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:The role of catalyst in chemical reactions
The role of the catalyst is to change the reaction required to achieve the activation energy, can reduce the activation energy is called positive catalyst (that is, usually the meaning of the catalyst), to improve the activation energy is negative catalyst
Q:how do catalysts work?
A catalyst is something that allows a reaction to occur but is not actually used up in the reaction. It merely provides the surface on which the chemicals react. There is a demo using two paper clips and a piece of paper. The paper is folded and the two clips are attached to the paper. When the free ends of the paper are pulled apart the two paper clips somehow overlap each other and become joined. It is a good demo for a catalyst, but I cannot explain how to fold the paper.
Q:What reactions need catalysts?
Reactions that have high Activation Energy need catalysts to speed up reactions. These reactions aren't spontaneous since the reactants do not have enough energy to overcome the activation energy barrier. Catalysts are compounds that speed up reactions by providing an alternative pathway for the reaction. It is a common misconception that catalysts lower the activation energy. It doesn't actually lower the activation energy, instead it provides an alternative pathway with lower activation energy. For example, breakdown of hydrogen peroxide happens in nature but, relatively slowly. When you add a little bit of manganese dioxide, the breakdown happens a lot faster. Another example is, breakdown of glucose in the body. It is facilitated by an enzyme called amylase (or carbohydrase). An industrial example is the use of vanadium pentoxide (V2O5) in the Contact process, where SO2 is converted to SO3 in the presence of V2O5. Hope that helps!
Q:What is the chemical vinyl chloride and benzene plus catalyst?
Ethylbenzene plus hydrogen chloride
Q:I opened catalyst control center and now when i full screen a youtube video it doesnt work?
Catalyst control center? You, my friend, have a Radeon graphics card. What's happening is that somewhere you have Anti-Aliasing turned on. Go back into your catalyst control center and anywhere where there is an option to 'use application settings'- select it. It's supposed to improve your graphics quality, but there are a lot of bugs with it on a whole bunch of applications and games- including Minecraft. Oh, and as for the youtube thing- alt+tab should show you where your video has disappeared to. Yes, I know- it's bloody weird, but flash is buggy as heck, and Radeon graphics cards are weird; I should know- I have one too! That should do the trick! If it doesn't work then there's likely an extra option somewhere that you haven't ticked to 'use application settings'.
Q:Compare and contrast enzymes and catalysts?
Enzymes are actually biological catalysts composed of hundred of amino-acids, which are produced by living organisms. They are responsible for a number of reactions and biological activities in plants, animals, human beings and micro-organisms. There are also chemical catalysts that interact with other reactants and modify them without being changed themselves.
Q:What is the catalyst for industrial aluminum electrolysis?
2AlCl3 (melt) = power = 3cl2 + 2al by-product is chlorine
Q:Junior high school chemistry - chemical reaction before and after the quality and chemical properties of the material must be the catalyst?
It is not always possible that the equivalent reaction, i.e. one or more of the reactants, is the same as the relative atomic mass of one or more of the products and the coefficients in the chemical equation are the same
Q:What is the nature of the catalyst before and after the chemical reaction?
Chemical properties do not change better. Some properties of the catalyst may change before and after the reaction. If the experiment proves, the state of the catalyst before and after the reaction changes, and some changes from powder to powder.
Q:What are catalysts and enzymes?
enzymes are like chemical scissors that break up starch inside your body they work best at 37'c which is body temperatur i think they are in the stomach? don't know for sure hope this helped as for catalysts i dont know

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