Description

Dowco159 is a high-purity organophosphorus compound widely recognized for its efficacy as an acaricide and insecticide intermediate. It delivers consistent biological activity and synthetic versatility, making it essential for manufacturers requiring reliable performance in pesticide formulation and process chemistry. Dowco159 CAS NO 2213-84-5 is primarily utilized by agrochemical producers, contract research organizations (CROs), and fine chemical suppliers engaged in the development and scale-up of crop protection agents.

Application

• Acaricidal active ingredient in commercial miticide formulations for fruit orchards and vineyards
• Key synthetic intermediate in the production of phosphorothioate-based insecticides (e.g., analogues of parathion and fenitrothion)
• Building block for chiral organophosphate derivatives used in selective pest control research
• Reagent in catalytic phosphorylation reactions for pharmaceutical API synthesis
• Stabilizer additive in specialty polymer systems requiring flame-retardant phosphorus content
• Reference standard in GC-MS and HPLC method validation for residue analysis in food safety laboratories

Basic Information

Product Name	Dowco159
CAS No.	2213-84-5
Molecular Formula	C10H15O3PS
Molecular Weight	246.27 g/mol
Synonyms	O,O-Diethyl O-(4-nitrophenyl) phosphorothioate; Fenitrothion impurity A; 4-Nitrophenyl diethyl phosphorothioate; Diethyl 4-nitrophenyl phosphorothioate; NSC 14492; UNII-831N1Q7W7F; BRN 2805549; EPA Pesticide Chemical Code 085701
EINECS	218-647-2

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to ISO 9001-certified manufacturing protocols and meet specifications aligned with ACS Reagent Grade and EP/USP general chapters on organophosphorus compounds. Testing includes identity confirmation, assay, heavy metals, residual solvents, and spectral purity verification.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15–25°C) in a dry, well-ventilated area. Keep away from strong oxidizing agents, fluorides, and strong alkalis. Avoid exposure to moisture and direct sunlight due to inherent light sensitivity and potential hydrolytic degradation.

Specification

Item	Specification
Appearance	Pale yellow to amber liquid or crystalline solid
Assay (by HPLC)	≥ 98.5%
Identification (IR)	Conforms to reference spectrum
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Water Content (Karl Fischer)	≤ 0.2%
Related Substances (HPLC)	Single impurity ≤ 0.3%; Total impurities ≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.