
Phthalic acid, with the CAS number 88 - 99 - 3, is an important organic compound. Its chemical formula is C₈H₆O₄, and its molecular weight is approximately 166.13 g/mol. It appears as a white crystalline powder. Phthalic acid is sparingly soluble in cold water but more soluble in hot water, alcohol, and ether. It has a melting point around 210 - 211 °C, and it decomposes upon further heating. The density of phthalic acid is about 1.593 g/cm³. In the market, it is often supplied in different grades according to purity, and our factory offers high - quality phthalic acid at a competitive price.
Phthalic acid has a wide range of applications in various industries. In the plastics industry, it is a key raw material for the production of phthalate esters, which are commonly used as plasticizers. Plasticizers can improve the flexibility, durability, and processability of plastics, making them suitable for a variety of products such as PVC pipes, cables, and plastic films. In the dye industry, phthalic acid is used in the synthesis of certain dyes, helping to enhance the color fastness and brightness of the dyes. It is also used in the production of pigments, which are widely used in paints, inks, and coatings. In the pharmaceutical industry, phthalic acid derivatives can be used in the synthesis of some drugs, playing important roles in drug development and formulation.
When using phthalic acid, appropriate safety measures should be taken. Workers should wear protective clothing, gloves, and goggles to avoid direct contact with the skin and eyes. It should be stored in a cool, dry, and well - ventilated place, away from sources of heat and open flames. When using it in chemical reactions, it is necessary to follow the correct reaction procedures and conditions. For example, in the synthesis of phthalate esters, specific catalysts and reaction temperatures are required. The reaction usually takes place in an organic solvent environment, and the reaction time should also be strictly controlled to ensure high - quality product output. In addition, after use, any remaining phthalic acid should be properly disposed of in accordance with relevant environmental protection regulations.
Case 1: Plastic Pipe Manufacturing
A plastic pipe manufacturing company used our phthalic acid to produce PVC pipes. By using high - quality phthalic acid to synthesize phthalate esters as plasticizers, the pipes obtained excellent flexibility and impact resistance. These pipes can withstand the pressure changes in water supply and drainage systems, reducing the probability of breakage and leakage. The company reported an increase in product quality and a decrease in production costs due to the competitive price of our phthalic acid.
Case 2: Dye Production
A dye factory used phthalic acid in the synthesis of a new type of reactive dye. The phthalic acid - based dye showed better color fastness on cotton fabrics compared to traditional dyes. The dyeing process was more stable, and the colors were more vivid. This new dye helped the factory to expand its market share in the textile industry, as customers were satisfied with the high - quality dyed fabrics.
If you have any questions or need more information about our Factory Supply Phthalic Acid Cas 88 - 99 - 3 With Good Price, please feel free to contact us. Our email is info@vivalr.com, and our phone number is (86) 15866781826. We look forward to serving you.

This is William, CEO of Zhishang Chemical Co., Ltd.
Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.











