4-Hydroxybenzoic acid

4-Hydroxybenzoic acid

p-Hydroxybenzoic acid; para-Hydroxybenzoic acid; p-Carboxyphenol; 4-Hydroxybenzenecarboxylic acid

CAS 99-96-7

Chemical Formula C7H6O3

Molecular Weight 138.12 g/mol

4-hydroxybenzoic acid, also known as p-hydroxybenzoic acid. 4-Hydroxybenzoic acid, also known as p-hydroxybenzoic acid, is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. 4-Hydroxybenzoic acid is primarily known as the basis for the preparation of its esters, known as parabens, which are used as preservatives in cosmetics and some ophthalmic solutions. It is isomeric with 2-hydroxybenzoic acid, known as salicylic acid, a precursor to aspirin, and with 3-hydroxybenzoic acid.

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Industrial Uses

1. Food & Beverage

  • Preservative: 4-Hydroxybenzoic acid is a precursor for the production of parabens, which are widely used as preservatives in various food products to extend shelf life by preventing microbial growth.
  • Flavor Enhancer: It can act as a flavor enhancer in some foods and beverages, improving the overall taste profile by interacting with other flavor compounds.

2. Pharmaceuticals

  • Intermediate in Drug Synthesis: 4-Hydroxybenzoic acid serves as an intermediate in the synthesis of various pharmaceutical compounds, including some antibiotics and antiseptics.
  • Antimicrobial Agent: Its derivatives, such as parabens, are used in pharmaceutical formulations for their antimicrobial properties, helping to preserve the products and prevent contamination.

3. Personal Care

  • Preservative: 4-Hydroxybenzoic acid is primarily used in the synthesis of parabens, which are common preservatives in cosmetic and personal care products like lotions, shampoos, and makeup to prevent microbial growth and extend shelf life.
  • pH Adjuster: It can be used to adjust pH levels in various cosmetic formulations to maintain product stability and enhance the effectiveness of active ingredients.

4. Lubricants & Automobiles

  • Additive in Lubricants: 4-Hydroxybenzoic acid may be used as an additive or intermediate in the production of high-performance polymers that are used in automotive lubricants, where chemical stability and resistance to degradation are critical.
  • Corrosion Inhibition: Its derivatives can serve as part of formulations that protect metal parts in automobiles from corrosion during the manufacturing process or in automotive fluids.

5. Flavours & Fragrances

  • Fragrance Stabilizer: In the fragrance industry, derivatives of 4-hydroxybenzoic acid, such as parabens, are often used as preservatives to ensure the longevity and stability of fragrance products.
  • Fixative Agent: It may also be involved in the formulation of fixatives, which help preserve the longevity of scents in perfumes and body sprays.

6. Animal Healthcare

  • Preservative in Veterinary Products: Similar to its role in pharmaceuticals, 4-hydroxybenzoic acid's derivatives, such as parabens, are used as preservatives in animal healthcare products, including topical creams, ointments, and veterinary formulations, to extend shelf life and prevent microbial contamination.

Specifications

Assay ≥ 99%
Appearance White crystalline powder
Odor Odorless
Boiling Point 336°C (637°F) (decomposes)
Melting Point 213-215°C (415-419°F)
Density 1.46 g/cm³ at 20°C
Solubility Soluble in hot water, ethanol, ether; slightly soluble in cold water
Viscosity Not applicable (solid at room temperature)
Flash Point 210°C (410°F) (closed cup)

Hazard Symbols

Corrosives
Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of 4-Hydroxybenzoic acid in India?
The price of 4-Hydroxybenzoic acid can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91-22-4343 2121 directly for a customized quote tailored to your needs.

2. Where can I buy 4-Hydroxybenzoic acid in India?
You can purchase 4-Hydroxybenzoic acid from MULTICHEM, a leading importer with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across India. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for 4-Hydroxybenzoic acid?
Our minimum order quantity (MOQ) for 4-Hydroxybenzoic acid is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of 4-Hydroxybenzoic acid supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.