Phthalic Anhydride For Plasticizer
CAS Number:85-44-9
Molecular formula:C8H4O3
Molecular weight:148.12
Physical state:White needle-like crystals
PACKING:25KG/BAG
Xiamen Ditai Chemicals Co., Ltd. is one of the most reliable manufacturers and suppliers of phthalic anhydride for plasticizer in China. Welcome to buy high quality chemical products at competitive price from our factory.
Products Description
Phthalic anhydride (PA) is not a plasticizer on its own, but it is an essential raw material in the production of phthalate ester plasticizers. Through esterification reactions, PA is converted into compounds such as dioctyl phthalate (DOP) and diisononyl phthalate (DINP). These phthalate esters are the functional additives used to improve the flexibility, processability, and durability of rigid polymer materials, particularly PVC.
Products Description
| Item | Specification |
|---|---|
|
Molten Chroma≤ |
100 |
|
thermostable Chroma≤ |
- |
|
Chroma of vitriol≤ |
150 |
|
crystallization point°C≥ |
130 |
|
Purity%≥ |
99 |
|
Free acid≤ % |
0.5 |
Common Phthalate Ester Plasticizers
Phthalic anhydride for plasticizer production is used to manufacture a range of phthalate esters designed for different performance needs. Dioctyl phthalate (DOP), also known as DEHP, is a widely used general-purpose plasticizer and represents the largest production volume due to its balanced flexibility and processing characteristics. Higher molecular-weight plasticizers such as DINP and DIDP are preferred where improved permanence, lower volatility, and long-term durability are required. Specialty grades including DBP and BBP are commonly applied in adhesives, flooring materials, and sealants, where specific flexibility, adhesion, and performance control are important.
Health & regulatory note
As certain low-molecular-weight phthalates such as DEHP have been classified as reproductive toxicants, many manufacturers have shifted toward higher-molecular-weight phthalates or non-phthalate plasticizer alternatives. Despite these changes, phthalic anhydride continues to be the primary and most widely used starting material in the production of plasticizers.
FAQ for ZnCl2 Catalyst
Q: What are the main impurities in the product?
A: The product maintains low levels of impurities, including iron (Fe ≤0.0005%), sulfate (SO₄²⁻ ≤0.001%), and acid-insoluble matter ≤0.02%, ensuring consistent performance in sensitive industrial processes.
Q: What is the moisture content of the ZnCl2 Catalyst?
A: The moisture content is controlled at ≤0.3%, which helps maintain stability and ensures reliable dissolution in chemical or metallurgical applications.
Q: What forms of packaging are available?
A: The ZnCl2 Catalyst is supplied in 25 kg bags, suitable for bulk orders and optimized for international shipping and handling.
Q: Is this product classified as a hazardous material for transport?
A: Yes, it is classified as UN 2331, Class 8, and can be safely shipped internationally following hazardous material regulations.
Q: Is this product suitable as a catalyst for organic chemical synthesis?
A: Absolutely. Its high purity and low iron content make it ideal as a Lewis acid catalyst for various organic synthesis reactions.
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