3,6-DICHLORO-2-HYDROXY BENZOIC ACID

Name	3,6-Dichloro-2-Hydroxybenzoic Acid
Synonyms	AKOS BBS-00006746 Dichlorosalicylicacid OTAVA-BB BB7020410042 3,6-dichloro-salicylicaci 3,6-Dichlorosalicylic Acid 3,6-DICHLOROSALICYLIC ACID 2-hydroxy-3,6-dichlorobenzoic acid 3,6-Dichloro-2-Hydroxybenzoic Acid 3,6-Dichloro-2-Hydroxy Benzoic Acid 3,6-DICHLORO-2-HYDROXY BENZOIC ACID Benzoic acid,3,6-dichloro-2-hydroxy-
CAS	3401-80-7
EINECS	222-275-8
InChI	InChI=1/C7H4Cl2O3/c8-3-1-2-4(9)6(10)5(3)7(11)12/h1-2,10H,(H,11,12)

Molecular Formula	C7H4Cl2O3
Molar Mass	207.01
Density	1.5281 (rough estimate)
Melting Point	approximate 195℃ (dec.)
Boling Point	297.29°C (rough estimate)
Flash Point	139.3°C
Solubility	DMSO (Soluble), Methanol (Slightly)
Vapor Presure	0.000331mmHg at 25°C
Appearance	Solid
Color	White to Off-White
pKa	1.99±0.25(Predicted)
Storage Condition	2-8°C
Refractive Index	1.4845 (estimate)
Physical and Chemical Properties	This product is white crystal, m.p.188 ~ 191 ℃, insoluble in water, soluble in alkali and organic solvents.

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
Uses	3, 6-dichloro-2-hydroxybenzoic acid is an intermediate of the herbicide dicamba.
production method	its preparation method is to prepare sodium phenol salt solution with 2,5-dichlorophenol and liquid caustic soda, dry it in vacuum, then cool the kettle to 100 ℃, slowly introduce dry carbon dioxide, stop the feed of carbon dioxide when the pressure in the kettle reaches 588 ~ 686kPa, and generate phenol carbonate, the molecular rearrangement reaction occurs at 130~140 ℃ to obtain sodium 3, 6-dichloro-2-hydroxybenzoate, which is then dissolved in water, filtered, and acidized to obtain the product.

Last Update：2024-04-09 21:04:16