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jinlichemical · 2 months ago

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N-ethyl-p-toluene sulfonamide Best Price

Product Description:

N-Ethyl-p-toluene sulfonamide is a white crystalline solid. It is required to have a minimum purity of 99% and a melting point between 58-62°C. The maximum allowed water content is 0.5%, and the colority (APHA) should not exceed 30 Pt/Co units. The chloride ion content is limited to a maximum of 100 ppm, and the ash content should not exceed 0.2%. The acid value (calculated as KOH) has a maximum limit of 1.6 mg/g.

This chemical is commonly used in various industries and applications. It serves as an important intermediate in organic synthesis and finds wide usage in the production processes of pharmaceuticals, agrochemicals, dyes, and polymers.

N-Ethyl-p-toluene sulfonamide exhibits good solubility in organic solvents and has moderate solubility in water. Its compliance with quality standards ensures its stability and usability in various formulations.

Chemical Properties

Molecular Formula: C9H13NO2S

CAS Number: 2042-53-9

Appearance: Colorless to light yellow liquid or crystalline solid

Melting Point: 62-64°C

Solubility: Soluble in alcohol, chloroform, and other organic solvents

The structure of N-ethyl-p-toluene sulfonamide contributes to its versatility in both research and industrial applications.

Applications of N-Ethyl-p-Toluene Sulfonamide

N-ethyl-p-toluene sulfonamide is used in a variety of fields, including pharmaceuticals, organic synthesis, and agrochemicals. Understanding its key applications can help buyers appreciate its value and understand the importance of securing it at the best price.

Pharmaceutical Industry

Antibiotic Synthesis: Sulfonamide-based drugs are important in the treatment of bacterial infections. N-ethyl-p-toluene sulfonamide derivatives are used to synthesize these antibiotics.

Diuretics: N-ethyl-p-toluene sulfonamide is used in the synthesis of drugs that help manage conditions like hypertension and fluid retention.

Anti-inflammatory Drugs: Sulfonamide derivatives are key in the development of medications that reduce inflammation and pain.

Organic Synthesis

Polymer Production: N-ethyl-p-toluene sulfonamide is used as a monomer in the preparation of specialty polymers, which are widely used in coatings, adhesives, and elastomers.

Heterocyclic Compounds: Sulfonamides, including N-ethyl-p-toluene sulfonamide, are involved in the synthesis of heterocyclic compounds that are important in drug discovery and industrial chemistry.

Agrochemical Applications

Herbicides and Pesticides: Compounds derived from N-ethyl-p-toluene sulfonamide are used to create agrochemicals that protect crops from pests and diseases.

Plant Growth Regulators: N-ethyl-p-toluene sulfonamide derivatives can also serve as plant growth regulators, enhancing crop yields and quality.

Safety and Handling of N-Ethyl-p-Toluene Sulfonamide

Health and Safety Precautions: N-ethyl-p-toluene sulfonamide is generally considered to be of low toxicity. However, it may cause irritation to the skin, eyes, and respiratory system. Personal protective equipment (PPE), such as gloves, goggles, and lab coats, should be worn when handling this chemical. In case of accidental exposure, rinse the affected area with water immediately and seek medical attention if necessary.

Fire and Explosion Hazards: N-ethyl-p-toluene sulfonamide is not highly flammable but should be kept away from open flames or high heat sources. Proper storage in a cool, dry area is recommended to prevent decomposition or other hazardous reactions.

Health and Safety Precautions: Proper disposal of N-ethyl-p-toluene sulfonamide and its derivatives is essential to prevent environmental contamination. Follow local environmental regulations when disposing of waste or excess chemical material.

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qibo-new-energy · 1 year ago

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Melting point range of adipic acid

Adipic acid is an organic compound with the formula (CH2)4(COOH)2. It is a white crystalline powder that is mainly used as a precursor for the production of nylon. Adipic acid is also used as a food additive, a plasticizer, and a component of some polyurethanes. In this article, we will explore the melting point range of adipic acid and its implications for its applications.

What is the Melting Point of Adipic Acid?

The melting point of a substance is the temperature at which it changes from a solid to a liquid state. The melting point range is the interval between the onset and the completion of melting. The melting point range can indicate the purity and stability of a substance, as well as its intermolecular forces.

According to EU Method A.1 (Melting / Freezing Temperature), the melting point of adipic acid is 150.85°C. This means that adipic acid starts to melt at this temperature and becomes completely liquid when heated further. The melting point range of adipic acid is not very wide, which suggests that it is a relatively pure and stable substance.

How Does the Melting Point Affect the Properties of Adipic Acid?

The melting point of adipic acid affects its physical and chemical properties, as well as its suitability for different applications. For example, adipic acid has a high solubility in water, which increases with temperature. At 25°C, adipic acid dissolves in water at 24 g/L, while at 100°C, it dissolves at 1600 g/L. This means that adipic acid can be easily dissolved and purified by recrystallization from water.

Another example is that adipic acid has a low vapor pressure, which decreases with temperature. At 18.5°C, adipic acid has a vapor pressure of 0.097 hPa, while at 25°C, it has a vapor pressure of 0.073 mmHg. This means that adipic acid does not evaporate easily and has a low volatility. This makes adipic acid suitable for applications that require high thermal stability, such as nylon production.

What are Some Applications of Adipic Acid?

Adipic acid is mainly used as a raw material for the production of nylon 6,6, which is a synthetic polymer with high strength, elasticity, and resistance to abrasion and chemicals. Nylon 6,6 is widely used in textiles, carpets, clothing, ropes, and industrial materials.

Adipic acid is also used as a food additive (E355) to provide acidity and flavor to some beverages and foods. It can also act as a leavening agent in baked goods and a gelling agent in some desserts.

Additionally, adipic acid is used as a plasticizer to improve the flexibility and durability of some plastics, such as polyvinyl chloride (PVC). It can also be used as a component of some polyurethanes, which are versatile polymers that can form foams, coatings, adhesives, and elastomers.

Conclusion

Adipic acid is an important dicarboxylic acid that has a melting point of 150.85°C. The melting point range of adipic acid affects its solubility, volatility, and thermal stability, which in turn influence its properties and applications. Adipic acid is mainly used for nylon production, but it also has other uses in food, plastics, and polyurethanes.

If you are looking for a reliable Adipic Acid supplier(CAS124-04-9), you can visit our website www.qiboch.com. We supply high quality Adipic Acid with competitive price and fast delivery. We also provide technical support and customer service to ensure your satisfaction. Whether you need adipic acid for industrial or laboratory use, we have the right product for you, contact us today!

#Adipic acid

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baobikhangloi · 2 years ago

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Compare PP and PE plastic, which material is better?

Both PP and PE resins are thermoplastic materials, derived from olefin monomers - a term for the characteristic carbon double bonds in the molecular structure of these monomers. The obvious common origin has given these two plastics many similarities.

So, what is olefin, and the characteristics of polyolefin family resins?

Olefins are a group of hydrocarbons belonging to the alkene family, with the feature of containing a carbon-carbon double bond in the structure. Alkenes include: Propene (C3H6), Butene (C4H8), Pentene (C5H10), Hexene (C6H12), Heptene (C7H14), Octene (C8H16), Nonene (C9H18), Decene (C10H20), …

Polymers made from olefin monomers are called polyolefins or polyalkenes, which are classified as thermoplastics. They are much simpler and easier to manufacture than other plastics, extremely easy to shape, and can be reshaped over and over again, just by repeating the heating, molding, blowing and cooling processes.

Polyolefins are not much different from crude oil in terms of molecular structure. This is both an advantage but also a major drawback, as they have very similar properties to oil and are not fire resistant. But in return, they are considered as the cleanest plastic with a simple and pure structure. Their production does not require the addition of harmful chemicals such as styrene, chlorine or bisphenol A. In addition, most olefins float on water, making polyolefins very easy to distinguish from other synthetic materials, especially during sorting for recycling.

Commercially dominant, the most produced of the polyolefin group are polyethylene (PE) and polypropylene (PP). There are also a number of specialized but less common polyolefins such as polyisobutylene and polymethylpentene...

Polyolefins can appear as oil-like liquids or colorless or white solids, and their properties are mainly determined by their molecular weight and degree of crystallinity. Polyolefins with a low degree of crystallinity (between 0 and 20%) have elastomer-like properties. A moderate degree of crystallinity (between 20 and 50%) is associated with a plastic resin, and a degree of crystallinity above 50% constitutes a hard resin.

Most polyolefins are made by treating monomers with metal catalysts, and the polymerization of this resin is highly exothermic. Polyolefin surfaces will not be effectively bonded together by solvent welding or adhesives, as most of them have excellent chemical resistance, unaffected by common solvents. While they are extremely chemically inert, their strength degrades at very low or high temperatures. Therefore, for plastic films in this group such as PE or PP, heat sealing is a common technique for bonding between layers. However, with the development of modern science, people have successfully developed a number of super adhesives such as cyanoacrylate and acrylate, that can be used to glue these materials.

Both PP and PE plastics, as well as other polyolefins, can be easily processed using common forming techniques such as injection molding, blow molding, extrusion and heat pressing. Easy handling, low cost combined with good physical and chemical properties make them a popular plastic, a good choice for a multitude of applications in the plastics industry.

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kspacesite · 2 years ago

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Innovative smart fabric responds to changes in temperature

Aalto University and University of Cambridge researchers used LCEs (liquid crystalline elastomers) to weave fabric that changes shape when heated – a huge step toward smart textiles. – just-style.com’s Claire Jenns

#engineering

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mygeekscorenews · 3 years ago

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Have a look to the latest and sensational hi tech news

Wearable technology was on display at the Wearable Technology Fair in London. My Zone voted the best because it is a compression shirt for men. It has a built-in cardiac electrode connected to the clamping module. Optical blood flow projects a beam of light through the wrist and predicts the heart rate. UCLA researchers have developed an artificial fiber that behaves like human muscles. The fibers are similar to those created by human muscle fibers, but suffer from some slow reaction times. It uses a polymer made from a copper solution and Liquid Crystalline Elastomer (LCE) technologies. Robots are mainly trained to recognize the stiffness of an object, or even an object of a certain shape. High tech news is paving the way for new talent who are very interested in developing and developing skills based on modern technology.

#technology #development #news #media #tech updates #human

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hollybrookesbcu · 4 years ago

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sramfact · 2 years ago

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The report "Southeast Asia Waterproofing Systems Market by Preformed Membranes (Modified Bitumen, PVC, TPO, and EPDM), Liquid Applied Membranes (Elastomeric, Cementitious, Bituminous), Integral Systems (Pore Blocking Admixtures, Crystalline Waterproofing Admixtures), Waterproofing Chemicals (Bitumen, Elastomers, PVC, TPO, EPDM, and Concrete) - Forecasts to 2021", The market size of Southeast Asia waterproofing systems is estimated to grow from 3.03 Billion in 2016 to 5.35 Billion by 2021, at a CAGR of 14.52%. The market is driven by the rising building & construction industry, improved quality of construction, and cost-effectiveness of waterproofing chemicals.

Bitumen is the most common type of waterproofing chemical used. It is extensively used in preformed membranes and coatings & LAMs as bitumen waterproofing membrane. Bituminous membranes and coatings offer exceptional waterproofing properties, and have high toughness, high resistance to water leakages, and excellent resistance to UV light. Increased government investments in commercial building & construction projects are driving the demand for waterproofing system/technology, which in turn drives the demand for bitumen, globally.

TPO membranes ensure high flexibility; cost-effectiveness; energy efficiency; durability; high resistance to UV light, ozone, and chemical exposure; low labor requirement; high strength; and environmental sustainability. These factors make it more preferable than other single ply roofing membranes. Therefore, it is the fastest-growing segment among other membranes in Southeast Asia. These membranes are gaining acceptance owing to their excellent performance and installation advantages.

Southeast Asia, including Indonesia, Thailand, Malaysia, Singapore, the Philippines, and Vietnam, has always been a strong market for waterproofing. It leads the waterproofing market with respect to demand as well as consumption. In Southeast Asia, the growth of construction activities, especially in Vietnam, is an important indicator for the waterproofing demand.

Carlisle Companies Inc. (U.S.), Soprema Group (France), The Dow Chemical Company (U.S.), W.R. Grace & Co (U.S.), BASF SE (Germany), Johns Manville (U.S.), Pidilite Industries (India), Fosroc International Ltd. (U.K.), Mapei S.p.A (Italy), Firestone Building Products (U.S.), SIKA AG (Switzerland),), GSE Environmental (U.S.), and GAF Material Corporation (U.S.) are the key players of the Southeast Asia waterproofing market.

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materialsscienceandengineering · 1 month ago

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