Chlorpyrifos

Name: Chlorpyrifos
Brand: Vaqora Chemicals
SKU: VQ-032711

About Chlorpyrifos

Chlorpyrifos (CAS 2921-88-2) is a high-purity reference standard of Chlorpyrifos offered by Vaqora Chemicals. With the molecular formula C9H11Cl3NO3PS, it has a molar mass of 350.6 g/mol. The IUPAC name is diethoxy-sulfanylidene-[(3,5,6-trichloro-2-pyridinyl)oxy]-lambda5-phosphane. It is also known as Chlorpyrifos-ethyl or Piridane.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Laboratories use this Chlorpyrifos standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material
Agrochemical formulations

Industries

Related to Chlorpyrifos

View every impurity, metabolite and intermediate we list for Chlorpyrifos.

Chlorpyrifos impurities

Specifications & identifiers

Chemical identifiers
Product name	Chlorpyrifos
Catalogue No.	VQ-032711
CAS Number	2921-88-2
IUPAC name	diethoxy-sulfanylidene-[(3,5,6-trichloro-2-pyridinyl)oxy]-lambda5-phosphane
Molecular formula	C₉H₁₁Cl₃NO₃PS
Molecular weight	350.6 g/mol
Exact mass	348.9263
Grade	Reference Standard
HSN code	38229090
InChIKey	SBPBAQFWLVIOKP-UHFFFAOYSA-N
SMILES	CCOP(=S)(OCC)OC1=NC(=C(C=C1Cl)Cl)Cl
PubChem CID	2730

Physical properties
Physical form	Solid
LogP (XLogP3)	5.3
H-bond donors / acceptors	0 / 5
TPSA	72.7 Å²
Synonyms	Chlorpyrifos-ethyl, Piridane, Dowco 179, Chlorpyrifos ethyl, Lock-On, Terial, Suscon green, Suscon blue, Dursban F, Dursban R, Phosphorothioic acid, O,O-diethyl O-(3,5,6-trichloro-2-pyridinyl) ester, Dursban 4E

Safety & hazard information (GHS)

Toxic

Environmental hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P264, P270, P273, P301 + P316, P321, P330, P391, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Chlorpyrifos?

The CAS Registry Number of Chlorpyrifos is 2921-88-2. It is also known as Chlorpyrifos-ethyl, Piridane, Dowco 179.

What is the molecular formula and molecular weight of Chlorpyrifos?

Chlorpyrifos has the molecular formula C9H11Cl3NO3PS and a molecular weight of 350.6 g/mol. Its IUPAC name is diethoxy-sulfanylidene-[(3,5,6-trichloro-2-pyridinyl)oxy]-lambda5-phosphane.

What is Chlorpyrifos used for?

Chlorpyrifos is supplied as a characterised reference material related to Chlorpyrifos. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Chlorpyrifos can I order?

We supply Chlorpyrifos in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Chlorpyrifos?

Yes. Every lot of Chlorpyrifos is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Chlorpyrifos be shipped internationally?

Yes. Chlorpyrifos is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.