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P-Methoxybenzoic Acid CAS 100-09-4

Molecular Formula: C8H8O3

Formula Weight: 152.15

ZSpharmac: P-Methoxybenzoic Acid Raw Material Supplier

Product Name: P-Methoxybenzoic Acid
CAS No: 100-09-4
Purity: 99%

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Basic Info

Product Name:P-Methoxybenzoic Acid
Other Names:4-Methoxybenzoic Acid
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:White to Slightly Gray-Beige Powder
EINECS No.:202-818-5
Storage:Store Below +30°C
Provide:P-Methoxybenzoic Acid MSDS;
P-Methoxybenzoic Acid COA

What is P-Methoxybenzoic Acid?

P-Methoxybenzoic Acid is an organic compound with the chemical formula C8H8O3 and CAS registration number 555-30-4. It is a white crystalline powder with an odor similar to phenol, soluble in hot water, alcohol, ether and chloroform and other organic solvents, and slightly soluble in cold water.

P-Methoxybenzoic Acid Property

Melting point 

182-185 °C(lit.)

Boiling point 

275 °C



vapor pressure 

0.001Pa at 25℃

refractive index 



185 °C

storage temp. 

Store below +30°C.


H2O: soluble2500 parts


4.50(at 25℃)




White to slightly gray-beige


3-4 (0.3g/l, H2O, 20℃)


at 10.00 % in dipropylene glycol. faint putrid sweet cadaverous

Odor Type


Water Solubility 

Soluble in water at 20°C 0.3g/L. Soluble in alcohol, ethyl acetate and ether.


P-Methoxybenzoic Acid Uses

Pharmaceutical industry:
P-Methoxybenzoic Acid can be used as a pharmaceutical intermediate to participate in the synthesis of a variety of drugs. For example, in the manufacturing process of antibiotics, analgesics, sedatives and other pharmaceutical products, it is a key component in the construction of complex drug molecules.

Preservatives and antibacterial agents:
Esters (such as methyl paraben, ethyl paraben, etc.) formed after the esterification reaction of p-methoxybenzoic acid are common preservatives and are widely used in food, beverages, cosmetics and personal care in the product to prevent the growth of microorganisms and extend the shelf life of the product.

Flavors and fragrances:
This compound and its derivatives are also used in the flavor and fragrance industry, and may be used as raw materials in the preparation of fragrances to provide specific aroma components.

Dyes and Pigments:
In the dye and pigment manufacturing industry, p-methoxybenzoic acid can be used as a starting material for the synthesis of specific dyes and pigments, and can be chemically converted to produce organic dye compounds with specific colors and stability.

Fine chemicals:
In the field of fine chemicals, p-methoxybenzoic acid can be used to synthesize various specialty chemicals, such as photoinitiators, resin modifiers, plastic additives, etc.

Organic Synthesis:
As an important basic organic chemical raw material, p-methoxybenzoic acid is often used as a bridge compound in organic synthesis routes to construct other complex organic molecular structures, especially in the research and development of pharmaceuticals and agricultural chemicals.

Future Development Trends of P-Methoxybenzoic Acid

Green and sustainable production:
With the global emphasis on environmental protection and sustainable development, the production process of P-Methoxybenzoic Acid may develop in a greener and more environmentally friendly direction in the future, including using more energy-saving synthesis methods, reducing by-product emissions, and using renewable Resources as raw materials.

Downstream application innovation:
In the field of medicine, with the development of new drugs and the advancement of biotechnology, p-methoxybenzoic acid may find more new applications, such as serving as a synthetic intermediate for new drugs or drug precursors, and participating in more therapeutic areas.

Preservative alternatives:
In the food and cosmetics industry, although paramethoxybenzoates have been widely used as preservatives, consumers’ higher pursuit of product safety and natural ingredients may prompt researchers to explore safer, non-toxic products. Hazardous and biodegradable alternatives. Even so, modified paraben derivatives or combination preservatives may continue to play a role in the future.

Impact of regulations and policies:
Changes in regulations and policies will also affect the development trend of P-Methoxybenzoic Acid. If relevant regulations restrict the use of certain chemicals, this may accelerate the research process to find alternatives, which in turn may encourage their continued use within the compliance framework.

Technology research and development progress:
With the advancement of science and technology, new synthetic pathways and technologies for p-methoxybenzoic acid may emerge to increase yields, reduce costs, and reduce environmental pollution. In addition, it is possible to develop new high-performance materials based on this raw material or have applications in other high-tech fields.


National Center for Biotechnology Information. PubChem Compound Summary for CID 7478, p-Anisic acid. https://pubchem.ncbi.nlm.nih.gov/compound/p-Anisic-acid. Accessed Apr. 8, 2024.

As a company specializing in the production and supply of P-Methoxybenzoic Acid raw materials, we are committed to providing customers with high-quality products and preferential prices. We have rich experience and technology to ensure product quality and stable supply. No matter where you are, we can provide you with the P-Methoxybenzoic Acid raw materials you need to support your production and research and development.

We always adhere to the principle of honest operation, strictly control product quality, and serve every customer with a customer-first attitude. Over the years, we have established good cooperative relationships with customers at home and abroad and won their trust and praise.

If you have needs or are interested in our products, please contact our service staff directly, we will wholeheartedly provide you with the best quality services and products. Looking forward to cooperating with you and developing together!

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.

Get P-Methoxybenzoic Acid Quotation