5381-98-6

Basic information

• Product Name: Anhydro-(O-carboxyphenyl)phosphorochloridate
• Synonyms: 2-Chloro-4H-1,3,2-benzodioxaphosphorin-4-one 2-oxide;Anhydro-(O-carboxyphenyl)phosphorochloridate;Salicylic Acid Phosphorochloridate Cyclic Anhydride;Anhydro-(O-carboxyphenyl)phosphorochloridate, >90%
• CAS NO: 5381-98-6
• Molecular Formula: C7H4ClO4P
• Molecular Weight: 218.53
• Product Categories: All Inhibitors;Inhibitors;Intermediates & Fine Chemicals;Pharmaceuticals;Phosphorylating and Phosphitylating Agents
• Mol File: 5381-98-6.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 326.2°Cat760mmHg
• Flash Point: 208°C
• Appearance: /
• Density: 1.62g/cm³
• Vapor Pressure: 0.000219mmHg at 25°C
• Refractive Index: 1.575
• Storage Temp.: Refrigerator, Under Inert Atmosphere
• Solubility: Chloroform (Slightly), DMSO (Slightly)
• CAS DataBase Reference: Anhydro-(O-carboxyphenyl)phosphorochloridate(CAS DataBase Reference)
• NIST Chemistry Reference: Anhydro-(O-carboxyphenyl)phosphorochloridate(5381-98-6)
• EPA Substance Registry System: Anhydro-(O-carboxyphenyl)phosphorochloridate(5381-98-6)

Safety Data

• Hazardous Substances Data: 5381-98-6(Hazardous Substances Data)

Usage

Chemical Properties

Off-White Solid

Uses

Different sources of media describe the Uses of 5381-98-6 differently. You can refer to the following data:
1. A enicillin-Like?inhibitor of ?Lactamases
2. A “Penicillin-Like”-inhibitor of β-Lactamases.

InChI:InChI=1/C7H4ClO4P/c8-13(10)11-6-4-2-1-3-5(6)7(9)12-13/h1-4H

Upstream product

• 69-72-7 salicylic acid 
• 6099-41-8 2-dichlorophosphoryloxy-benzoyl chloride 

Relevant articles and documents

Novel phosphorus-containing silazanes as flame retardants in epoxy resins

Molecules containing different elements and moieties like P-N and P-O-Si have high impact on flame retardant properties. In this study, a novel group of flame retardants based on phosphasilazanes containing a P-N-Si structure is established. Due to introduction of the silazane moiety to various phosphorus environments, further properties, like mechanical or thermal, besides flame retardancy can be altered. The influence of phosphorus or silicon moieties and their mode of action on flame retardant properties is examined. In formulations with a high-performance epoxy resin, thermal properties (glass transition temperature and moisture absorption) and flame retardant performance (UL94 vertical burning test, cone calorimetry) are investigated. Alteration of chemical environment at the phosphorus atom determines various implications on burning behavior. For example, phosphorus-containing moieties promoting char generation and intumescence enhance char yields and other parameters describing flame retardant properties of phosphasilazanes in thermo-analysis as well as in cone calorimetry. On the other hand, higher concentration of silazane groups in the structure leads to higher flammability. Phosphorus moieties acting in gaseous phase cause poor flame retardant properties because they antagonize the char generation of silazanes.