Rubber Chemicals RUBBER VULCANIZING ACCELERATOR MBT (M)

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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 MBT(M)

 

Chemical Name:2-Mercaptobenzothiazole
Molecular Formula:C7H5NS2

Molecular Weight:  167.26 
CAS NO. : 149-30-4
Executive standard:GB/T 11407-2003
Specification: 


Item 

Index 

High-class products

First-class products

Acceptable end-product

Appearance(Visual nspection)

Light yellow or greyish-white powder, granules 

Initial M.P, oC     ≥

173.0

171.0

170.0

Loss on drying, % ≤

0.30

0.40

0.50

Ash, %                ≤

0.30

0.30

0.30

Residues on 150μm sieve,%            ≤

0.00

0.10

0.10

Properties: 

It is Light yellow or off-white powder, granules with a little osmyl and taste bitter. The density is 1.42-1.52, Melting point above 171oC,Soluble in ethyl acetate, ethanol, solution of NaOH and baking soda,soluble ethanol ,dichloromethane,ethylether and choroform slightly soluble in benzene, insoluble water and gasoline. Good storage stability. lower explosion limit is 21g/m3.

 

Application: 

Used as an acid accelerator currently and a medium fast primary accelerator. Imparts excellent aging properties when used both alone and in combination with DM, TMTD and many other basic accelerators for higher activity. Its accelerative temperature is low and easily be dispersed with lower pollution. Mainly used in the manufacture of tires, tubes, foot wear rubber belts and hoses etc.

 

Packaging: 

25kg plastic woven bag, paper with plastic film bag, Kraft paper bag or jumbo bag

 

Storage:

 Keep container tightly closed in a cool, well-ventilated place. The recommended max. 

storage life is 2 years when stored under normal conditions.

The product could be ultra fine powder based on customer accurate quirement.

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Q:I opened catalyst control center and now when i full screen a youtube video it doesnt work?
on the backside suitable hand corner of the small reveal, there's a field with a smaller field in it (suitable of the quantity), press that, it provides you with the finished reveal. you could press the comparable button once you opt for to bypass decrease back. The button would have a crimson X in it this time.
Q:TEN POINTS!! How is the catalyst affected by vinegar?
The catalyst is affected by vinegar because vinegar is acidic meaning there are more H+ ions. This alters the charges on the R groups of the amino acid residues of the enzyme molecule. The bonds that help maintain the conformation of the enzyme molecule which is ionic will therefore, be disrupted and the binding of substrate will be affected. However, if pH is restored to optimum pH, the maximum activity of the enzyme will be restored but this is only if the pH was only altered by a small extent. If pH is altered by a large extent, the conformation of the enzyme molecule will be severely affected causing it to denature. The catalyst is affected by heat because excessive heat disrupts the intermolecular bonds which stabilise the secondary and tertiary structure of an enzyme molecule(the enzyme molecule has a tertiary structure). The enzyme molecule unfolds and the precise shape of the active site is lost. This loss of structure and function is irreversible.
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:A catalyst elevates the rate of a reaction by?
lowering the activation energy needed for the reaction to occur.
Q:What is the chemical nature of the enzyme?
The difference between the enzyme and the general protein is that the enzyme is a protein with a special catalytic function. Similarly, the enzyme, like other proteins, consists mainly of amino acids, with one, two, three and quaternary structures, and the same enzyme as other proteins The composition of the enzyme can be divided into two types: simple protein and binding protein. Some enzymes are only protein, its activity depends on its protein structure, such enzymes are simple protein; other enzyme active ingredients in addition to containing protein, but also There are some small molecules that cofactor, the two together to be active, such enzymes belong to the binding protein.The protein part of the protein is called the enzyme protein, non-protein part called the cofactor
Q:What are the examples of chemical catalysts used in life?
The use of new synthetic materials makes life more comfortable. Only wood, sand and grapes are natural building materials, but they need to be combined and protected with synthetic chemicals. Cement is a chemical product, As the adhesive used in the laminate and the metal used in the nail are chemical products, the glass is made by the chemist, and the improved product, such as heat-resistant glass (trade name Pyrex glass), becomes more tough. Paint is chemist design and creation, and many modern solid materials are also the same. Plastic is synthetic, they are used in kitchen and bathroom utensils, also used in the name of the product called Formica bakelite and its related materials, beverage bottles, Cutlery and utensils. Porcelain is made by chemists and used in kitchen and bathroom sinks and other fixtures. Metal is made of chemical changes made from ores. Aluminum was once a laboratory treasure, but used An electrochemical method, which now can be easily made from alumina, at least a portion of the carpet and decorative fabric used for the use of synthetic fibers and synthetic dyes to color. Freezer and air conditioner with special chemicals as coolant ; Gas and gas stoves can be used syngas or natural gas, the combustion process is still the chemical change.Our room with gas or oil industry to produce fuel to heat, this fuel is from the natural crude oil refining and chemical We have made use of synthetic chemical products and materials made in the chemical processing industry, such as plaster or wall panels, outer panels and roof panels, as well as tiles and carpets, to heat our buildings. The stove itself and the distribution of heat The pipes are made of chemical products - metal, insulating materials and ceramics. The current enters the home through the copper wire of the outsourced insulator, both of which are products of the chemical processing industry
Q:Comparison of biocatalysts with chemical catalysts!
4, some of the catalytic activity of biological enzymes and related factors .5, most of the enzymes are proteins, which will be high temperature, strong acid, alkali and other broken
Q:Chemical catalyst poisoning situation
In the reactants or catalyst mixed with a small amount of material, so that the catalyst catalytic capacity of a sharp decline or even loss, this phenomenon is called catalyst poisoning. For example, in the synthesis of ammonia feed gas containing CO, CO2 and H2S, PH3, water vapor and other impurities, can make iron catalyst poisoning; contact with the system of sulfuric acid, if arsenic and selenium oxide (As2O3, SeO2), can make vanadium catalyst Loss of activity. Therefore, it is necessary to purify the feed gas, prevent the poisoning of the catalyst, and also reduce the corrosion of the equipment. The phenomenon of catalyst poisoning is sometimes temporary, the removal of toxicants, the effectiveness of the catalyst can still be restored; sometimes it is permanent, without chemical treatment can not restore catalytic performance.
Q:What is the nature of the chemical catalyst?
Can only speed up or slow down the reaction rate, can not change the reaction balance,
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

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