Rubber Chemcials Rubber Antioxidant MODEL MB

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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:

MB

Chemical Name:2- Mercaptobenzimidazole

Molecular Formula:C 7 H 6 N 2 S

Molecular Weight:150.2

CAS No.:583-39-1

Specifications:

 

Item

Specifications

High Grade

1st Grade

Qualified

Appearance

 Light-yellow or white Power crystals (Granules)

Initial Melting Point°C Min.

295.0

290.0

285.0

Heat Loss, % Max.

0.30

0.40

0.50

Ash, % Max.

0.30

0.40

0.50

Residue on 150 µm Sieve % Max.

0.30

0.40

0.50

 

Properties: Light-yellow or white Power crystals, bitterness, relative density is 1.42 ± 0.02g/cm3 , soluble in alcohol, acetone and ethyl acetate, difficully soluble in gasoline petrol and dichloromethane, insoluble in carbon tetrachloride, benzene and water, non-toxic.

 

Applications: Antioxidant MB can effectively protect the pollution of copper and deal with the bad effect of over-vulcanization. It has an acation of delay to the accelerator M, DM, TMTD, etc. There are better actions when it is used with antioxident . Change less in color, it can be used in wire, cable and transparent or color rubber products and it also can be used as heat stabilizer of polyethylene and polypropylene.

 

Packing: Coextruded paper bags lined with polyethylene film bags. Net weight 25 kg per bag.

 

Storage: Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.


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Q:Which chemical reaction is added to the catalyst in order to slow down the reaction
CaC2 and water reaction to ethylene plus salt water (slow chemical reaction rate)
Q:Is there a catalyst in the chemical shop?
If it is manganese dioxide what is sold because it is not dangerous not expensive
Q:What is the principle of catalyst reaction rate in chemical reactions?
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:why is palladium/platinum a good catalyst?
Palladium and platinum are good catalysts because they _adsorb_ certain molecules, especially gases. Adsorption is NOT the same as _absorption_. Adsorption is a process by which a chemical (gases or liquid) physically becomes attached to the _surface_ of an adsorbate (a solid). Once gas molecules are adsorbed on the surface of a catalyst, they are much nearer each other and more likely to react. Absorption is a process by which a gas or liquid is incorporated throughout the volume of an absorbate (a solid), rather than just on the surface. The fact the palladium happens to _absorb_ hydrogen molecules well probably has little to do with its function as a catalyst and is probably just a coincidence. In fact, two of the main reactions in a catalytic converter don't involve molecules with hydrogen atoms at all. On the other hand, WHY platinum and palladium are good catalysts are a mystery. Presumably, they are good at enhancing the Van der Waals forces that cause adsorption with other molecules, but WHY the platinum family of metals do this better than other metals is not fully understood (I don't think).
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:Which of the following are true about catalysts?
1 (I don't know about 2), 3, 5, 6, 8 are true.
Q:enzymes and catalyst are....?
enzymes help biochemical reactions proceed at a faster rate than normal in a physiological system, catalysts or sometimes referred to as subunits, metals and other ligands, bind enzymes, and can have a positive and negative effect on the rate of a reaction. search them on wikipedia!
Q:What is a catalyst?
The catalyst can change the reaction rate (either fast or slow), but the catalyst itself is not affected before and after the reaction, that is, the quality of the same, the chemical nature of the same, itself has not changed.
Q:What is the effect of the catalyst in chemistry?
Changing the rate of reaction can speed up the reaction and slow down the rate of reaction
Q:What are the examples of chemical catalysts used in life?
Clothing. "New synthetic fiber made of clothing, soft and comfortable and cheap and durable. Cloth from natural fibers to man-made fibers, and then to the development of synthetic fibers, dyes from the original natural dyes to the current synthetic dyes, reactive dyes , All reflect the contribution of chemistry to the development of clothing, chemical clothing from the initial cover utility, into today's beautiful, convenient, with a special function of the utility, it greatly enriched the style of clothing, material, use

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