Dyes Additive Phthalic Anhydride
CAS No.85-44-9
Purity：≥99.5%
Molecular Formula：C8H4O3
Phthalic anhydride, referred to as PA, a white scaly or crystalline powder. Phthalic anhydride is an important raw material in chemical industry, especially used in the manufacture of plasticizers, like Dibutyl phthalate and dioctyl phthalate.
Parameter
Technical standard GB/T 15336-2013
Index name | Index | ||
Superior products | First-grade products | Qualified products | |
Appearance | White flake or crystalline powder | Scaly or crystalline powder with other colors | |
Molten chroma ≤ | 20 | 50 | 100 |
Thermal stability chroma ≤ | 50 | 150 | — |
Sulphuric acid chroma≤ | 40 | 100 | 150 |
Crystallization point, ℃ ≥ | 130.5 | 130.3 | 130.0 |
Purity,% ≥ | 99.5 | 99.5 | 99.5 |
Mass fraction of free acid,% ≤ | 0.20 | 0.30 | 0.50 |
Product Performance and Application
Phthalic anhydride, short as PA, a white scaly or crystalline powder. Its Molecular formula is C8H403, molecular weight is 148.12, melting point is 131.1l ℃, boiling point is 284.5 ℃, flash point is 151 ℃ (closed) and 165 ℃ (open), spontaneous ignition point is 584 ℃and density (solid) is 1.527g/cm3. It is insoluble in cold water and soluble in hot water, ethanol, ether, benzene and other organic solvents.
Phthalic anhydride is an important raw material in chemical industry, especially used in the manufacture of plasticizers like DBP and DOP etc. can also be used together with other materials in the manufacture of products like resin, paint, glass fiber reinforced plastics. At the same time, It also is the raw material of benzoic acid and terephthalic acid.
About the package
About the package, we have two kinds of packages for you,
1. 25kg small bag, it is more concient to use.
2. 500kg big bag, it is more economical.
About the ISO9001 Certificate
ISO9001 Quality Management Certificate
ISO 9001 It is transformed from the world's first quality management system standard BS 5750 (written by BSI), which not only for the quality management system, but also for the overall management system. It helps organizations succeed by improving customer satisfaction, employee motivation, and continuous improvement. The advantages are as follow:
1．Standardized management: Through the establishment of the quality management system, enterprises can standardize their various management activities and processes, and improve the organizational efficiency and operational efficiency.
2．Improve product quality: Quality management system certification emphasizes continuous improvement and quality control, to help enterprises to improve product quality and consistency, and reduce defects and complaints.
3．Strengthen customer orientation: Quality management system certification requires enterprises to pay attention to customer needs, meet customer expectations, and continue to improve to provide better product and service experience.
4．Reduce risks and costs: Through the effective operation of the quality management system, enterprises can reduce quality risks, reduce the generation of unqualified products, and reduce the related costs and losses.
5．Enhance corporate image: quality management system certification is a credit card of the enterprise, which can improve the image and trust of the enterprise, and attract more customers and partners.
6．Meet the market demand: many customers and the market for supplier quality management system certification requirements, which can meet the market demand and expand business opportunities.
FAQ
Q1: Are you the trading company or manufacturer ?
A: We are the manufacturer.
Q2: Can I get a free sample?
A: Yes, a sample less than 2 kg is free, you only need to pay the delivery cost.
Q3. What is your terms of payment?
A:We prefer TT, 30% as deposit, and 70% before delivery. but other ways is also negotiable.
Q4: How long is your delivery time?
A: We can do the delivery as soon as the payment.
Q5. Do you test all your goods before delivery?
A: Yes, we will test the product at least 3 times during the producing, And before delivery we will test it again.
