RUBBER VULCANIZING ACCELERATOR TMTD (TT)

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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 TMTD(TT) 

 

Chemical Name : Tetramethyl thiuram disulfide
 Molecular Formula: C6H12N2S4
 Molecular Weight: 240.43
CAS NO. : 137-26-8
Executive standardHG/T 23342007 
Specification: 


Item 

Index

First-class products

Acceptable end-product

Appearance
(Visual inspection)


White, light gray powder or granular 

 Initial M.P, oC             ≥ 

142.0

140.0

Loss on drying, %          ≤ 

0.30

0.30

Ash, %                        ≤ 

0.30

0.30

Residues on 150μm sieve, %                           ≤ 

0.00

0.10

Properties: White, light gray powder or granular. The density is 1.29. Soluble in benzene, acetone, chloroform, CS2 partly soluble in alcohol, diethyl ether, CCI4 insoluble in water, gasoline and alkali with lower concentration. Meeting hot water becomes to dimethylamine  ammonium and CS2. Be sensitive to skin and pneogaster

Application: Can be used as a single accelerator, as a secondary accelerator or as a sulphur donor in most sulphur-cured elastomers. Scorchy and gives fast cure rates. Produces an excellent vulcanisation plateau with good heat aging and compression set resistance in sulphurless and EV cure systems Good color retention is obtained in non-black vulcanisation. A valuable secondary accelerator for EPDM. May be used as a retarder in the vulcanisation of polychloroprene rubber with ETU and also be used as bactericide and pesticide

Packaging: 25kg plastic woven bag, paper with plastic film bag, kraft paper bag.

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 2 years.

Note: The product could be ultrafine powder based on customer accurate requirement.

 

 


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Q:How does active charcoal catalyze in some chemical reactions?
It is a carrier, because its particles are small (micron level, nano-level), has a relatively large surface area, can be loaded on the catalyst to provide more reaction sites. Although called activated carbon, but its catalytic aspects of the relevant business reports.
Q:How does the catalyst affect chemical balance?
Chemical reaction to reactor molecules to reach a certain amount of energy in order to react, this energy is the activation energy of the reaction. While the material energy in nature can be obtained by probability statistics
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:High school stage which organic chemical reactions do not use catalyst
Aldehyde and silver ammonia solution reaction, and the new system of Cu (OH) 2 reaction.
Q:Describe the role of a catalyst..........?
Describe Catalysts
Q:No one knows the expression of the catalyst and the chemical expression of the acridine
If it is potassium permanganate oxygen, the catalyst is only manganese dioxide, so write on the horizontal line MnO2
Q:Chemical reaction plus catalyst on the △ H no effect
Since the catalyst only acts to reduce the activation energy of the reaction and accelerate the reaction rate, it does not participate in the reaction, so that the energy difference between the product and the reactant is not affected,
Q:Chemical common sense about the catalyst
In order to speed up the absorption, speed up the reaction rate
Q:Catalyst & an exothermic reaction?
Catalysts work by providing an (alternative) mechanism involving a different transition state and lower activation energy. The effect of this is that more molecular collisions have the energy needed to reach the transition state. Hence, catalysts can perform reactions that, albeit thermodynamically feasible, would not run without the presence of a catalyst, or perform them much faster, more specific, or at lower temperatures. This can be observed on a Boltzmann distribution and energy profile diagram. This means that catalysts reduce the amount of energy needed to start a chemical reaction.
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

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