Fenazaquin

CAS NO.：120928-09-8
Empirical Formula: C20H22N2O
Molecular Weight: 306.4
MDL number: MFCD01656049
EINECS: 410-580-0
SAFETY DATA SHEET (SDS)
Update Date: 2025-08-21 22:16:43

What is Fenazaquin?

The Uses of Fenazaquin

Fenazaquin is a non-systemic acaricide/insecticide used widely in controlling mites and other related pests in fruits, vegetables and tea.

The Uses of Fenazaquin

Acaricide and insecticide.

The Uses of Fenazaquin

Fenazaquin is an acaricide mainly used for control of mites (Eutetranychus, Panonychus and Tetranychus spp.) on pome and citrus fruits and glasshouse-grown ornamental plants.

What are the applications of Application

Fenazaquin is a non-systemic acaricide/insecticide

Definition

ChEBI: Fenazaquin is a member of quinazolines. It has a role as an acaricide and a mitochondrial NADH:ubiquinone reductase inhibitor.

Metabolic pathway

Fenazaquin is a lipophilic compound and hence is immobile in soils and is not translocated in plants. The main pathways of metabolism involve cleavage of the bridging group between the quinazoline and phenyl rings, oxidation of the tert-butyl sustituent and of the heterocyclic portion of the quinazoline ring and cleavage of that ring. Most of the information is taken from a pamphlet produced by the manufacturer of the compound in which full experimental details were not given (DowElanco, 1993).

Degradation

Fenazaquin is hydrolysed under acidic conditions but the rate is slow under neutral and alkaline conditions. Half-lives were 8,442 and 584 days (22 °C) at pH values of 5, 7 and 9, respectively. Hydrolysis occurs by cleavage of the ether linkage to form quinazolin-2-ol (2) and an alcohol (3) as shown in Scheme 1. The major route of degradation in aquatic environments is by photolysis, the main products (2 and 3) being formed by cleavage of the ether lmkage and include the alkene (4) (DowElanco, 1993).

Properties of Fenazaquin

Melting point:	70-71° (Dreikorn); mp 77.5-80.0° (Gambie)
Boiling point:	447.01°C (rough estimate)
Density	1.0970 (rough estimate)
vapor pressure	3.4 x l0^-6 Pa (25 °C)
refractive index	1.5700 (estimate)
storage temp.	Sealed in dry,Room Temperature
solubility	Chloroform (Slightly), Ethyl Acetate (Slightly)
pka	2.88±0.30(Predicted)
form	neat
Water Solubility	0.102 mg l^-1 (20 °C, pH 7)
BRN	8331263
CAS DataBase Reference	120928-09-8(CAS DataBase Reference)
EPA Substance Registry System	Fenazaquin (120928-09-8)

Safety information for Fenazaquin

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06 Environment GHS09
GHS Hazard Statements	H301:Acute toxicity,oral H332:Acute toxicity,inhalation H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.