33379 Supelco


PESTANAL®, analytical standard

Synonym: 2-Chloro-N-ethoxymethyl-N-(2′-ethyl-6′-methylphenyl) acetamide

  • CAS Number 34256-82-1

  • Empirical Formula (Hill Notation) C14H20ClNO2

  • Molecular Weight 269.77

  •  Beilstein/REAXYS Number 2859702

  •  EC Number 251-899-3

  •  MDL number MFCD00143534

  •  PubChem Substance ID 329754507

  •  NACRES NA.24



Related Categories 2000/60/EC, A-B, A-D, Additional Standards, All Herbicide Standards,
Quality Level   100
grade   analytical standard
product line   PESTANAL®
form   neat
shelf life   limited shelf life, expiry date on the label
application(s)   HPLC: suitable
  gas chromatography (GC): suitable
Featured Industry   Agriculture
format   neat
storage temp.   room temp
SMILES string   CCOCN(C(=O)CCl)c1c(C)cccc1CC
InChI   1S/C14H20ClNO2/c1-4-12-8-6-7-11(3)14(12)16(10-18-5-2)13(17)9-15/h6-8H,4-5,9-10H2,1-3H3


General description

Acetochlor is a chloroacetanilide herbicide effective against soil bacteria. This selective pre-emergence herbicide inhibits the elongation of C18 and C16 fatty acids species to form very long-chain fatty acids (VLCFAs). It is commonly used for weed control management and yellow nutsedge in corn plantation.


Acetochlor may be used as a reference standard to deternine acetochlor in water and soil samples using high-performance liquid chromatography and reversed-phase liquid chromatography coupled with electrospray ionization mass spectrometry, respectivley.

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Legal Information

PESTANAL is a registered trademark of Sigma-Aldrich International GmbH

Safety & Documentation

Safety Information

Signal word 
Target organs 
Kidney, Respiratory system
UN 3082 9 / PGIII
WGK Germany 


Certificate of Analysis (COA)

Please Enter a Lot Number

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
The MSDS for Product 333379, Potassium ethoxide, says it needs to be handled and stored under an inert gas. However, there isn't a glove box on site. How could we handle the product?
Since the product is air and moisture sensitive, we would recommend using one of our Atmosbags as a cost-effective way to handle the product under argon or nitrogen.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What is the density of Acetochlor, Product 33379?
Pure Acetochlor (Product 33379)is a neat liquid, with a density of 1.084 g/mL at 20°C.
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Protocols & Articles


GC Analysis of 'Positive List' Chemicals (Mix 4) on SLB®-5ms

From our library of Articles, Sigma-Aldrich presents GC Analysis of 'Positive List' Chemicals (Mix 4) on SLB®-5ms
Keywords: Chromatography, Gas chromatography, Herbicides, Pesticides, Purification

Peer-Reviewed Papers


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