Triazine-ring herbicides

[Atrazine] CAS[1912-24-9]

= 2-Chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine, = 2-Chloro-4-ethylamino-6-isopropylamino-1,3,5-triazixine, = 2-Chloro-4-(ethylamino)-6-(iso-propylamino)-s-triazine (ref. ID; 4554)

Trade name

Atrazine (J, I, A, B): Aatrex, Gesaprim, Primatol-A, Vectol

Chemical formula

C8H14ClN5

Purpose for use

Triazine-ring herbicide.
Atrazine is one of the most used pesticides in the world, but banned from agriculture in Germany since 1992. Atrazine moreover is suspected to cause endocrine disruption. (ref. ID; 6707)

Toxicity

LD50 (oral): rat 3080 mg/kg, mouse 1750 mg/kg.

Test organisms

Green algae (formerly including protozoa): Chlamydomonas reinhaditii (ref. ID; 1319, 4553, 4565)
Protozoa: Acanthamoeba castellanii (ref. ID; 946)
Protozoa: Euglena gracilis (ref. ID; 4554, 4560, 4562)
Protozoa: Tetrahymena pyriformis (ref. ID; 1319, 3554)
Oligochaeta: Enchytraeus albidus (ref. ID; 6754)
Oligochaeta: Lumbriculus variegatus (ref. ID; 6707)
Oligochaeta: Midden formed by Lumbricus terrestris (ref. ID; 6894)
Aquatic microcosm (ref. ID; 3588, 6752, 6828)

[Primextra: Atrazine-metolachlor liquid formulation]

Trade name

Primextra

Test organisms

Oligochaeta: Lumbricus terrestris (ref. ID; 4498)

[Prometryn] CAS[7287-19-6]

= 2,4-Bis(isopropylamino)-6-methylthio-1,3,5-triazixine

Trade name

Prometryn (J, I, A, B): Caparol, Gesagard, Primatol-Q, prometryne

Chemical formula

C10H19N5S

Purpose for use

Herbicide. A selective systemic methylthiotriazine herbicide. (ref. ID; 6701)

Toxicity

LD50 (oral): rat 3150-3750 mg/kg.

Test organisms

Aquatic microcosm (ref. ID; 6701)

[Simazine] CAS[122-34-9]

= 2-Chloro-4,6-bis(ethylamino)-1,3,5-triazixine

Trade name

Simazine (J, I, A, B): CAT, Gesatop, Primatol-S, Princep

Chemical formula

C7H12ClN5 (R=C2H5)

Purpose for use

Herbicide.

Toxicity

LD50 (oral): rat>5000 mg/kg.

Test organisms

Protozoa: Acanthamoeba castellanii (ref. ID; 946)

[Simetryn] CAS[1014-70-6]

= 2,4-Bis(ethylamino)-6-methylthio-1,3,5-triazixine

Trade name

Simetryn (J, I, B): Gy-bon, simetryne

Chemical formula

C8H15N2S

Purpose for use

Herbicide.

Toxicity

LD50 (oral): rat 750 mg/kg, mouse 535 mg/kg.