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Synonyms: 3-(2-chloro-1,3-thiazol-5-ylmethyl)-5-methyl-1,3,5-oxadiazinan-4-ylidene(nitro)amine (IUPAC)

CAS No.: 153719-23-4
EC No.: 428-650-4
Molecular Weight: 291.7
Molecular Formula: C8H10ClN5O3S
Structural Formula: Thiamethoxam
Form: Crystalline powder.
M.p. 139.1 °C
V.p. 6.6 × 10-6 mPa (25 °C)
S.g: 1.57 (20 °C)
Solubility In water 4.1 g/l (25 °C). In acetone 48, ethyl acetate 7.0, dichloromethane 110, toluene 0.680 (all in g/l).
Stability Stable at pH 5; DT50 640 d (pH 7), 8.4 d (pH 9) (unstated temperature) (EU Rev. Rep.).


Thiamethoxam is an agonist of the nicotinic acetylcholine receptor, affecting the synapses in the insect central nervous system. Mode of action Insecticide with contact, stomach and systemic activity. Easily taken up into the plant and transported acropetally in the xylem. Used to control aphids, whiteflies, thrips, ricehoppers, ricebugs, mealybugs, white grubs, Colorado potato beetle, flea beetles, wireworms, ground beetles, leaf miners and some lepidopterous species, at application rates. Also for control of flies (such as Musca domestica, Fannia canicularis and Drosophila spp.) in animal and public health.



Standard Packaging


Packaging photos coming soon

Risks and Safety Information

Toxic, Class 6.1
Acute oral LD50(rats) 1563mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000mg/kg. Non-irritating to skin and eyes (rabbits). Not a skin sensitiser (guinea pigs). Birds Acute oral LD50(bobwhite quail) 1552. Dietary LC50(bobwhite quail) >5200mg/kg. Fish LC50 (96h for rainbow trout) >100. Algae EC50 (96h for green algae) >100 mg/l. Bees LD50 for honeybees (oral) 0.005 μg/bee; (contact) 0.024 μg/bee.

Warning, Toxic

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