6521-30-8

Usage

Uses

Used in Food Industry:
4-Hydroxybenzoic acid isoamyl ester is used as a flavoring agent to impart a fruity and strawberry-like taste to various food products.
Used in Cosmetic Industry:
4-Hydroxybenzoic acid isoamyl ester is used as a fragrance ingredient to add a strawberry-like scent to products such as perfumes, lotions, and shampoos.
Used in Cosmetic Formulations:
4-Hydroxybenzoic acid isoamyl ester is used as a preservative in some cosmetic formulations due to its antimicrobial properties, helping to prevent the growth of bacteria and other microorganisms in the products.
However, it is important to note that there is limited scientific information available about the potential health effects of 4-hydroxybenzoic acid isoamyl ester, and it is not approved for use in certain applications, such as food additives in the European Union.

Upstream product

• 120-47-8 Ethyl 4-hydroxybenzoate 
• 25016-92-6 aluminium triisopentylate 
• 123-51-3 i-Amyl alcohol 
• 99-96-7 4-hydroxy-benzoic acid 

Downstream Products

• 134444-08-9 4-[3-(4'-Nonyloxy-biphenyl-4-yl)-propionyloxy]-benzoic acid 3-methyl-butyl ester 

Relevant academic research and scientific papers

Novel Benzothiazole Ionic Liquids as Catalysts for the Synthesis of Parabens

Abstract: A simple and green approach to the esterification of p-hydroxybenzoic acid and aliphatic alcohols to obtain parabens was developed. First, two novel benzothiazole ionic liquids [HBth]H2PW12O40 (IL1) and [HBth]H4PMo12O41 (IL2) were synthesized with benzothiazole and heteropolyacids as starting materials. The synthesized ionic liquids were characterized by FTIR spectroscopy, TGA, PXRD analysis, and SEM. The application of IL1 and IL2 as catalysts for the synthesis of parabens was explored. The results showed that the ILs had a high catalytic activity in the synthesis of parabens, and, at the same time, they could be easily recovered and reused five times without loss of activity.

Synthesis and Transition Temperatures of Some Branched Alkyloxycarbonylphenyl Esters of 3-(4'-n-Alkyl- and alkoxy-biphenyl-4-yl)propanoic Acids and their Laterally Fluorinated Analogues

A number of three ring diesters based on 4'-n-alkoxy- and 4'-n-alkyl-biphenyl-4-ylpropanoic acid have been prepared to investigate the effect on the liquid crystalline behaviour of these compounds of (a) incorporation of branched (achiral) end groups, and (b) laterally positioned fluorine atoms.Many of these diesters exhibited wide temperture range SC and SI phases, especially for compounds containing the 2-methylpentyl end group.Lateral fluorination in both the 2- and 3-positions of the phenolic moiety reduced the melting point and smectic thermal stabilities of the diesters.The reduction in SC thermal stability by incorporation of a laterally positioned fluorine atom in the 2-position was very small, giving rise to compounds with very wide SC ranges (40-50 deg C).Unexpectedly, compounds containing a laterally positioned fluorine atom in the 3-position gave a number of crystal phases.Whether the diesters incorporated a branched terminal group or a laterally positioned fluorine atom, no nematic phase was observed. - Keywords: Fluorinated liquid crystals smectic C phase esters of 4'-n-alkoxybiphenyl-4-ylpropanoic acids esters of 4'-n-alkylbiphenyl-4-ylpropanoic acids