Phenoxy (C6H5O-) herbicides

= 2,4-Dichlorophenoxyacetic acid CAS[94-75-7] UN3077
= Sodium 2,4-dichlorophenoxyacetate
Trade name; 2,4-D (J, I, B); 2,4-PA, Agroxone, Weedone
Chemical formula; C8H6Cl2O3 (free), C8H5Cl2NaO3 (-Na)
Purpose for use; Phenoxy (C6H5O-) herbicide, cell culture (Plant growth regulators).
2,4-D is used in cereals as a pre- and postemergence herbicide for the control of broad-leaf weeds. It is also used to prevent early fruit drop, as a plant growth regulator, and for weed control on roadside verges, around buildings, etc. (ref. ID; 6822)
Toxicity; LD50 (oral): rat [free] 375 mg/kg, [-Na] 666-805 mg/kg.
Test organisms;
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 6096)
Protozoa: Colpidium campylum (ref. ID; 6784)
Rotifera: Brachionus calyciflorus (ref. ID; 121, 127)
Rotifera: Brachionus patulus (ref. ID; 3303)
Rotifera: Brachionus rubens (ref. ID; 818)
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Eisenia fetida andrei (ref. ID; 6822)

= (2,4,5-Trichlorophenoxy)acetic acid CAS[93-76-5] UN3345
Trade name; 2,4,5-T (J, I, B): 2,4,5-T esters, Trioxone, Weedone
Chemical formula; C8H5Cl3O3
Purpose for use; Herbicide.
Toxicity; LD50 (oral): rat 500 mg/kg, mouse 300-1700 mg/kg
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6784)
Rotifera: Brachionus angularis (ref. ID; 1264)
Rotifera: Keratella americana (ref. ID; 1264)
Rotifera: Keratella cochlearis (ref. ID; 1264)
Oligochaeta: Eisenia foetida (ref. ID; 7012)
Oligochaeta: Enchytraeus albidus (ref. ID; 5909)

[2,4,5-T derivatives]
Trietylamine Salt
Trade name; Line Rider Amine 4T, Veon 245

Butyl Ester
Trade name; Line Rider 4T

N-Oleyl-1,3-propylene-diamine Salt
Trade name; Dacamine 4T

Isooctyl Ester
Trade name; Lo-Vol 4T, Lo-Vol 6T

= 4-Chloro-2-methylphenoxy acetic acid CAS[94-74-6]
Trade name; MCPA (J, I, B): Agritox, Agroxone, Cornox-M, MCP
Chemical formula; C9H9ClO3
Purpose for use; Herbicides. It is used against weeds in corn, potatoes, grass, and pastures. (ref. ID; 496)
Toxicity; LD50 (oral): rat 700 mg/kg
Test organisms;
Protozoa: Blepharisma undulans (ref. ID; 496)
Protozoa: Colpidium campylum (ref. ID; 6784)
Protozoa: Colpoda cucullus (ref. ID; 496)
Protozoa: Oikomonas termo (ref. ID; 496)

= 4-(4-Chloro-2-methyl-phenoxy)butyric acid CAS[94-81-5] UN3077
= 4-(4-Chloro-O-tolyoxy)butyric acid
Trade name; MCPB (J, I, B): Tropotox
Chemical formula; C11H13ClO3
Purpose for use; Herbicides.
Test organisms;
Protozoa: Colpidium campylum (ref. ID; 6784)

= (3,4-Dichlorophenoxy)acetic acid
Trade name; 3,4-D
Chemical formula; C8H3Cl2O3

= 2-(2,4-Dichlorophenoxy)ethyl hydrogen sulfate
Trade name; Disul (J, I, B): 2,4-DES, 2,4-PS, sesone, SES
Chemical formula; C8H8Cl2O5S (-H), C8H7Cl2NaO5S (-Na)
Toxicity; LD50 (oral): rat 1230 mg/kg

= 4-(2,4,5-Trichlorophenoxy)butyric acid
Trade name; 2,4,5-TB (I, B)
Chemical formula; C10H9Cl3O3