Molekula
Ethyl oxalyl chloride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ethyl oxalyl chloride is a reactive organic compound used in synthetic chemistry, particularly as a reagent for forming esters and amides. It is a colorless to pale yellow liquid with a pungent odor. CAS: 4755-77-5, Molecular formula: C4H5ClO3, Molecular weight: 136.53 g/mol. Store at ambient temperature. Hazard symbol: Danger. Molekula supplies Ethyl oxalyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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100 g — £46.50 per pack ex VAT · £55.80 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Clear pale colourless/ yellow light/ brown liquid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 41 °C |
| Transport Class | 8 (3) |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Vapour Pressure | 7.61 mmHg |
Source: PubChem CID 20884 (Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 53145053 |
| CAS Number | 4755-77-5 |
| IUPAC Name | ethyl 2-chloro-2-oxoacetate |
| EC Number | 225-285-0 |
| Molecular Formula | C4H5ClO3 |
| Molecular Weight | 136.53 |
| Exact Mass | 135.9927 |
| SMILES | CCOC(=O)C(=O)Cl |
| InChIKey | OWZFULPEVHKEKS-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H5ClO3/c1-2-8-4(7)3(5)6/h2H2,1H3 |
| PubChem CID | 20884 |
| UN Number | UN2920 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2917194000 |
| Tariff Code | 2917198090 |
Safety & GHS
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Flammable
GHS02
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- EUH029 Contact with water liberates toxic gas
- H226 Flammable liquid and vapour
- H290 May be corrosive to metals
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P220 Keep/Store away from clothing/combustible materials
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Acetic acid, chlorooxo-, ethyl ester
- Ethoxalyl chloride
- Ethoxyoxalyl Chloride
- Ethyl 2-chloro-2-oxoacetate
- ethyl chloroformylformate
- ETHYL CHLOROGLYOXYLATE
- Ethyl chlorooxoacetate
- ethyl oxalyl monochloride
- Monoethyl oxaloyl chloride
- Oxalic acid monoethyl ester chloride
Frequently asked questions
What is ethyl oxalyl chloride used for?
It is primarily used as a reagent in organic synthesis to introduce the ethoxalyl group, for example in the preparation of oxalate esters, oxamates and aryl glyoxylates.
What is the chemical formula and molecular weight of ethyl oxalyl chloride?
The formula is C4H5ClO3 with a molecular weight of 136.53 g/mol.
How should ethyl oxalyl chloride be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of ethyl oxalyl chloride does Molekula supply?
Molekula supplies ethyl oxalyl chloride in reagent grade.
Can Molekula supply ethyl oxalyl chloride in bulk?
Yes, Molekula can supply ethyl oxalyl chloride in bulk quantities upon request.
What documentation comes with an order of ethyl oxalyl chloride?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.