3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone Cas 7545-50-8
Product Description
Product Name: 3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone
Synonyms: Bis(3-aMino-4-hydroxyphenyl) Sulfone
CAS No. 7545-50-8
M.F.: C12H12N2O4S
M.W.: 280.3
EINECS: 231-428-8
Specifications
| Item | Specification |
| Appearance | White to Gray to Brown Powder |
| Assay | ≥98.0% |
Density
| 1.564±0.06 g/cm3(Predicted) |
| Melting Point | 231 °C |
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3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone is a specialized organic chemical compound. Here's a breakdown of what it is and its primary uses.
What It Is (Chemical Identity)
Structure: It is a diphenyl sulfone derivative, meaning it consists of two benzene rings connected by a sulfone group (-SO2-). Each ring has specific substituents: an amino group (-NH2) and a hydroxyl group (-OH) in adjacent positions (3 and 4, respectively).
Formula: C₁₂H₁₂N₂O₄S
Appearance: Typically a light-colored (tan to brown) crystalline powder.
Key Features: It is a tetrafunctional monomer, meaning it has four reactive sites:
Two primary aromatic amine groups (-NH2)
Two phenolic hydroxyl groups (-OH)
This multifunctionality is what makes it valuable in polymer synthesis.
Primary Uses and Applications
Its uses are almost exclusively in the field of high-performance polymer synthesis, where it serves as a key building block (monomer or crosslinking agent).
1. High-Temperature/High-Performance Polymers
Polybenzoxazines: This is one of its most significant applications. Polybenzoxazines are a relatively new class of thermosetting polymers known for exceptional thermal stability, flame retardancy, low moisture absorption, and good dielectric properties. 3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone is used as a diamine-phenol bifunctional monomer to synthesize benzoxazine resins. These resins, upon curing, form crosslinked polybenzoxazine networks with enhanced glass transition temperatures (Tg) and thermal stability compared to those from simpler monomers. These materials are targeted for aerospace composites, electronic encapsulants, and high-temp adhesives.
Polyimides and Polyamide-imides: It can be used as a diamine monomer in reactions with dianhydrides (e.g., pyromellitic dianhydride) to form sulfone-containing polyimides. The sulfone group introduces polarity, potentially improving adhesion and solubility, while the rigid structure contributes to high-temperature resistance. These are used in films, coatings, and composite matrices.
Epoxy Curing Agent/Hardener: Its two amine groups can react with epoxy resins. The resulting cured network incorporates the rigid diphenyl sulfone structure, leading to epoxies with improved heat resistance, chemical resistance, and mechanical strength at elevated temperatures. This is valuable for advanced composites and structural adhesives.
Polysulfones Modification: While traditional polysulfones like PSU, PES, and PPSU are made from bisphenol S, this monomer can be used to create novel amine- and hydroxyl-functionalized polysulfone oligomers or polymers with different reactivity and property profiles.
2. Potential Use as an Intermediate in Pharmaceuticals or Agrochemicals
The diphenyl sulfone core is present in some pharmaceuticals (e.g., certain antibacterial or antiparasitic drugs like dapsone). While 3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone itself is not a commonly used drug, it serves as a sophisticated chemical intermediate in research laboratories for synthesizing complex molecules for biological testing. Its multiple functional groups allow for selective chemical modifications.
Key Properties that Drive its Uses
High Thermal & Oxidative Stability: The aromatic rings and sulfone linkage provide rigidity and stability.
Reactivity: The amine and hydroxyl groups allow it to participate in polycondensation (forming polymers with the elimination of water or small molecules) and addition reactions.
Polarity: The sulfone group is highly polar, which can influence the solubility and adhesion properties of the final polymer.
Summary
3,3'-Diamino-4,4'-dihydroxydiphenyl sulfone is a specialized, multifunctional monomer primarily used in polymer chemistry to synthesize high-performance thermosetting and thermoplastic materials. Its main value lies in imparting exceptional thermal stability, rigidity, and strength to polymers like polybenzoxazines, polyimides, and advanced epoxies for demanding applications in aerospace, electronics, and advanced composites. Its use as a research chemical for synthesizing bioactive molecules is a secondary, more niche application.
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5.What's your MOQ?
Different products have different MOQ, such as:
1).Peptide products, the MOQ is 1 gram level
2).Liquid products, the MOQ is usually 50-100ML
3).API, the MOQ is 1KG
4).Intermediate products and conventional product, the MOQ is 1KG; custom-tailored products, the MOQ depends on the production process.
5).Food additives and vitamin, the MOQ is usually one package: such as Vitamin C is 25KG / drum, Vitamin E oil or Vitamin A oil is 5KG/bag;Vitamin E powder or Vitamin A powder is 20KG / cartons.
6).Agrochemical , the MOQ is 1KG, except preparations.
6.How do we take the quality complaint ?
First of all, our quality control will reduce the quality issue to near zero. If there is a quality problem caused by us, we will send you free goods for replacement or compensate your loss.
Company Information
Company profile
Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives, Fine chemicals in distributing the products of our own company and affiliated enterprises, are the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients’ requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.
We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward powder, their satisfaction is our struggling goal.
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