2-Benzothiazolesulfenemorpholide

The chemical structure of 2-benzothiazole hyposulfonyl morpholine (2-Benzothiazolesulfenemorpholide) is an example of the structure of organic compounds. Its structure contains a benzothiazole parent nucleus, which is fused from a benzene ring and a thiazole ring. The sulfur atom of the benzothiazole ring is connected to the sulfenoyl group (-S-), and the sulfenoyl group is connected to the morpholine group.
The morpholine group is a six-membered heterocycle containing nitrogen and oxygen, and its nitrogen atom is connected to the sulfur atom of the sulfenoyl group. This structure endows the compound with unique chemical properties and reactivity. The conjugated system of the benzothiazole part affects the distribution of electron clouds, which in turn affects its physical and chemical properties. The existence of the morpholine ring also contributes to the spatial structure and polarity of the molecule. The characteristics of its overall structure enable 2-benzothiazole hyposulfonyl morpholine to exhibit specific properties and uses in the rubber industry and other fields, such as as as a rubber vulcanization accelerator. Through its structural characteristics, it participates in the vulcanization reaction and affects the rubber cross-linking process and product performance.

2-Benzothiazole hyposulfonyl morpholine, which is widely used. In the rubber industry, it is an extremely important vulcanization accelerator. During the vulcanization process, it can significantly accelerate the vulcanization rate of rubber, shorten the vulcanization time, and then improve production efficiency. At the same time, it can also effectively improve the physical and mechanical properties of vulcanized rubber, such as improving the tensile strength, wear resistance and anti-aging properties of rubber, making rubber products more durable.
Furthermore, it is also used in the plastics industry. It can be used as an auxiliary in plastic processing to enhance the stability and processing properties of plastics. It can prevent plastics from degrading due to high temperature, oxidation and other factors during processing, and ensure the quality and performance of plastic products.
In addition, in the synthesis of some special chemicals, 2-benzothiazole hyposulfonylmorpholine also plays a key role. It can participate in many organic synthesis reactions as an intermediate, providing an important basis for the preparation of other chemicals with special properties. With its unique chemical structure, it can react with other compounds to generate new compounds with specific functions, meeting the needs of different industries for special chemicals.

2-Benzothiazole sulfomorpholine (2-Benzothiazolesulfenemorpholide), an organic compound, is often used as a vulcanization accelerator in the rubber industry. Its physical properties are as follows:
Viewed, this substance is white to light yellow powder, uniform color, no visible impurities. Its odor is specific, although not pungent and unpleasant, it also has a unique smell, which can be easily identified by those who are familiar with it.
When it comes to solubility, 2-benzothiazole sulfomorpholine is slightly soluble in water. Due to the strong hydrogen bond between water molecules, the ability of this compound to form hydrogen bonds with water is limited. However, it is soluble in organic solvents such as acetone, benzene, and dichloromethane. In acetone, it can be well dispersed and dissolved to form a homogeneous solution, which makes it possible to apply it in solution form to specific process steps.
In terms of melting point, it is between 130 and 140 ° C. The melting point is the inherent characteristic of the substance. In this temperature range, the solid state of 2-benzothiazole sulfimoroline absorbs heat, the molecular thermal motion intensifies, and the lattice structure is destroyed, so it turns into a liquid state. This melting point characteristic is of great significance in its production, processing and quality control. Its purity can be judged by melting point measurement.
Its density is about 1.34 - 1.40g/cm ³. Density, as a basic property of a substance, reflects its mass per unit volume. This density value shows that its density is higher than that of common light organic matter. When storing, transporting and mixing with other substances, it is necessary to consider the precipitation and stratification caused by its density.
In addition, the powder of 2-benzothiazole hyposulfonyl morpholine has good fluidity. Although it is not very easy to flow like fine sand, it can move relatively smoothly in the container under moderate external force, which is conducive to its measurement and transportation operations in industrial production.

2-Benzothiazole hyposulfonyl morpholine (2-Benzothiazolesulfenemorpholide) is a commonly used accelerator in the rubber industry. There are many preparation methods. The following are the common ones:
** Using 2-mercaptobenzothiazole (MBT) as the starting material **:
- ** Oxidation method **:
- This is a common preparation method. First mix MBT and morpholine in an appropriate solvent (such as toluene, xylene, etc.), and then add a suitable oxidizing agent. Commonly used oxidizing agents include hydrogen peroxide, peracetic acid, etc. During the reaction, the reaction temperature and the dropwise acceleration of the oxidizing agent need to be strictly controlled. Generally speaking, the temperature should be controlled at 30-60 ° C. Taking hydrogen peroxide as an example, its concentration is usually 20% - 30%. Under this condition, the sulfhydryl group of MBT is oxidized and reacts with morpholine to form 2-benzothiazole sulfoxymorpholine. After the reaction is completed, the solvent is removed by distillation, and then purified by recrystallization and other means to obtain a high-purity product.
- The reaction principle is: the sulfhydryl group of MBT first forms an active intermediate under the action of an oxidizing agent. This intermediate rapidly undergoes a nucleophilic substitution reaction with the nitrogen atom of the morpholine, and then generates the target product.
- ** Chlorination method **:
- MBT is first chlorinated with chlorine gas to generate 2-chlorobenzothiazole. This reaction is usually carried out in an acidic medium (such as hydrochloric acid), and the temperature is controlled at 0-10 ° C. After that, 2-chlorobenzothiazole reacts with morpholine under basic conditions (such as sodium hydroxide solution) to form 2-benzothiazole hyposulfonyl morpholine. After the reaction is completed, the impurities are removed by extraction, washing with water, drying, etc., and then purified by vacuum distillation or recrystallization.
- The principle is that: chlorine gas and MBT undergo electrophilic substitution, and chlorine atoms are introduced; the nitrogen atom of the post-morpholine undergoes nucleophilic substitution of the chlorine atom of 2-chlorobenzothiazole to form the target product.
** Using benzothiazole as the starting material **:
- ** First sulfonation and reamination **:
-benzothiazole first reacts with sulfonating agents such as fuming sulfuric acid or chlorosulfonic acid, and introduces a sulfonyl group at the 2-position of benzothiazole to generate 2-benzothiazole sulfonic acid or its derivatives. This reaction temperature is relatively high, usually at 100-150 ° C. Afterwards, the 2-benzothiazole sulfonic acid derivative reacts with morpholine under appropriate conditions to form 2-benzothiazole hyposulfonylmorpholine. After the reaction, it is separated and purified through neutralization, filtration, crystallization and other steps. < Br > -The reaction mechanism is: the sulfonating agent makes benzothiazole undergo electrophilic substitution sulfonation reaction; the post-morpholine undergoes nucleophilic substitution with sulfonyl group to form the target product.

2-Benzothiazole hyposulfonyl morpholine requires attention to many matters during use.
First, it is related to storage. This agent should be placed in a cool, dry and well-ventilated place, away from fire and heat sources. Because if it is heated, it may cause changes in properties, affect the use effect, or even cause danger. Just like ancient grain storage, it is necessary to choose a dry and ventilated place to prevent mildew and spoilage. The same is true for this agent.
Second, about operation. When using, be sure to follow strict operating procedures. Operators should wear appropriate protective equipment, such as gloves, goggles, etc. Because the substance may be irritating to the skin and eyes, if it is not well protected, it will be like a soldier without armor and vulnerable to damage.
Third, it involves mixed use. Do not mix with other chemicals at will. Complex chemical reactions may occur between different chemicals, or reduce the effect, or produce harmful substances. Drugs with different medicinal properties should not be indiscriminately matched to avoid changes.
Fourth, about environmental impact. During use, pay attention to the protection of the environment. Avoid its leakage into the environment. If it accidentally leaks, proper measures should be taken immediately to prevent pollution to soil, water sources, etc. This is like cherishing your home and not allowing it to be contaminated.
Fifth, the dose should be used. It needs to be precisely controlled and administered according to specific needs and instructions. If the dose is too small, it will be difficult to achieve the desired effect; if the dose is too large, it will be wasteful or cause other adverse consequences. Just like cooking seasoning, the amount of seasoning is related to the taste.
In short, the use of 2-benzothiazole sulfimorline should be used with caution to ensure safety and effectiveness.