Amitrole

CAS: 61-82-5

Overview

Amitrole (CAS 61-82-5 ) is a non-selective herbicide used in agriculture to control a broad range of annual and perennial weeds. Sold under trade names including Vorox, Simazol, and Ramizol, it is applied in non-crop and industrial vegetation management contexts.

This chemical is primarily used for weed control on non-agricultural land, including railway corridors, roadsides, and industrial sites where vegetation clearance is a maintenance requirement. It is essential for broad-spectrum weed suppression.

In orchard and vineyard management, it has historically been applied to suppress persistent perennial weeds between rows without soil incorporation. It targets both grasses and broadleaf weeds, making it relevant for pre-clearance programs.

Formulators producing herbicide concentrates source this active ingredient for liquid and soluble formulations designed for professional applicator use. It is highly effective for land preparation ahead of replanting or general site maintenance.

The product is supplied as a technical-grade solid and as a soluble concentrate for formulation purposes. Standard technical purity grades are available for agrochemical manufacturers requiring a defined active substance specification.

Bulk supply is typically offered in powder or crystalline form, with packaging options scaled to industrial and formulation-scale procurement volumes. This ensures consistent quality for large-scale agricultural and industrial applications.

Physical Properties

Melting Point	159 °C
Boiling Point	260 °C
Density	1.138 x 10<sup>-3</sup> g/cm³ @ Temp: 20 °C
Appearance	Amitrole is a colorless to off-white crystalline solid or white powder. Odorless when pure.
Color	White to off-white or yellow
Form	Powder or Flakes
Water Solubility	280 g/L (20 ºC)
Vapor Pressure	<0.1 hPa (20 °C)
Refractive Index	1.6260 (estimate)
pH	6.4-7.4 (100g/l, H2O, 20℃)
Log P	-0.860

Safety & Handling

Warning GHS08 GHS09 GHS07 Hazard Statements H302 Harmful if swallowed H316 Causes mild skin irritation H317 May cause an allergic skin reaction H320 Causes eye irritation H361 Suspected of damaging fertility or the unborn child H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure H411 Toxic to aquatic life with long lasting effects Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29339990
UN Number	3077
ADR Class	9
Packing Group	III
Storage Class	11 - Combustible Solids
WGK (Germany)	2

Other Names

Industries

Agriculture & Feed