Crystallise 2,4-D from MeOH. It is a plant growth substance, a herbicide and is TOXIC. [Beilstein 6 IV 908.]
As one of the most inexpensive and oldest weed killers, 2,4-Dichlorophenoxyacetic acid (usually called 2,4-D) is a systemic herbicide that is widely applied all over the world. It is effective to selectively kill a variety of terrestrial and aquatic broadleaf weeds without affecting most grasses, such as cereals, lawn turf, and grassland. Nowadays, 2,4-D is widely used to treat unwanted vegetation in various areas. In the field of forestry, it is used for stump treatment, trunk injection, selective control of brush in conifer forests and used to kill weeds and brush along roadways, railways, and power lines which probably damage equipment or interfere with safe operation. Besides, it is applied to control aquatic weeds for the safety of boating, fishing and swimming or protection of hydroelectric equipment. It is also used to control the spread of invasive, noxious and non-native weed species by government and control various poisonous weeds such as poison ivy and poison oak. In addiction to the forestry use, 2,4-D can also be used as a supplement in plant cell culture media in laboratories as a dedifferentiation hormone.
ChEBI: A chlorophenoxyacetic acid that is phenoxyacetic acid in which the ring hydrogens at postions 2 and 4 are substituted by chlorines.
Special Hazards of Combustion Products: Toxic and irritating hydrogen chloride or phosgene gases may form.
Herbicide. Used to increase latex output of old rubber trees
light yellow crystalline powder
Dust may irritate eyes. Ingestion causes gastroentric distress, diarrhea, mild central nervous system depression, dysphagia, and possible transient liver and kidney injury.
2,4-Dichlorophenoxyacetic acid is incompatible with strong oxidizers. 2,4-Dichlorophenoxyacetic acid is corrosive to metals.
Odorless white to tan solid. Sinks in water.
ACME® 2,4-D; AGROCER COMPLEX®; AGROTECT®; AMIDOX®; AMINOL 806®; AMINOZ®; AMOXONE®; AQUA-KLEEN®; BARRAGE®; BH 2,4-D®; BRUSH-RHAP®, active;[C]; BUSH KILLER®; B-SELEKTONON®; CAMPAIGN®; CHIPCO TURF HERBICIDE “D”®; CHLOROXONE®; CITRUS FIX; CROP RIDER®[C]; CROTILIN®; CURTAIL®; D 50®; 2,4-D PHENOXY PESTICIDE®; DACAMID®; DACAMINE®[C]; DECAMINE®; DEBROUSSAILLANT 600®; DEDWEED®; DEHERBAN®; DESORMONE® 2,4-D; DICOPUR®; DICOTOX®; DIKAMIN®; DIKONIRT®; DMA-4®; DORMONE®; DYMEC®; EMULSAMINE BK®[C]; EMULSAMINE E-3®[C]; ENVERT®[C]; ESTERON®; ESTERON BRUSH KILLER®; ESTERON 99 CONCENTRATE®; ESTERONE FOUR®, ESTERON 44 WEED KILLER®; ESTONE®; FARMCO®[C]; FERNESTA®; FERNIMINE®; FERNOXONE®; FERXONE®; FOREDEX 75®; FORMULA 40®; HEDONAL®; HERBANIL®; HERBI D-480®; HERBIDAL®; HERBOXONE®; HI-DEP®; HORMOTOX®; IPANER®; KROTILINE®; LAND MASTER®; LAWN-KEEP®; MACRONDRAY®; MALERBANE®; MATON®; MIRACLE®[C]; MONOSAN®; MOTA MASKROS®; MOXONE®; NETAGRONE®; PENNAMINE®[C]; PHENOX®; PIELIK®; PLANOTOX®; PLANTGARD®; RHODIA®; SALVO®[C]; SAVAGE®; SPRITZHORMIN/2,4-D®; SPRITZ-HORMIT/2,4-D®; SUPER D WEEDONE®; SUPERORMONE CONCENTRE®; TRANSAMINE®[C]; TRIBUTON®; TRINOXOL®[C]; U 46® 2,4-D; U-5043®; VERGEMASTER®; VERTON®[C]; VIDON 638®; VISKO®[C]; VISKORHAP®[C]; WEED-AG-BAR®; WEEDAR®; WEEDB-GON®; WEEDEZ WONDER BAR®; WEEDONE®; WEED-RHAP®[C]; WEED TOX®; WEEDTROL®
Air & Water Reactions
Decomposes rapidly in water.
Herbicide, Plant growth regulator: 2,4-Dichlorophenoxyacetic acid was introduced as a plant growth-regulator in 1942. 2, 4-D is the most widely used herbicide in the United States and its used in more than 100 countries. It is registered in the United States as a herbicide for control of broadleaf plants and as a plant growth-regulator. There are many forms or derivatives of 2,4-D including esters, amines, and salts. It is used in cultivated agriculture, in pasture and rangeland applications, forest management, home, garden, and to control aquatic vegetation. It may be found in emulsion form, in aqueous solutions (salts), and as a dry compound. The product Agent Orange, made by Monsanto Chemical and used extensively throughout Vietnam, was about 50% 2,4-D. However, the controversies associated with the use of Agent Orange involved a contaminant (dioxin) in the 2,4,5-T component of the defoliant. In 1964 Agent Orange replaced Agent Purple a mixture of the n-butyl esters of 2,4-D and 2,4,5-T plus the isobutyl ester of 2,4,5-T.