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4-Hydroxybenzenesulfonic Acid CAS 98-67-9

Molecular Formula: C6H6O4S

Formula Weight: 174.17

ZSpharmac: 4-Hydroxybenzenesulfonic Acid Supplement

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Product Name: 4-Hydroxybenzenesulfonic Acid
CAS No: 98-67-9
Purity: 99%

Basic Info

Product Name:4-Hydroxybenzenesulfonic Acid
Other Names:4-hydroxybenzenesulfonicaci
CAS:98-67-9
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Organic Chemical Raw Materials
Appearance:White Crystal Powder
EINECS No.:202-691-6
Storage:Cool Dry Place
Provide:4-Hydroxybenzenesulfonic Acid MSDS;
4-Hydroxybenzenesulfonic Acid COA

What is 4-Hydroxybenzenesulfonic Acid?

p-Hydroxybenzenesulfonic acid (4-hydroxybenzenesulfonic acid) is a white crystalline powder, soluble in water, hot alcohol as well as glycerin. As a very vital intermediate in organic synthesis and pharmaceutical industry, sodium p-hydroxybenzenesulfonate has progressively been uncovered by individuals with its non-negligible research value and also industrial value. If p-hydroxybenzenesulfonic acid is inhaled, relocate person to fresh air; in case of skin contact, get rid of contaminated garments, wash skin extensively with soap and water, and seek clinical interest if discomfort takes place.

4-Hydroxybenzenesulfonic Acid Properties:

Melting point 52 °C
Boiling point 275.14°C (rough estimate)
density 1.337 g/mL at 25 °C
refractive index n20/D 1.489
pka9.11(at 25℃)
form Liquid
Specific Gravity1.337
Water Solubility Soluble in water.

 

4-Hydroxybenzenesulfonic Acid Uses

  1. p-Hydroxybenzenesulfonic acid is used as a room temperature curing agent for casting resins.
  2. P-Hydroxybenzenesulfonic acid is the most important additive in the acid tin plating process, and also has the effect of acid resin foaming.
  3. p-Hydroxybenzenesulfonic acid is an organic intermediate.

Preparation of p-hydroxybenzenesulfonic Acid

Method 1: Synthesis of phenol-4-sulfonic acid: take 100 g of mesitylene, add 78 g of phenol into it, heat it to 65°C in a water bath, add 4 g of phosphorous acid as a catalyst, add the raw materials to the feed tank at one time, and add the raw materials in concentrated sulfuric acid. Add 82 g of concentrated sulfuric acid to the feed tank, to make sure that n(H2SO4): n(C6H6O)=1:1, n(C9H12): n(C6H6O)=1:1. The temperature level was increased to 100 ° C. Switch on the stirring paddle and the hypergravity reactor, adjust the rotor rate of the hypergravity activator, and also maintain the rotational speed of the hypergravity activator 10 at 2000 rpm. After the temperature and also tools were stabilized, the feeding was started, as well as the feeding price was 250 mL/min. After the feeding was finished, the cycle was distributed for 3 min to acquire phenol-4-sulfonic acid.
Method 2: Weigh 1325kg of liquefied phenol and 1550kg of 98% concentrated sulfuric acid respectively. Put the liquefied phenol into the sulfonation kettle, raise the temperature to 60°C, slowly add the concentrated sulfuric acid dropwise and control the addition within 30min, keep the temperature not more than 80°C, raise the temperature to 90°C after dropping the concentrated sulfuric acid, and conduct the sulfonation reaction for 2h , to obtain phenol-4-sulfonic acid.
Method 3: Add phenol to a four-necked flask, heat it to melt, add 8.5-10.5% concentrated sulfuric acid (mass percentage concentration is 98%) of phenol mass after the phenol is melted, and heat up to 100-110 ℃ for sulfonation The reaction is carried out for 1.0 to 1.5 hours to generate phenol-4-sulfonic acid from part of the phenol. Note that the sulfonation reaction temperature is controlled above 100 °C, below this temperature, there will be ortho-sulfonated products, because the main products are para-sulfonated.

4-Hydroxybenzenesulfonic Acid is Widely Used

1. Preparation of a new type of aromatic side chain sulfonated diamine.
Taking 4,4′-diaminodiphenyl ether as raw material, reacting with p-hydroxybenzenesulfonic acid after oxidation and bromination, and finally obtaining a novel aromatic side chain type sulfonated diamine through reduction reaction. In the novel fragrant side chain kind sulfonated diamine of the here and now innovation, the hydrophilic team sulfonic acid group is located on the side chain group.Since its spatial position is far away from the main chain, the proton conduction efficiency is improved and the influence on the main chain structure is avoided.
The new aromatic side chain sulfonated diamine can be prepared with dianhydride monomers and non-sulfonated diamine monomers to obtain sulfonated polyimides. The sulfonated polyimides can be used to prepare Performance and Proton Conductivity of Proton Exchange Membranes. The novel aromatic side chain sulfonated diamines have good application prospects in proton exchange membrane fuel cells.
2. Prepare a high temperature and corrosion resistant adhesive,
It includes (by mass percentage), 30% to 40% of p-hydroxybenzenesulfonic acid-nitroacetaldehyde-adhesive latex; the catalyst is caustic alkali or triphenylphosphine, and the content is 1-2%; Inorganic flame retardant, which is hydroquinone or p-phenol, with a content of 1-3%; modified nano-magnesium oxide, 2-20%; inorganic flame retardant, which is magnesium hydroxide, aluminum hydroxide and magnesium-aluminum hydrotalcite with 2% : 7: 3 parts by mass, the content of the inorganic flame retardant is 5% to 10%; the balance is phenolic resin.
Wherein, the p-hydroxybenzenesulfonic acid-nitroacetaldehyde-glue latex contains 20wt% of p-hydroxybenzenesulfonic acid, 20wt% of nitroacetaldehyde, 3wt% to 5wt% of carbon black, 5wt% to 10wt% of Nanoscale silicon dioxide powder, 5wt%-10wt% nanoscale zirconia powder, 5wt%-10wt% antioxidant and 1wt%-2wt% dispersant, and the rest are latex emulsion.
3. Prepare a high-viscosity adhesive,
It includes (by mass percentage), 30% to 40% of p-hydroxybenzenesulfonic acid-nitroacetaldehyde-glue latex; the catalyst is caustic alkali or triphenylphosphine, and the content is 1~2%; polymerization inhibition agent, which is hydroquinone or p-phenol, with a content of 1~3%; fumed silica, 2~20%; tackifier, which is γ-methacryloyloxypropyltrimethylsilane and propylene The amide is a mixture with a mass ratio of 10:1, and the content is 5% to 10%; the balance is phenolic resin.
Wherein, the p-hydroxybenzenesulfonic acid-nitroacetaldehyde-adhesive latex contains 20wt% of p-hydroxybenzenesulfonic acid, 20wt% of nitroacetaldehyde, 3wt% to 5wt% of oxidized starch, 5wt% to 10wt% of Nanoscale silicon dioxide powder, 5wt%~10wt% nanoscale zirconia powder, 5wt%~10wt% antioxidant and 1wt%~2wt% dispersant, and the rest are latex emulsion.

4. Prepare a naphthalene-based water decreasing agent,
The approach consists of the adhering to steps: (1) sulfonating methylnaphthalene as well as phenol respectively to acquire a sulfonated methylnaphthalene product and a p-hydroxybenzenesulfonic acid material; (2) carrying out a hydrolysis response on the sulfonated methylnaphthalene material, and also azeotropically eliminates without treatment The reacted methylnaphthalene or its homologue, the remaining sulfonated methylnaphthalene product gets in the reaction in step (3 ); (3) the sulfonated methylnaphthalene material acquired symphonious (2 ), the p-hydroxyl team gotten in step (1) The formaldehyde acidified by the focused sulfuric acid of the benzenesulfonic acid material executes a condensation response to acquire a compressed product; (4) in the condensation product acquired in step (3 ), an alkaline service is added to execute a neutralization reaction to a pH value of 7.5 to 9, and the reaction ends up to acquire a naphthalene-based reducing agent. Water agent.
The above-mentioned naphthalene-based water minimizing agent has excellent properties such as good flexibility to cement, great workability of concrete, strong plastic retention performance, small loss of concrete over time, high water reduction rate, etc; and also the prep work approach is straightforward in process as well as response problems. It is simple to regulate, as well as it can additionally minimize the production expense of naphthalene water decreasing representative.
5. Encapsulation material for semiconductor light-emitting parts with high warm dissipation, involving the technology of semiconductor light-emitting parts.

4-Hydroxybenzenesulfonic Acid Synthesis Method

Synthesis of p-hydroxybenzenesulfonic acid:
Get 100g of mesitylene, add 78g of phenol into it, heat to 65°C in a water bath, add 4g of phosphorous acid as a catalyst, add the raw material to the feed tank at one time, and add 82g of concentrated sulfuric acid in the concentrated sulfuric acid feed tank to make n( H2SO4):n(C6H6O)=1:1, n(C9H12):n(C6H6O)=1:1. The temperature was raised to 100°C. Turn on the stirring paddle and the hypergravity reactor, adjust the rotor speed of the hypergravity reactor, and maintain the rotational speed of the hypergravity reactor 10 at 2000 rpm. After the temperature and equipment were stabilized, the feeding was started, and the feeding rate was 250 mL/min. After the feeding was completed, the cycle was circulated for 3 min to obtain p-hydroxybenzenesulfonic acid.

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.

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FAQ

Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.

 

HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?

You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

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Different quantity has different discount.

Shipping

1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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