67538-57-2

Basic information

• Product Name: isopropyl hydrogen methylphosphonite
• Synonyms: isopropyl hydrogen methylphosphonite;Methylphosphonous acid 1-methylethyl ester;Methylphosphonous acid isopropyl ester
• CAS NO: 67538-57-2
• Molecular Formula: C₄H₁₁O₂P
• Molecular Weight: 122.102701
• EINECS: 266-713-6
• Mol File: 67538-57-2.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 145.5°C at 760 mmHg
• Flash Point: 41.8°C
• Appearance: /
• Vapor Pressure: 1.92mmHg at 25°C
• CAS DataBase Reference: isopropyl hydrogen methylphosphonite(CAS DataBase Reference)
• NIST Chemistry Reference: isopropyl hydrogen methylphosphonite(67538-57-2)
• EPA Substance Registry System: isopropyl hydrogen methylphosphonite(67538-57-2)

Safety Data

• Hazardous Substances Data: 67538-57-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C4H11O2P/c1-4(2)6-7(3)5/h4-5H,1-3H3

Upstream product

• 1445-76-7 methylphosphonic chloride isopropyl ester 

Relevant articles and documents

Process for preparing monoalkyl phosphonites

The invention relates to a process for preparing monoalkyl phosphonites of the formula I STR1 where R1 is (C1 -C16)-alkyl, cyclohexyl, cyclopentyl, or phenyl, each of which can also be substituted by halogen, (C1 -C6)-alkyl, (C1 -C6)-alkoxy or dialkylamino groups and R2 is (C1 -C8)-alkyl, which comprises reacting dichlorophosphines of the formula (II) where R1 has the meaning given above, with alcohols of the formula (III) where R2 has the meaning given above, the molar ratio of dichlorophosphine/alcohol being 1:3 to 1:20, and then, as soon as the content of ionic chlorine in the reaction mixture is 50-75% of the theoretical total chlorine content of the reaction mixture, reacting the mixture with ammonia.