Atrazine is an odorless white powder used as a selective triazine herbicide.
CAS No.: 1912-24-9
Molecular Formula: C8H14ClN5
Molecular Weight: 215.68
|
Melting point |
175°C |
|
Boiling point |
200°C |
|
Density |
1.187 |
|
Vapor pressure |
0 Pa at 25°C |
|
Refractive index |
1.6110 (estimate) |
|
Flash point |
11°C |
|
Storage temperature |
Keep in a dark place; store under an inert atmosphere; room temperature. |
|
Solubility |
DMSO: 83.33 mg/mL (386.36 mM) |
|
pKa |
1.64 (uncertain) |
|
Form |
Crystalline |
|
Color |
Crystals |
|
Water solubility |
Slightly soluble. 0.007 g/100 mL |
|
Stability |
Stable. Incompatible with strong oxidizing agents. |
Risk and Safety Statements
|
Symbol (GHS) |
|
|
Signal word |
Warning |
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Hazard codes |
Xn; N, N, Xn, T, F, Xi |
|
Hazard class |
9 |
|
Packing group |
III |
|
HS Code |
29336990 |
Atrazine is an odorless white powder and belongs to the selective triazine herbicide family. It is used to suppress the growth of broadleaf and grassy weeds associated with crops including sorghum, maize, sugarcane, lupins, pine, and eucalypt plantations, as well as triazine-tolerant canola.
Based on U.S. statistics for 2014, atrazine ranks as the second most widely used herbicide, after glyphosate. Atrazine works by targeting the weeds’ photosystem II, blocking photosynthesis and leading to weed death. It can be manufactured via treatment of cyanuric chloride with ethylamine and isopropylamine. However, it has been shown to exhibit certain toxicity to humans and other animals by targeting the endocrine system.
Uses
Atrazine is used as a selective herbicide to control broadleaf and grassy weeds in agricultural settings and other non-cropped land. In agriculture, it is applied to corn, sugarcane, and pineapple, and for orchards, sod, tree plantations, and rangeland. Due to its low solubility, atrazine is moderately persistent in the environment. It can be detected in the water table and in the upper layers of the soil profile in many areas (Huang and Frink, 1989). The U.S. Environmental Protection Agency (EPA) reported that atrazine was one of the two most commonly used agricultural herbicides in 2007 (EPA, 2011).