1832-55-9

Basic information

• Product Name: Phosphonic acid, methyl-, monobutyl ester
• Synonyms: BUMPA;Methyl-phosphonic acid monobutyl ester;n-butyl methylphosphonic acid;mono-n-butyl ester methanephosphonate;butyl hydrogen methylphosphonate;methylphosphonic acid monobutyl ester;butyl methylphosphonic acid
• CAS NO: 1832-55-9
• Molecular Formula: C5H13O3P
• Molecular Weight: 152.12900
• Mol File: 1832-55-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphonic acid, methyl-, monobutyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphonic acid, methyl-, monobutyl ester(1832-55-9)
• EPA Substance Registry System: Phosphonic acid, methyl-, monobutyl ester(1832-55-9)

Safety Data

• Hazardous Substances Data: 1832-55-9(Hazardous Substances Data)

Usage

General Description

Phosphonic acid, methyl-, monobutyl ester is a chemical compound that is commonly used as a scale and corrosion inhibitor in water treatment processes, as well as a component in the synthesis of different organic compounds. It is also used as a stabilizer and sequestering agent in various industrial applications. Phosphonic acid, methyl-, monobutyl ester is known for its high thermal stability and resistance to acidic and alkaline environments, making it a versatile and valuable chemical in different industries. However, it is important to handle and use this chemical with caution, as prolonged exposure or ingestion may lead to harmful effects on human health and the environment.

Upstream product

• 993-13-5 methylphosphonic acid 
• 71-36-3 butan-1-ol 

Downstream Products

• 172529-93-0 3-[n-butoxy(methyl)phosphoryl]-1-cyanopropyl acetate 
• 2404-73-1 dibutyl methylphosphonate 

Relevant articles and documents

Microwave-assisted ionic liquid-catalyzed selective monoesterification of alkylphosphonic acids—an experimental and a theoretical study

It is well-known that the P-acids including phosphonic acids resist undergoing direct es-terification. However, it was found that a series of alkylphoshonic acids could be involved in mo-noesterification with C2–C4 alcohols under microwave (MW) irradiation in the presence of [bmim][BF4] as an additive. The selectivity amounted to 80–98%, while the isolated yields fell in the range of 61–79%. The method developed is a green method for P-acid esterification. DFT calculations at the M062X/6–311+G (d,p) level of theory (performed considering the solvent effect of the corresponding alcohol) explored the three-step mechanism, and justified a higher enthalpy of activation (160.6–194.1 kJ·mol–1) that may be overcome only by MW irradiation. The major role of the [bmim][BF4] additive is to increase the absorption of MW energy. The specific chemical role of the [BF4] anion of the ionic liquid in an alternative mechanism was also raised by the computations.