4-(2,4-二氯苯氧基)丁酸

Description

4-(2,4-dichlorophenoxy)butyric acid · CAS 94-82-6 · C10H10Cl2O3. UNII SL314DW868. Melting Point: 118-120 °C; Vapor Pressure: 0.0000111 [mmHg]; LogP: log Kow= 3.53.

Identification

CAS Registry Number	94-82-6
PubChem CID	1489
Molecular formula	C10H10Cl2O3
IUPAC name	4-(2,4-dichlorophenoxy)butanoic acid
UNII (FDA)	SL314DW868

Computed Descriptors

Molecular Weight	249.09
XLogP3	3.5
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	5
Exact Mass	248.0006996
Monoisotopic Mass	248.0006996
Topological Polar Surface Area	46.5
Heavy Atom Count	15
Formal Charge	0

Physical & Chemical Properties

Melting Point	118-120 °C
Vapor Pressure	0.0000111 [mmHg]
LogP	log Kow= 3.53
LogP	3.53
Dissociation Constants	pKa= 4.95 at 25 °C

Physical description & handling notes

• 2,4-db appears as colorless crystals. Slightly corrosive to iron. A chlorinated phenoxy herbicide. Soluble in organic solvents.
• White to light brown solid; [HSDB] Colorless solid; [CAMEO]
• White crystals
• White to light brown crystals
• Slightly phenolic
• Water solubility: 46 ppm at 25 °C.

GHS Hazard Classification

Reported hazard statements	H302, H411

Documented Uses

• Used as selective post-emergence herbicide for control of annual and perennial broad leave weeds in clovers, cereals, grassland, legumes, and groundnuts; [HSDB] Used to control broadleaf weeds in alfalfa, clover, peanuts, soybeans, peppermint, spearmint, and birdsfoot trefoil; [Reference #1]
• Control of broad-leafed plants in row crops; defoliants, general brush control. /Chlorophenoxy compounds; from table/
• Post-emergence control of many annual and perennial broad-leafed weeds in lucerne, clovers, undersown cereals, grassland, forage legumes, soya-beans, and groundnuts.
• Selective, translocated hormone-type herbicide
• Broadleaf herbicide, widely used in agriculture, functions as a synthetic auxin. (L177, L178)
• Information on 2 consumer products that contain 4-(2,4-Dichlorophenoxy)butyric acid in the following categories is provided:

Synonyms

4-(2,4-Dichlorophenoxy)butanoic acid; 94-82-6; 2,4-DB; 2,4-dichlorophenoxybutyric acid; Butyrac; 4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID; Legumex D; Butirex; Butyrac 118; Buratal; Butormone; Butoxon; Butoxone ester; Butyrac ester; Butyrac 200; Sys 67 Buratal

Frequently Asked Questions

What are the CAS number and molecular formula of 4-(2,4-dichlorophenoxy)butyric acid?

CAS 94-82-6; molecular formula C10H10Cl2O3; molecular weight — g/mol.

What other names is 4-(2,4-dichlorophenoxy)butyric acid known by?

4-(2,4-Dichlorophenoxy)butanoic acid, 94-82-6, 2,4-DB, 2,4-dichlorophenoxybutyric acid, Butyrac, 4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID.

Is 4-(2,4-dichlorophenoxy)butyric acid classified as hazardous?

Hazard statements reported: H302, H411.

What are the key physical properties of 4-(2,4-dichlorophenoxy)butyric acid?

Melting Point: 118-120 °C; Vapor Pressure: 0.0000111 [mmHg]; LogP: log Kow= 3.53; LogP: 3.53.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.