Chloroacetyl Chloride

Name: Chloroacetyl Chloride
Brand: Royalchem
Rating: 5.0 (47 reviews)

CAS NO. 79-04-9

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Model:
≥99%
Brand:
Royalchem
Code:
79-04-9

Product Description

Product Name	Chloroacetyl Chloride CAS 79-04-9 \| EC No. 201-171-6 Synonyms: 2-chloroacetyl chloride, monochloroacetyl chloride, chloroacetic acid chloride, CAC
Formula / MW	C₂H₂Cl₂O (ClCH₂COCl) / 112.94
Structure
Product Type	Highly reactive bifunctional acylating agent: the acid chloride installs a chloroacetyl group on amines or alcohols, and the remaining C–Cl can be substituted further. Key intermediate for chloroacetanilide herbicides and several drugs.
Specification	Appearance: colorless to pale yellow clear liquid, pungent odor Assay: ≥ 99% Dichloroacetyl chloride: ≤ 0.8% Boiling point approx. 106 °C; density approx. 1.42 g/mL (literature) Typical values; the batch COA governs.
Applications	Chloroacetanilide herbicides: acylation of substituted anilines to alachlor, acetochlor, butachlor, pretilachlor and metolachlor — the largest use Organophosphate insecticides: dimethoate and omethoate via N-methylchloroacetamide Pharmaceuticals: lidocaine intermediate (with 2,6-dimethylaniline); diclofenac synthesis Fine chemicals: general chloroacetylation reagent
Packing & Storage	Dedicated lined steel drums, IBCs or ISO tanks; pack type per order. Keep tightly sealed under nitrogen, dry, in a cool ventilated dangerous-goods store, away from water, alcohols, bases, amines and oxidizers.

Sourcing chloroacetyl chloride?
Royalchem supplies Chloroacetyl Chloride (CAS 79-04-9), assay ≥99%, dichloroacetyl chloride ≤0.8%, with batch COA, SDS and UN 1752 dangerous-goods documents. Please state your application, packaging and quantity.

FAQ

What is chloroacetyl chloride?	Chloroacetyl Chloride (CAS 79-04-9, ClCH₂COCl, MW 112.94) is a highly reactive acid chloride used to attach a chloroacetyl group to amines and alcohols — a key intermediate for chloroacetanilide herbicides and pharmaceuticals.
Which herbicides are made from it?	The chloroacetanilide family: alachlor, acetochlor, butachlor, pretilachlor and metolachlor, made by acylating the corresponding substituted aniline.
Why is dichloroacetyl chloride controlled?	It is the main by-product of manufacture and carries through acylation as a dichloro impurity in the active ingredient, so it is the key quality limit.
Is chloroacetyl chloride the same as acetyl chloride?	No. Acetyl chloride (CAS 75-36-5) has no chlorine on the methyl group and different uses. Always check the CAS number.