Phthalic Anhydride
ELRASATM – PTAn
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Phthalic Anhydride is a versatile chemical intermediate primarily used in the production of plasticizers, unsaturated polyester resins, and alkyd resins. It is a white, crystalline compound with a…
CAS Number
85-44-9
HS Code
29.17.35.00
INCI Name
Phthalic Anhydride
Molecular Formula
C8H4O3
Phthalic Anhydride
ELRASATM – PTAn
Phthalic Anhydride is a versatile chemical intermediate primarily used in the production of plasticizers, unsaturated polyester resins, and alkyd resins. It is a white, crystalline compound with a pungent odor, known for its role in enhancing the flexibility and durability of…
CAS Number
85-44-9
INCI Name
Phthalic Anhydride
HS Code
29.17.35.00
Molecular Formula
C8H4O3
Get Pricing for This Product
Need pricing? Request a quote for this product and we'll get back to you shortly.
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Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Appearance | White, lustrous needles or flakes. |
| Odor | Mild, characteristic, acrid, choking odor. |
| Molecular Weight | 148.11 g/mol |
| Density | 1.53 g/cm³ |
| Specific Gravity | 1.53 |
| Viscosity (Molten) | 1.19 mPa·s at 132 °C |
| Refractive Index | 1.646 |
| Ph (Aqueous Solution) | Forms a corrosive solution; hydrolyzes to Phthalic acid. |
| Assay / Purity | ≥99% |
Chemical Properties
| Property | Specification |
|---|---|
| Pka | No reliable source found. |
| Ionic Nature | Non-ionic; behaves as a Lewis acid. |
| Incompatibilities | Strong oxidizers, strong acids, strong bases, alcohols, amines, water, copper oxide, and sodium nitrite. |
| Hazardous Reactions / Decomposition Products | Reacts exothermically with water to form Phthalic Acid. Reaction can be violent when heated with copper oxide or sodium nitrite. When heated to decomposition, may emit toxic fumes including carbon monoxide and carbon dioxide. |
Thermal Properties
| Property | Specification |
|---|---|
| Melting Point | 131 °C |
| Boiling Point | 284 °C (sublimes) |
| Flash Point | 152 °C (closed cup) |
| Autoignition Temperature | 570 °C |
| Decomposition Temperature | No decomposition reported below boiling point. |
| Thermal Stability | Stable under normal conditions of storage and handling. Heat contributes to instability. |
Dosing Guidelines
A. Dosing by Application
| Application | Recommended / Max Dosage |
|---|---|
| Alkyd Resins | Typically used as a primary dibasic acid component, with the amount determined by the desired oil length and performance characteristics of the resin. |
| Unsaturated Polyester Resins | A key component reacted with glycols and unsaturated dibasic acids/anhydrides. The ratio determines the resin's properties, such as rigidity and chemical resistance. |
| Phthalate Plasticizers | Used as the primary reactant with various alcohols (e.g., 2-ethylhexanol, butanol) to produce esters like DEHP and DBP. The dosage is based on a 1:2 molar ratio of anhydride to alcohol. |
About Phthalic Anhydride
Phthalic Anhydride manufacturers and suppliers play a crucial role in the chemical industry, providing a key intermediate for the production of plasticizers, resins, and coatings. This compound is essential for enhancing the performance of various materials, making it a staple in industries such as automotive, construction, and consumer goods. Phthalic Anhydride suppliers focus on delivering high-purity products to meet the stringent quality standards required by these industries. The production process is carefully controlled to ensure consistency and reliability, which are vital for the compound's effectiveness in its applications. As the demand for sustainable and high-performance materials grows, Phthalic Anhydride manufacturers are increasingly adopting eco-friendly practices to minimize their environmental impact. These efforts include optimizing energy use and reducing emissions during production. The trend towards sustainable manufacturing aligns with the global push for greener chemical processes and products. In addition to its role in plasticizers and resins, Phthalic Anhydride is also used in the production of dyes, pigments, and pharmaceuticals, further highlighting its versatility. Its widespread use across multiple sectors underscores the importance of Phthalic Anhydride as a fundamental compound in modern industry.
- Versatile Chemical Intermediate: Essential for producing plasticizers, resins, and coatings.
- Function: Chemical intermediate, monomer, plasticizer precursor, resin former.
- High Purity Standards: Ensures performance in critical applications like automotive and construction.
- Features: High reactivity, bifunctional nature, enhances flexibility and durability in polymers.
- Eco-Friendly Production: Focus on minimizing environmental impact through sustainable practices.
- Benefits: Improves adhesion, weather resistance, and toughness in coatings; provides flexibility to PVC products; enables the creation of strong, durable fiberglass-reinforced plastics.
- Enhances Material Performance: Improves flexibility, durability, and resistance in end products.
- Wide Industrial Use: Key component in dyes, pigments, and pharmaceuticals.
About Phthalic Anhydride
Phthalic Anhydride manufacturers and suppliers play a crucial role in the chemical industry, providing a key intermediate for the production of plasticizers, resins, and coatings. This compound is essential for enhancing the performance of various materials, making it a staple in industries such as automotive, construction, and consumer goods. Phthalic Anhydride suppliers focus on delivering high-purity products to meet the stringent quality standards required by these industries. The production process is carefully controlled to ensure consistency and reliability, which are vital for the compound's effectiveness in its applications. As the demand for sustainable and high-performance materials grows, Phthalic Anhydride manufacturers are increasingly adopting eco-friendly practices to minimize their environmental impact. These efforts include optimizing energy use and reducing emissions during production. The trend towards sustainable manufacturing aligns with the global push for greener chemical processes and products. In addition to its role in plasticizers and resins, Phthalic Anhydride is also used in the production of dyes, pigments, and pharmaceuticals, further highlighting its versatility. Its widespread use across multiple sectors underscores the importance of Phthalic Anhydride as a fundamental compound in modern industry.
- Versatile Chemical Intermediate: Essential for producing plasticizers, resins, and coatings.
- Function: Chemical intermediate, monomer, plasticizer precursor, resin former.
- High Purity Standards: Ensures performance in critical applications like automotive and construction.
- Features: High reactivity, bifunctional nature, enhances flexibility and durability in polymers.
- Eco-Friendly Production: Focus on minimizing environmental impact through sustainable practices.
- Benefits: Improves adhesion, weather resistance, and toughness in coatings; provides flexibility to PVC products; enables the creation of strong, durable fiberglass-reinforced plastics.
- Enhances Material Performance: Improves flexibility, durability, and resistance in end products.
- Wide Industrial Use: Key component in dyes, pigments, and pharmaceuticals.
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| Republic of Korea | - | Subject to registration under K-REACH. | - |
| ASEAN | - | Not specifically restricted in the ASEAN Cosmetic Directive, as its primary uses are industrial, not cosmetic. | - |
| China | - | Listed on the Inventory of Existing Chemical Substances in China (IECSC). | - |
| United States | - | Regulated by the EPA under the Toxic Substances Control Act (TSCA) and by OSHA for workplace safety. EPA is conducting a risk evaluation, which preliminarily found unreasonable risks to workers and consumers for certain uses. It is listed on the TSCA Inventory. | TSCA compliance. |
| European Union | - | Registered under REACH. Harmonised classification and labelling (CLP) apply: Acute Tox. 4, Skin Irrit. 2, Eye Dam. 1, Resp. Sens. 1, Skin Sens. 1, STOT SE 3. | REACH Registration. |
| Canada | - | Not specifically restricted. Listed on the Domestic Substances List (DSL). | - |
| India | - | The Phthalic Anhydride (Quality Control) Order, 2020 mandates that the product must conform to Indian Standard IS 5158:1987 and bear the BIS Standard Mark (ISI Mark) for manufacturing, sale, or import. This does not apply to products intended for export. | BIS (ISI Mark) Certification per IS 5158:1987. |
| Japan | - | Listed on the Chemical Substance Control Law (CSCL) inventory. | - |
| Australia | - | Listed on the Australian Inventory of Industrial Chemicals (AIIC). | - |
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