162922-16-9

Basic information

• Product Name: Acetic acid, (4-hydroxy-2-methylphenoxy)-
• CAS NO: 162922-16-9
• Molecular Formula: C9H10O4
• Molecular Weight: 182.176
• Mol File: 162922-16-9.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Acetic acid, (4-hydroxy-2-methylphenoxy)-(CAS DataBase Reference)
• NIST Chemistry Reference: Acetic acid, (4-hydroxy-2-methylphenoxy)-(162922-16-9)
• EPA Substance Registry System: Acetic acid, (4-hydroxy-2-methylphenoxy)-(162922-16-9)

Safety Data

• Hazardous Substances Data: 162922-16-9(Hazardous Substances Data)

Upstream product

• 1878-49-5 o-methylphenoxyacetic acid 
• 102-71-6 triethanolamine 
• 94-74-6 MCPA 

Downstream Products

• 186552-02-3 (4-cyano-2-methylphenoxy)acetic acid methyl ester 
• 870195-29-2 (4-{4-[2-(2,4-dichloro-phenoxy)-ethyl-carbamoyl]-5-phenyl-isoxazol-3-yl}-2-methyl-phenoxy)-acetic acid methyl ester 
• 870195-27-0 [4-(hydroxyimino-methyl)-2-methyl-phenoxy]-acetic acid methyl ester 
• 476156-34-0 (4-formyl-2-methyl-phenoxy)-acetic acid methyl ester 
• 317319-10-1 methyl (4-hydroxy-2-methylphenoxy)acetate 

Relevant articles and documents

Tris(2-hydroxyethyl)ammonium 4-halo-2-methylphenoxyacetates (halocresacins)

Convenient and efficient procedures have been developed for the synthesis of tris(2-hydroxyethyl)-ammonium 4-halo-2-methylphenoxyacetates (halocresacins). 4-Chloro-2-methylphenoxyacetic acid necessary for the preparation of chlorocresacin has been obtained by chlorination of 2-methylphenoxyacetic acid with sulfuryl chloride in the presence of aluminum powder. Bromocresacin has been synthesized by reaction of triethanolamine with 4-bromo-2-methylphenoxyacetic acid prepared by bromination of 2-methylphenoxyacetic acid with molecular bromine. Fluoro- and iodocresacins have been synthesized by exchange reaction of chlorocresacin with potassium fluoride and sodium iodide, respectively.

Phototransformation of 4-chloro-2-methylphenoxy acetic acid (MCPA)

MCPA was irradiated in various conditions: in aqueous solution at different wavelengths, on silica in the absence of water, in the presence of TiO2 in aqueous suspension. In solution a wavelength effect was observed: the formation of 4-hydroxy-2-methylphen-oxyacetic acid is the main pathway at wavelengths shorter than 300 nm, whereas 4-chloro-2-methylphenol is the main product resulting from sunlight irradiation. Direct photolysis on silica and photocatalytic transformation mainly lead to the formation of 4-chloro-2-methylphenol. by Oldenbourg Wissenschaftsverlag, Mu?nchen.