4-Hydroxybenzenesulfonic Acid CAS 98-67-9
High Quality 4-Hydroxybenzenesulfonic Acid CAS 98-67-9
- Appearance:Powder
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: 4-Hydroxybenzenesulfonic Acid
CAS: 98-67-9
MOQ: 1KG
Directory Guidance on 4-Hydroxybenzenesulfonic Acid
Chemical Structure
Basic Info:
| Melting point | 52 °C |
| Boiling point | 275.14°C (rough estimate) |
| density | 1.337 g/mL at 25 °C |
| vapor pressure | 69.8Pa at 20℃ |
| refractive index | n20/D 1.489 |
| solubility | Water (Slightly) |
Product Introduction:
4-Hydroxybenzenesulfonic Acid, also known as p-hydroxybenzenesulfonic acid, is an important organic compound with a chemical formula of C₆H₆O₄S and a molecular weight of about 174.17. It usually appears as a white crystalline powder or a reddish-brown liquid, has significant acidity, a melting point of 50°C (decomposition), a density of 1.337 g/cm³, a refractive index of 1.489, and is easily soluble in water, hot alcohol, and glycerol.
The chemical properties of 4-Hydroxybenzenesulfonic Acid mainly come from the hydroxyl and sulfonic acid groups in its molecular structure. It has acidity, oxidizing and reducing properties, and can react with alkali to form corresponding salts, such as sodium p-hydroxybenzenesulfonate. In addition, it can also undergo substitution reactions, addition reactions, etc. with other organic compounds. In industrial applications, 4-Hydroxybenzenesulfonic Acid is an important organic synthesis intermediate, widely used in medicine, dyes, pigments, surfactants and other fields. It is also used as an acidic catalyst to promote a variety of organic reactions.
In the industrial field, 4-Hydroxybenzenesulfonic Acid is widely used. It is the main additive in the acid tin plating process, which can improve the performance of the electroplating process and the characteristics of the product. In addition, it is also used in the production process of high molecular polymers as a catalyst or additive to help improve the performance of polymers. In terms of resin curing, 4-Hydroxybenzenesulfonic Acid can be used as a curing agent for room temperature curing of casting resins. It can also be used to synthesize dyes containing nitrogen and oxygen heterocyclic structures, and as a raw material for certain chemical additives and surfactants.
Although 4-Hydroxybenzenesulfonic Acid is of great value in industry and chemical synthesis, safety regulations need to be strictly followed during use. It has a strong irritating effect on the eyes, skin, mucous membranes and upper respiratory tract. After inhalation, it may cause spasm, inflammation and edema of the larynx and bronchus, and even chemical pneumonia or pulmonary edema. Therefore, when storing and using it, containers with good acid and alkali resistance should be selected, and stored in a cool and ventilated warehouse to avoid contact with oxidants and alkalis. Once a leak occurs, immediate measures should be taken to deal with it to prevent harm to the environment and human health.
Nature and Specifications:
| Item | Specification |
| Product Name | 4-Hydroxybenzenesulfonic Acid |
| CAS No. | 98-67-9 |
| Appearance | Powder |
| Shelf Life | 2 years |
| Packing | As your requirements |
| pka | 9.11(at 25℃) |
| form | Liquid |
| color | White to Light yellow to Light red |
| Specific Gravity | 1.337 |
| Water Solubility | Soluble in water. |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
- Packing pictures and loading video before loading
- Free Sample
- Factory audit
4-Hydroxybenzenesulfonic Acid has many uses in pharmaceutical research and production. Primarily used as an intermediate in drug synthesis processes that produce nonsteroidal anti-inflammatory drugs, antibiotics and other therapeutics, it can also improve drug stability, solubility and bioavailability and efficacy – further expanding its application within this sector of industry. Furthermore, 4-Hydroxybenzenesulfonic Acid may even serve as an excipient in certain formulations further expanding its applications within pharmaceutical production processes and increasing its applications within its application within its specific applications within pharmaceutical production processes.
4-Hydroxybenzenesulfonic Acid is an invaluable synthetic raw material in the field of dyes and pigments, serving as an indispensable raw material to produce acid dyes, disperse dyes and acid dyes, widely used across industries such as textiles, printing and plastics. Due to its chemical structure, 4-HBSA also interacts with functional groups in dye molecules for greater color stability and solubility; additionally it can also be used to synthesize pigments for coatings and inks applications.
4-Hydroxybenzenesulfonic Acid has become an invaluable tool in the field of surfactants, providing anionic surfactant syntheses with improved properties for emulsification, dispersion and detergency – as well as being widely utilized for use in producing detergents, emulsifiers and other products. Furthermore, using 4-Hydroxybenzenesulfonic Acid for surfactant development not only increases product performance, but opens up further avenues for product innovation development related to related fields.
4-Hydroxybenzenesulfonic Acid is one of the key additives in acid tin plating processes, making an essential addition to electroplating solutions for improving their performance and making uniform and dense coatings, thus increasing product quality and appearance. Its role as an enhancing component makes this an indispensable ingredient when treating metal surface treatments.
4-Hydroxybenzenesulfonic Acid has an integral part in resin curing and polymers production, serving both as a curing agent or foaming agent to speed the curing reaction and improve mechanical properties and heat resistance of resins, while at the same time acting as an additive during polymer production to control polymerization rates and modify properties; when producing high performance materials it can even be used to synthesize polymers with specific features, such as conducting properties.
1. Multifunctional Reactivity
4-Hydroxybenzenesulfonic Acid’s unique combination of hydroxyl and sulfonic acid groups creates both electrophilic and nucleophilic reactive sites, providing nucleophilic reactions as well as nucleophilic ones for modification. Sulfonic acid groups can effect directional modification through sulfonation-desulfonation reactions while its hydroxyl groups provide the basis for tailoring derivatives – making this unique compound irreplaceable in fine chemical synthesis.
2. Outstanding Safety and Environmental Protection Characteristics
Acute toxicity experiments reveal that 4-Hydroxybenzenesulfonic Acid’s oral lethal dose 50 (LD50) for mice is 6400 mg/kg, making it a low-toxic substance (GHS Classification: Category 4), with water-soluble properties making wastewater treatment simpler than with electroplating additives containing chromium or nickel; its bioaccumulation risk was cut in half in comparison with their electroplating additive counterparts; therefore fulfilling EU REACH regulations requirements.
3. Significant Cost Advantage
Raw materials such as phenol and sulfuric acid remain at stable prices, and large-scale production ensures a cost per ton for 4-Hydroxybenzenesulfonic Acid of around 18,000 Yuan which is about 30 percent lower than imported equivalent products. Furthermore, liquid formulation with concentration levels between 65%-75% reduces packaging and transportation costs by 15% which meets cost reduction needs of downstream companies.
4. Application Potential in Emerging Fields
According to recent research, 4-Hydroxybenzenesulfonic Acid can significantly extend cycle life beyond 5,000 times while simultaneously increasing energy density to 395.8 mAh/g. This provides an innovative solution for future aqueous energy storage devices.
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Related References:
chemicalbook-4-Hydroxybenzenesulfonic Acid
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