RUBBER VULCANIZING ACCELERATOR·DPG (D) MODEL

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Tianjin
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Min Order Qty:
25 m.t.
Supply Capability:
12000 m.t./month

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Product Description:

 RUBBER VULCANIZING ACCELERATOR-DPG(D)

Chemical Name: Diphenyl guanidine
Molecular Formula: C13H13N3          

Molecular Weight211.27 
CAS NO: 102-06-7 
Executive standardQ/CNPC55-2001 
Specification


Item 

Index

 First-class products

 Acceptable end-product

Appearance(Visual inspection)

white powder

 Greyish-white powder

 Initial M.P, oC               ≥ 

145.0

144.0

Loss on drying, %            ≤ 

0.20

0.30

Ash, %                            ≤ 

0.30

0.40

Residues on 150μm sieve,%
                                        ≤ 

0.10

0.10

Residues on 63μm%     ≤ 

0.50

0.50

Properties: Grayish-white or white powder notaste, nontoxic . Density is 1.13--1.19. Soluble in acetone, ethyl acetate, benzene, alcohol, slightly soluble in carbon tetrachloride Insoluble in water  and gasoline.

Application: mainly used for natural rubber syntheic the medium-speed accelerator. Used in thiazoles, Autumn Lamb, and the second category of iodine acid catalyst for the active agent, and agent for DM, TMTD used, can be used for continuous vulcanization. Mainly used in the manufacture of tires, plastic sheet, soles and industrial products, rigid and thick plastic products. 

Packaging: Polypropylene knitted bags lined with polyethylene bags.Net weight 25kg per bag. 

Storage: Keep container tightly closed in a cool, well-ventilated place. The recommended maximum storage life is 2 years when stored under normal conditions. 

Note: The product could be oiled and pelleted apon customer request.

 

RUBBER VULCANIZING ACCELERATOR·DPG (D) MODEL

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Q:Effect of Catalyst on Chemical Reaction Rate
The catalyst can reduce the activation energy of the chemical reaction and allow the reaction to take a shortcut
Q:what is a catalysts and how can they be useful?
A catalyst is a substance that speeds up the rate of a chemical reaction with itself being chemically unchanged at the end of the reaction. They are useful as they help to lower the minimum amount of energy needed ( also known as activation energy) to start the reaction. Hence, by lowering the activation energy of the reaction, they help to speed up the rate of reaction. For example, in the Haber process for the manufacture of ammonia, the catalyst iron is added to speed up the rate of reaction between hydrogen gas and nitrogen gas. Otherwise, the reaction would have proceeded much more slowly. Another example is the catalyst nickel used in the manufacture of margarine and vanadium (V) oxide for manufacturing sulfuric acid. As catalyst remain chemically unchanged after a reaction, they can be reused again and hence, they are required in minute amounts. An example is the washing powder used in washing clothes, they help to remove food stains by digesting the proteins in food. They can be reused after each reaction and hence, you do not need to add in the whole packet of washing powder but only a few spoonful.
Q:How are a catalyst and an intermediate similar? How are they different?
A catalyst speeds up the rate of a reaction by lowering the activation energy barrier which is, presumably, the energy required to achieve the reaction intermediate. Catalysts are also not consumed in the reaction, they are regenerated towards the end. A reaction intermediate is a configuration that a molecule takes prior to achieving it's lowest energy form which would signify the end of the reaction. Intermediate usually are hard to isolate because of the incentive to go to the most stable configuration. How are they different? A catalyst is not a part of the reaction product and it doesn't get consumed. An intermediate in a reaction is transformed into the product. How are they similar? Well, catalysts drive the reaction and make it easier for the reaction for follow through. Since intermediates are high energy and thermodynamics tells us that low energy is favorable, the incentive for a high energy intermediate to drive down to it's stable for can also drive a reaction. I hope that helps. I hope it makes sense.
Q:Compare and contrast enzymes and catalysts?
enzymes are a type of catalyst
Q:No one knows the expression of the catalyst and the chemical expression of the acridine
In organic reactions, the catalyst is complex and consists of several or more. Write Chinese characters directly.
Q:High school stage chemical catalyst
See what is the reaction of the ah, sulfuric acid is commonly used catalyst, simple words, such as iron is also commonly used to
Q:catalyst..........?
H+ is the ion contained in acids.... When acids are dissolved in water (H+)+(H2O)=H3O+ Both are the same......
Q:Does all chemical reactions have a catalyst?
Not some reaction without catalyst
Q:Why are transition metals more likely to be catalysts?
there are so much catalysts made up of transition metals. because one of the characteristics of transition metals is can be made to catalyst. one of the catalyst that is mostly used is iron fillings which is used as catalyst to make ammonia from nitrogen gas and hydrogen gas.
Q:Is it not the rate to accelerate the addition of the catalyst to the catalyst, and that is why the balance does not move
If the reaction before the catalyst, you can speed up the reaction rate, that is to achieve the balance required to reduce the time, but to balance the system when the same concentration

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