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4-Isopropyltoluene CAS 99-87-6

Molecular Formula: C10H14

Formula Weight: 134.22

ZSpharmac: 4-Isopropyltoluene Raw Material Supplier

Product Name: 4-Isopropyltoluene
CAS No: 99-87-6
Purity: 99%

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Basic Info

Product Name:4-Isopropyltoluene
Other Names:P-Cymene
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance: Colorless Liquid
EINECS No.:202-796-7
Provide:4-Isopropyltoluene MSDS;
4-Isopropyltoluene COA

What is 4-Isopropyltoluene?

Para-cymene is derived from d-limonene through a transformation process, resulting in a more stable chemical structure. Due to its benzene ring, para-cymene exhibits enhanced antibacterial and anti-inflammatory properties. It is known for its ability to alleviate bone pain, improve blood circulation, relieve rheumatism, warm joints, and maintain joint health. The molecular structure of para-cymene resembles a larger and more protective sun umbrella compared to terpinene. This compound possesses excellent bactericidal, antiviral, and immune-stimulating effects, similar to a health-protecting sun umbrella among monoterpenes. However, cymene is more irritating than limonene and may cause skin redness and heat upon direct application. It is advisable to dilute essential oils containing high levels of cymene to prevent skin irritation. When storing essential oils containing para-cymene, it is important to protect them from air exposure to prevent oxidation, which can lead to the formation of more skin-irritating phenols.

4-Isopropyltoluene Property

Melting point 

-68 °C

Boiling point 

176-178 °C(lit.)


0.86 g/mL at 25 °C(lit.)

vapor density 

4.62 (vs air)

vapor pressure 

1.5 mm Hg ( 20 °C)

refractive index 

n20/D 1.490(lit.)


117 °F

storage temp. 



Chloroform (Sparingly), Ethyl Acetate (Slightly)






Mild, pleasant; aromatic, solvent-type.

Odor Type


Odor Threshold


explosive limit


Water Solubility 



4-Isopropyltoluene Uses

4-Isopropyltoluene is a versatile compound that finds application in various industries. It is commonly employed in the production of p-cresol and acetone. Additionally, it serves as an intermediate in the synthesis of dyes, medicines, and spices.

Moreover, isopropyl-p-toluene can be found in several essential oils and possesses expectorant properties. It is also utilized as a cough suppressant, aiding in the relief of cough symptoms.

In the realm of organic synthesis, 4-Isopropyltoluene plays a significant role and is instrumental in the formulation of paint thinners. Its versatility as an intermediate enables its use in the creation of dyes, medicines, and spices. By utilizing this compound, various industries can enhance their production processes and develop a wide range of high-quality products.

4-Isopropyltoluene Contents of the Invention

The present invention aims to address the limitations of existing technology, such as small reaction scale, inability to achieve industrial continuous production, and complex treatment process. To overcome these shortcomings, the present invention provides a method and device for the continuous production of 4-Isopropyltoluene. This method offers continuous production, simple operation, and eliminates the need for waste, solvents, and other reaction reagents. Additionally, the catalyst used in this method is simple and recyclable.

The method for continuous production of paracymene involves loading 0.1kg to 50.0kg of Pd/C catalyst into the reactor and introducing it at a speed of 0.01L/min to 5.00L/min using an inert carrier gas like nitrogen. The heating device is turned on and the reactor temperature is raised to a range of 150°C to 400°C. Subsequently, the metering pump is activated and industrial dipentene is continuously fed into the reactor at a rate equivalent to a space speed of 0.5h-1 to 5.0h-1. The raw materials are preheated, gasified, and then come into contact with the catalyst. As the reaction progresses, the reaction products continuously enter the condenser connected to the bottom of the reactor. After condensation, the products are directly collected in a storage tank. The obtained product is paracymene. The Pd/C catalyst used in this method has a palladium content ranging from 0.1%wt to 10.0%wt.

The device used to implement the continuous production of 4-Isopropyltoluene consists of a raw material storage tank, a metering pump, a preheater, a gasifier, a reactor, a condenser, a product storage tank, and a heating device. A metering pump capable of continuous constant flow feeding is placed between the preheater and the raw material storage tank. The inlet of the metering pump is connected to the outlet of the raw material storage tank, and the outlet of the metering pump is connected to the inlet of the preheater. The outlet of the preheater is then connected to the inlet of the gasifier. The outlet of the gasifier is connected to the inlet at the top of the reactor. The outlet at the bottom of the reactor is connected to the inlet of the condenser, and the outlet of the condenser is connected to the inlet of the product storage tank. The preheater, gasifier, reactor, and heating device are all interconnected. The vaporizer contains a nozzle with an inner diameter ranging from 0.05mm to 1.00mm. The reactor is a tubular reactor with tubes loaded with reaction catalysts. It is equipped with a temperature sensor and a jacket for temperature control. The reactor is a tubular multi-tube reaction bed, and the reactor jacket can regulate the temperature. The feed port of the reactor is located at the top, and the raw materials are preheated, atomized, and gasified by the nozzle before entering the reaction bed from the top. The reaction product exits the reactor from the bottom and is collected directly into the product storage tank after condensation. The heating device comprises an expander, a magnetic pump, a cold oil tank, and a hot oil furnace. A magnetic pump is placed between the cold oil tank and the hot oil furnace, which is connected to the preheater, gasifier, and reactor. One end of the hot oil furnace is connected to the expansion tank, while the other end is connected to the preheater, gasifier, and reactor, forming a closed heating loop with the magnetic pump.

The raw material used in this invention, industrial dipentene, is a monocyclic terpene with a six-membered ring structure. It can be converted into 4-Isopropyltoluene through catalytic dehydrogenation. Industrial dipentene is a mixture of monocyclic monoterpenoids with similar molecular weight and structure, and it usually contains various isomers such as limonene, α-terpinene, α-phellandrene, β-phellandrene, γ-terpinene, and terpinene.

4-Isopropyltoluene Specific Implementation Mode

The present invention utilizes the same gas chromatography analysis method to analyze the reaction raw materials, reaction mixtures, and reaction products. The gas chromatograph used is Shimadzu GC-2014, with a Rtx-5 chromatographic column (0.25mm×30m×0.25μm). The column temperature control conditions are as follows: maintaining 70°C for 2 minutes, increasing to 130°C at a rate of 3°C/min, and then raising to 280°C at a rate of 10°C/min. Nitrogen is used as the carrier gas with a split ratio of 50:1. The detector is FID, with a detector temperature and injector temperature of 280°C.

The method described is for the continuous production of paracymene from industrial dipentene. It involves using industrial dipentene as the raw material, Pd/C as the catalyst, and conducting a catalytic dehydrogenation reaction in a continuous reaction device to continuously produce paracymene. The process is illustrated in Figure 1 and consists of the following steps:

Step 1: Adding 0.1kg to 50.0kg of catalyst into the reactor and introducing inert carrier gas nitrogen at a flow rate of 0.01L/min to 5.00L/min. The heating device is turned on and the reactor temperature is raised to a range of 150℃ to 400℃. The metering pump is then turned on to continuously feed the industrial dipentene raw material at a rate equivalent to a space velocity of 0.5h-1 to 5.0h-1. The raw material is preheated, vaporized, and brought into contact with the catalyst for the reaction. The Pd/C catalyst used contains palladium content ranging from 0.1% to 10.0%. The reactor temperature can be controlled within the range of 150℃ to 400℃, and the feeding rate of the industrial dipentene raw material can be adjusted to achieve air speeds of 0.5h-1, 1.0h-1, 2.0h-1, 3.0h-1, 4.0h-1, or 5.0h-1. The flow rate of nitrogen can be set at 0.01L/min, 0.10L/min, 1.00L/min, 1.50L/min, 2.00L/min, 3.00L/min, 4.00L/min, or 5.00L/min.

Step 2: Once the reactor temperature reaches the specified temperature, the metering pump is opened and the industrial dipentene raw material is continuously fed at a rate equivalent to an air speed of 0.5h-1 to 5.0h-1. The raw material is preheated by the preheater and then gasified by the nozzle of the carburetor, entering the reactor to react with the catalyst. The reaction product is continuously condensed in the condenser and collected in the product storage tank. In this example, the reaction products were sampled and analyzed using gas chromatography under different temperatures, dipentene feed rates, and nitrogen flow rates.

About Products:
If you need 4-Isopropyltoluene as a cosmetic raw material, please contact our service staff directly and we will provide you with high-quality products at the best price.
As an experienced 4-Isopropyltoluene manufacturer and supplier, our company, ZSpharmac will provide 4-Isopropyltoluene raw materials to customers around the world for a long time.
Over the years, the company has adhered to the spirit of “integrity management, strict quality control, and customer first” and has won unanimous praise from customers at home and abroad.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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