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Phthalic anhydride Manufacturer and Supplier

CAS No.:7664-38-2 |EC Number.:231-633-2| Molecular formula.: H3PO4

Phthalic anhydride

Phthalic anhydride Manufacturers, Phthalic anhydride Suppliers, Phthalic anhydride Price, Phthalic anhydride Formula, Phthalic anhydride Exporter in Mumbai, India.

Vinipul Chemicals Pvt. Ltd., a renowned manufacturer, supplier, and exporter based in India, specializes in producing high-purity Phthalic anhydride (CAS No. 85-44-9). As a leading Phthalic anhydride manufacturer, our company is widely recognized for its commitment to delivering top-quality specialty chemicals with exceptional accuracy in composition and an absence of impurities.

To ensure the highest standards of purity, we utilize superior-quality chemicals and employ state-of-the-art manufacturing equipment, adhering to international industry guidelines. As a reliable Phthalic anhydride supplier, we take pride in offering products  that exhibit superior quality, precisely meeting the required composition specifications, and boasting an extended shelf life.

By choosing Vinipul Chemicals Pvt. Ltd., you can trust that you are obtaining Phthalic anhydride of the finest grade, manufactured with meticulous attention to detail and quality control. As a prominent Phthalic anhydride manufacturer in India, We prioritize the satisfaction of our customers by consistently delivering products that meet their stringent requirements.

Phthalic anhydride Specification

Chemical name

Phthalic anhydride



EC Number


Commercial name / Synonyms

PHTHALIC ANHYDRIDE, Isobenzofuran-1,3-dione, 1,3-Isobenzofurandione, 2-Benzofuran-1,3-dione, 1,3-Dioxophthalan, 1,3-Phthalandione, Phthalsaeureanhydrid, o-Phthalic acid anhydride, Phthalic acid anhydride

Molecular formula



Molecular weight

148.11 g/mol

Melting Point

267.4 °F (NTP, 1992)



Physical Form 

White, lustrous needles

Physical Appearance 

Dry Powder; Other Solid; Liquid; Pellets or Large Crystals

Packaging Details 

25 kg / 50 kg / HDPE packaging bags / Drum/ As per Client’s requirements

What is Phthalic anhydride?

Phthalic anhydride is a chemical compound with the molecular formula C6H4(CO)2O. It is derived from phthalic acid and is commonly used in various industries. This white solid substance has significant industrial applications, particularly in the production of plasticizers for plastics on a large scale. It is considered the primary commercial form of phthalic acid. Phthalic anhydride holds the distinction of being the first anhydride of a dicarboxylic acid to be widely employed in commercial processes. It plays a crucial role in the manufacturing of plasticizers, which are additives used to enhance the flexibility, durability, and other properties of plastics.

Phthalic anhydride Price

If you are looking to purchase Phthalic anhydride, it’s important to know the current market price. Phthalic anhydride price can vary depending on the various factors. Vinipul Chemicals offers the best price in the market listed below: –

Product Range


Phthalic anhydride

Rs 126/kg

Prices shown above are provisional prices and may change due to different market conditions for latest prices

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Properties of Phthalic anhydride

Phthalic anhydride possesses several notable properties, including:

Physical state

Phthalic anhydride appears as a white crystalline solid at room temperature.


It has a distinct, pungent, and irritating odor

Melting Point

Phthalic anhydride has a melting point of approximately 131°C (268°F).

Boiling Point

It has a boiling point of around 284°C (543°F).


Phthalic anhydride is sparingly soluble in water but dissolves readily in organic solvents such as benzene, toluene, and acetone.


It is highly reactive and undergoes various chemical reactions. It readily reacts with water to form phthalic acid and is also prone to undergoing condensation reactions.


The compound is toxic and can cause irritation to the eyes, skin, and respiratory system. Prolonged exposure or ingestion can lead to more severe health effects.


Phthalic anhydride is combustible and can ignite when exposed to a flame or heat source.

Phthalic anhydride Applications

Phthalic anhydride finds widespread applications in different industries due to its versatile properties. Some of its key applications include:

  1. Plasticizers: One of the primary uses of phthalic anhydride is in the production of plasticizers. It is a crucial raw material for the synthesis of phthalate esters such as diethyl phthalate (DEP) and dioctyl phthalate (DOP). These plasticizers are added to plastics to enhance their flexibility, durability, and resistance to wear and tear.
  2. Polyester Resins: It is employed in the manufacturing of polyester resins. These resins are widely used in various applications, including coatings, adhesives, and fiberglass reinforced plastics (FRP). Phthalic anhydride reacts with glycols to form polyester resins that exhibit excellent mechanical and chemical resistance properties.
  3. Alkyd Resins: Alkyd resins, widely used in the production of paints, varnishes, and coatings, are another application of phthalic anhydride. It undergoes a reaction with polyols and fatty acids to produce alkyd resins with desirable characteristics such as good adhesion, high gloss, and durability.
  4. Dyes and Pigments: It is utilized in the synthesis of various dyes and pigments. It acts as a building block in the production of phthalo blue and phthalo green pigments, which are extensively used in the coloring of plastics, inks, coatings, and textiles.
  5. Flame Retardants: Phthalic anhydride is also employed in the production of flame retardant additives. These additives are incorporated into plastics, textiles, and other materials to reduce their flammability and improve fire resistance.
  6. Pharmaceuticals: It serves as a precursor in the synthesis of certain pharmaceutical compounds, including phthalimide derivatives and phthalate-based drugs.
  7. Agricultural Chemicals: Phthalic anhydride is utilized in the production of herbicides and insecticides, playing a role in the synthesis of active ingredients for agricultural applications.

These applications demonstrate the wide-ranging utility of phthalic anhydride in various industries, making it an important chemical compound in the manufacturing of plastics, resins, coatings, and other materials.

About Vinipul Chemicals

Vinipul Chemicals Pvt. Ltd is a renowned Indian company that stands out as a prominent manufacturer, supplier, and exporter in the chemical industry. With a focus on delivering exceptional quality, the company specializes in the production of high-purity Phthalic anhydride. Leveraging our expertise and state-of-the-art facilities, Vinipul Chemicals Pvt. Ltd ensures the manufacturing of Phthalic anhydride that meets rigorous standards. With a commitment to customer satisfaction, we strive to provide reliable and consistent products to our global clientele.

Industries We Serve

Market Area

We supply and exports Phthalic anhydride in all parts of the world such as

Phthalic anhydride in Africa Countries

South Africa , Nigeria, Kenya, Ghana, Ethiopia, Tanzania, Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic (CAR), Chad, Comoros, Democratic Republic of the Congo, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eritrea, Gabon, Gambia, Guinea, Guinea-Bissau, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Nigeria, Rwanda, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Sudan, Sudan, Swaziland, Togo, Tunisia, Uganda, Zambia, Zimbabwe.

Phthalic anhydride in Gulf Countries

Oman, Qatar, Kuwait, Saudi Arabia, Dubai, Bahrain, Iran, United Arab Emirates

Phthalic anhydride in Asia Countries

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, China, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Oman, Pakistan, Palestine, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen

We supply Phthalic anhydride in all parts of India.

Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu & Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttarakhand, Uttar Pradesh and West Bengal.

Note: – Please be advised that the information contained in this document is intended for illustrative purposes only. Due to variations in product grade, applications, industries, or uses, the accuracy of the information provided cannot be guaranteed. © Copyright 2023 © Vinipul Chemicals All Rights Reserved (Terms of Use). Reproduction of any material from this site is strictly prohibited without permission. Vinipul Chemicals products are exclusively sold through the company’s website. For precise product specifications and requirements, as well as advice on which products are best suited for your specific application needs, please contact us at [email protected] Use Terms | Privacy.

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