount of material, so that the catalyst catalytic capacity of a sharp decline or even loss, this phenomenon is called catalyst poisoning. For example, in the synthesis of ammonia feed gas containing CO, CO2 and H2S, PH3, water vapor and other impurities, can make iron catalyst poisoning; contact with the system of sulfuric acid, if arsenic and selenium oxide (As2O3, SeO2), can make vanadium catalyst Loss of activity. Therefore, it is necessary to purify the feed gas, prevent the poisoning of the catalyst, and also reduce the corrosion of the equipment. The phenomenon of catalyst poisoning is sometimes temporary, the removal of toxicants, the effectiveness of the catalyst can still be restored; sometimes it is permanent, without chemical treatment can not restore catalytic performance.
Q:High chemistry: Does the catalyst affect the heat and heat of the reaction?
No effect
Q:Catalyst for Fuel cell car?
Q:How do enzymes / catalysts in biology and chemistry in high school stage give different feelings?
I do not know the main high school teachers have done with fresh chicken liver grinding solution and ferric chloride solution compared to the decomposition of H2O2 catalytic efficiency of the experiment, the result is ferric chloride plus H2O2 slowly take the bubble, add fresh chicken cups Quickly take bubbles and liquid spill. Indicating that the enzyme is a catalyst, and the catalytic efficiency is far higher than the inorganic catalyst.
Q:Brief introduction of enzyme as biocatalyst and general chemical catalyst and its personality
enzyme inactivation (4) enzyme activity can be timely and effective regulation (5) the role of the enzyme conditions are more moderate (6) most of the enzyme (1) the catalytic efficiency is very high (2) Of the catalytic activity is often associated with coenzymes, auxiliary or metal ions, and some enzyme activity also need RNA as a cofactor Caixing, such as telomerase
Q:Chemical catalyst in several ways
Two, can speed up and slow down
Q:Why the amount of catalyst is too small will make the chemical reaction rate slowed down
Can significantly change the reaction rate and its own chemical properties and quantity in the reaction before and after the basic material unchanged. The catalyst has a positive catalyst (i.e., accelerates the reaction rate) and a negative catalyst (i.e., reduces the reaction rate), and generally does not specifically refer to both the positive catalyst.
Q:Is the catalyst in the field of inorganic chemistry?
In particular, the chemical and homogeneous catalysis of inorganic chemistry has deep origins. Inorganic chemistry, oxides (such as metal oxides), family elements (such as the chemical behavior of transition metal elements) can be provided for catalytic science Support and guidance.

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