RUBBER VULCANIZING ACCELERATOR ·ETU(NA-22)

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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 ·ETU(NA-22)

 

Chemical Name: Ethylene thiourea
Molecular Formula: C3H6N2S              
 Molecular Weight: 102.17
CAS NO. : 96-45-7
Executive standard: HG/T2343-92 
Specification: 

Item

Index

Top Grade

First grade

Qualified Grade

Appearance
(Visual inspection)

white powder 

 Initial M.P, oC        ≥

195.0

193.0

192.0

Loss on drying, %   ≤

0.30

0.30

0.50

Ash, %                  ≤

0.30

0.30

0.50

Residues on 150μm sieve, % ≤               

0.50

0.10

0.10

Properties: White powder. Little bitter. Density is 1.42-1.43. Soluble in wateralcohol, ethylene glycol and pyridine, do not dissolve ether, benzene, chloroform and petroleum ether.  No pollution to final products. Stabilization storage

Application:: The product can be used to chloroprene rubber, Epichlorohydrin rubber, chlorinated polyethylene, etc., are particularly suited to non-curing system of the chlorine-butylamine Hopewell accelerator. Can often 100-500 oC , with the right selection system can be the best rapid curing, and the whole parade security. Its products vulcanized high tensile strength, permanent deformation small for W (54-1 type polychloroprene), a non-curing system into effect significantly. It usually with zinc oxide and magnesium oxide together with the use, mainly for industrial products, and coating lines, shoes and other clothing chloroprene rubber products.

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

Storage: To keep the bags tightly closed in a cool, well-ventilated place at 25 max, to place the goods on the dry wooden shelf at a height of 500px min. And to avoid from moisture, sunshine, light and fires. The recommended max.shelf life is 2 years. 

Note: The product could be ultra fine powder based on customer accurate require. 


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Q:how does the catalyst work (to speed up the reaction)??
catalyst takes the reaction through an alternate path(series of reaxns) which has lower activation energy.hence it speeds up ur reaction
Q:Will the catalyst change the reaction rate in the chemical reaction?
Many of the catalysts are specific in varying degrees, and when added to the chemical reaction system that it can catalyze, it must change the rate of chemical reaction, and of course both positively and negatively catalyzed. Chemical reaction rate, it can not be called a catalyst.
Q:The concept of catalyst in high school chemistry
Change "has a double meaning, that is," speed up "or" slow down. "Some students believe that the role of catalyst is to speed up the chemical reaction rate.In fact, the catalyst also has positive and negative points, positive catalyst can speed up the chemical reaction rate, such as Enzymes in the human body can speed up the digestion of food and so on; and negative catalyst can slow down the rate of chemical reactions, such as rubber products in the antioxidant.
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:Nitrogen and hydrogen in the role of high temperature and pressure catalyst to generate ammonia chemical equation
N2 + 3H2 = catalyst, high temperature and high pressure = 2NH3
Q:The size of △ H in the thermochemical reaction equation is related to the use and unused catalyst
It does not matter
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:Catalyst for Fuel cell car?
Q:why are enzymes called catalysts?
Enzymes okorder.com/...
Q:What is the PTC catalyst in chemistry?
1, polyether chain polyethylene glycol: H (OCH2CH2) nOH chain polyethylene glycol dialkyl ether: R (OCH2CH2) nOR2, cyclic crown ethers: 18 crown 6,15 crown 5, Fine and so on. 3, quaternary ammonium salt: commonly used quaternary ammonium salt phase transfer catalyst is benzyl triethyl ammonium chloride (TEBA), tetrabutyl ammonium bromide, tetrabutylammonium chloride, tetrabutylammonium hydrogen sulfate (TBAB) , Trioctylmethylammonium chloride, dodecyltrimethylammonium chloride, tetradecyltrimethylammonium chloride, and the like. 4, tertiary amine: R4N X, pyridine, tributylamine and the like. 5, quaternary ammonium base (its alkaline and sodium hydroxide similar) soluble in water, strong hygroscopicity. 6, quaternary phosphonium

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