High purity Metribuzin with best price and good quality CAS NO.21087-64-9

Product Name:

Metribuzin

Synonyms:

1,2,4-Triazin-5(4H)-one,4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-(9CI);1,2,4-Triazin-5-one, 4-amino-6-tert-butyl-3-(methylthio)-;4-Amino-6-tert-butyl-3-(methylsulfanyl)-1,2,4-triazin-5(4H)-one;4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4h)-on;4-Amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one;4-amino-6-tert-butyl-3-(methylthio)-as-triazin-s(4h)-one;4-Amino-6-tert-butyl-3-methylthio-as-triazin-5-one;4-amino-6-tert-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5-one

CAS:

21087-64-9

MF:

C8H14N4OS

MW:

214.29

Product Categories:

Herbicide;Endocrine Disruptors (Draft)Alphabetic;METI - MZPesticides&Metabolites;Triazinone structure;Alpha sort;Endocrine Disruptors (Draft)Pesticides&Metabolites;EPA;Herbicides;H-MAlphabetic;M;Method Specific;NULL;Pesticides intermediate

Mol File:

21087-64-9.mol

Chemical Properties

melting point 

125°C

boiling point 

312.4 °C at 760 mmHg

density 

1.31 g/cm3

vapor pressure 

0.000531 mmHg at 25°C

Fp 

142.7 °C

storage temp. 

APPROX 4°C

Water Solubility 

Slightly soluble

Usage And Synthesis

Chemical Properties

White Solid

Usage

Metribuzin is an is an aminotriazinone herbicide used in agriculture for both pre- and post-emergence in crops including soy bean, potatoes, tomatoes and sugar cane. Metribuzin acts by inhibiting phot osynthesis by disrupting photosystem II.

General Description

Colorless crystalline solid. Used as an herbicide. Non corrosive.

Reactivity Profile

A triazine derivative. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

Safety Information

Toxicological Effects

Acute toxicity: Metribuzin is slightly toxic via the oral route, with reported oral LD50 values of 1090 to 2300 mg/kg in rats, 700 mg/kg in mice and 245 to 274 mg/kg in guinea pigs. It is practically nontoxic dermally, with a dermal LD50 of 20,000 mg/kg in rabbits. The 4-hour inhalation LC50 for metribuzin in rats is greater than 0.65 mg/L, indicating moderate toxicity via the inhalation route. Metribuzin has been shown not to irritate the skin or eyes of rats, rabbits, guinea pigs, or human volunteers. Effects of high acute exposure in metribuzin poisoned rats included narcosis (stupor) and labored breathing. Deaths occurred within 24 hours, and survivors recovered slowly without permanent effects.

Organ toxicity

In single high dose studies, metribuzin appears to depress the central nervous system. Other studies indicate that the target organs of metribuzin are the thyroid gland and the liver.