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Methyl oxalyl chloride, 97% - CAS 5781-53-3 - Formula C3H3ClO3

L13258 5781-53-3 Methyl oxalyl chloride, 97% Methyl chloroglyoxylate Alfa Aesar


Certificate of Analysis

Methyl oxalyl chloride, 97%

CAS: 5781-53-3 MDL: MFCD00000705  EINECS: 227-307-4
UN#:UN2920Hazard Class:8Packing Group:II
Alternate Name: Methyl chloroglyoxylate


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
5g 29.80 Check Availability Add to Favorites Enter qty and click checkbox
25g 87.20 Check Availability Add to Favorites Enter qty and click checkbox
100g 252.00 Check Availability Add to Favorites Enter qty and click checkbox

Chemical Properties

Formula: C3H3ClO3  Density: 1.332
Formula weight: 122.51  Refractive Index: 1.4190
Boiling point: 115-118° Sensitivity: Moisture Sensitive
Flash point: 46°(114°F) 

Literature References

A useful synthesis of isocyanates has been described involving oxidation of monoamides of oxalic acid (prepared from methyl oxalyl chloride and a primary amine) with peroxydisulfate catalyzed by Ag and Cu salts: J. Org. Chem., 60, 5430 (1995):

For other examples of reactions of monoesters of oxalyl chloride, see Ethyl­ oxalyl­ chloride, A14653.

Other References

Beilstein: 1071541
UN#: UN2920
Harmonized Tariff Code: 2917.19

GHS Hazard and Precautionary Statements

Hazard Statements : H301-H314-H318-H226

Toxic if swallowed. Causes severe skin burns and eye damage. Causes serious eye damage. Flammable liquid and vapour.

Precautionary Statements : P210-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501A

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.


Risk & Safety

Risk Phrases: 10-14-22-34
Flammable. Reacts violently with water. Harmful if swallowed. Causes burns.
Safety Phrases: 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Harmful Corrosive