Rubber Chemcials Rubber Antioxidant NDBC (NBC)

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Tianjin
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25 m.t.
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12000 m.t./month

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Product Description:

NDBC (NBC)

 

Chemical Name:Nickel Dibutyl Dithiocarbamate

Molecular Formula:C 18 H36 N 2 S 4 Ni

Molecular Weight:467

CAS No.:13927-77-0

 

Specifications:

 Item

 

 Specifications

 

Appearance

 

Dark-green Power (Granules)

 

Initial Melting Point, °C Min.

 

83

 

Heat Loss , % Max.

 

0.5

Nickel content , %

 

12.0 - 13.0

 

Residue on 150 µm Sieve , % Max.

 

0.10

Residue on 63 µm Sieve , % Max.

 

0.50

 

Properties: Dark-green Power. Density is 1.26g/ cm3 . flashing point is 260°C. Soluble in chloroform, benzene and carbon bisulfide , a little soluble in acetone, insoluble in water.

 

Applications: Mainly use in styrene- butadience rubber, chloroprene rubber and chlorosul-fonated polyethylene rubber. Avoiding the rubber crack for the sunshine and ozone, promoting the heat-resistant of chloroprene rubber and chlorosul-fonated polyethylene rubber. In plastic industry, it can be used as stabilitant and ozone-resistant agent for high polymer materials. It has advantage of stability for polypropylene fibre , thin film and narrow belt, but it will make the products appear yellow-green color. The use level is 0.30.5%. NDBC is regulated for use in articles in contact with food as specified.

 

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:The catalyst can change the chemical reaction process, why is it wrong?
No, only for the length of time
Q:How does the chemical equation calculate the quality of the catalyst?
So the reactant mass is equal to the quality of the product, with the quality of conservation
Q:What is chemical adsorption and its relationship with heterogeneous catalysis
The catalytic cycle includes five steps: diffusion, chemical adsorption, surface reaction, desorption and reverse diffusion.The chemical adsorption is an important part of the heterogeneous catalysis process, and the adsorption of the reactants on the catalyst surface,
Q:Catalyst & an exothermic reaction?
A catalyst by its very nature increases the rate of reaction by binding to a reactant, hence changing its shape and reactivity with other reactants. However, the catalyst is neither consumed nor will it change the chemical shape of the products.
Q:Which branch of chemistry or what specialty can study the catalyst
Inorganic Chemistry: Preparation, Synthesis, Structure and Catalytic Reaction of Inorganic Catalysts and Catalyst Carriers
Q:Several experiments were carried out using catalysts
Hydrogen peroxide in the manganese dioxide as a catalyst for decomposition reaction: 2H2O2 == MnO2 == 2H2O + O2 ↑ (laboratory oxygen principle)
Q:How does active charcoal catalyze in some chemical reactions?
Generally not, but it can be used as a catalyst carrier
Q:The role and significance of chemical catalysts
To speed up or slow down the chemical reaction is to make the chemical reaction more direct, simple and straightforward to adopt
Q:Can a catalyst be present in the rate equation?
Any reaction with a finite amount of reactants has a half-life, whether it's first order, second order, zero order or complex order. The half-life (t½) is defined as the time taken for the reaction to go half-way to completion. If the reaction is: A + B ---products and A is in excess, then t½ will be the time taken for half of B to be used up. For all reactions, then, you get a decay curve. For zero-order reactions, this 'curve' is a straight line, but for all other orders, the curve is an actual curve and it is quite difficult to distinguish, by visual inspection alone, whether it is exponential (indicating a first-order reaction) or hyperbolic (indicating a second or higher order reaction).
Q:Brief introduction of enzyme as biocatalyst and general chemical catalyst and its personality
can only change the rate of chemical reaction, do not change the equilibrium point of the chemical reaction, the enzyme itself does not change before and after the chemical reaction (3) can reduce the chemical reaction of the activation energy The

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