Agent Name
CAS Number
Major Category
2,4-D-dimethylammonium formula graphical representation
(2,4-Dichlorophenoxy)acetic acid dimethylamine; (2,4-Dichlorophenoxy)acetic acid dimethylamine salt; 2,4-D DMA; 2,4-D amine; 2,4-D amine salt; 2,4-D dimethylamine; 2,4-D dimethylamine salt; 2,4-D-Dimethylammonium; Acetic acid, (2,4-dichlorophenoxy)-, cmpd with N-methylmethanamine (1:1); Acetic acid, (2,4-dichlorophenoxy)-, cmpd with dimethylamine (1:1); Amicide; Aminol; Aminol (herbicide); Aminopielek 720; Aminopielik 600SL; Aminoprelik 39; Amisol; Banvel 3 Liquid Herbicide; Banvel-720; Barber's Weed Killer (Amine Formulation); Best 4 Servis Brand Lawn Weed Killer; Bladex G; Blitz 64; Brabant 2,4-D amine; Chipman 2,4-D Amine No. 4; Chipman Lawn Weedkiller; Chipman Mecoprop + 2,4-D Weedkiller Liquid; Clean Crop 2,4-D Amine 500; Co-op Premium Lawn Weed Killer; D 50 (pesticide); DMA 4; DMA 4 (pesticide); DMA 6; Ded-Weed Sulv; Demise; Desormone; Diamond Shamrock Amine 6D; Dikamin D; Dimethylamine, (2,4-dichlorophenoxy)acetate; Dimethylammonium 2,4-dichlorophenoxyacetate; Dma-4; Dow DMA-4; Du Pont Lawn Weed Killer; Du Pont Turf Food With Weed Killer; Du Pont Weed Killer No. 2; FS Amine 400 Weed Killer; Farmco D 50; Floro Tox 2,4-D Amine Weed Killer; Formula 40; Green Cross Killex Spot Weeder Pressurized Spray; Green Cross Poison Ivy Killer; Herbitex; Hormin; Liquid Clearit Vegetation Killer; Liquid Wonder Weeder; Manco Kill-Weed; Marquette Herbitex Plus; Mecoturf Plus 2,4-D Liquid Weedkiller; Methanamine, N-methyl-, (2,4-dichlorophenoxy)acetate; Monosan; Monsanto 2,4-D Amine; Morselect; Norkem 40t; Ortho Super Weed-B-Gon Spray; Pacific Cooperatives P 2,4-D Amine Weed Killer; Parsons 2,4-D Weed Killer; Parsons 2,4-D Weed Killer No. 40; Phordene; Reed amine 400; Shirweed 500; Spraygraze; Spritz-Hormin; Sure Death 2,4-D Amine Weedkiller; Techne 2,4-D Amine Weed Killer; U 46D Fluid; U-46 D-Fluid; Vigoro Dandelions Killer; Weed-Rhap A-4D; Weedar 64; Weedar 96; Wilbur-Ellis 2,4-D Amine 500; Wilson's Multi-Weeder; Zehrung 2,4-D Selective Amine Weed Killer; [ChemIDplus] UN2810
Herbicides, Chlorophenoxy
White crystals; [HSDB] Available as a brown liquid, a solution in 2,4-dichlorophenoxyacetic acid; [CAMEO] Solid; [Aldrich MSDS] Aqueous amber liquid; [Reference #1]
Used as a herbicide for crops and turf; [HSDB]
A skin and eye irritant; Single oral doses 100-150 mg/kg in pregnant rats have produced teratogenic effects; [HSDB] A skin sensitizer; [Quick CPC] The acid form (2,4-D) is used as representative of the salts and esters due to close similarities in relative toxicities; A severe eye irritant; [Reference #1] Causes other hemolysis with or without anemia and changes in other blood cell count in acute toxic-dose studies of rats; Causes hypoglycemia, pigmented or nucleated red blood cells, and changes in blood serum composition, other tranferases, catalases, other proteins, and thyroid weight in repeated dose studies of rats; [RTECS] May cause irritation; Harmful by ingestion; [Aldrich MSDS] See "2,4D."
Reference Link #1
Biomedical References

Exposure Assessment

Vapor Pressure
1E-09 mm Hg
Lethal Concentration
LC50 (rat) > 3,500 mg/m3
Explanatory Notes
Flash point > 191 deg F; [CAMEO]

Adverse Effects

Skin Sensitizer
IARC Carcinogen
Possible (2b)
ACGIH Carcinogen
Not Classifiable

Diseases, Processes, and Activities Linked to This Agent


Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: