8.07066 EMD Millipore

Oxalyl chloride

Oxalyl chloride for synthesis. CAS 79-37-8, EC Number 201-200-2, chemical formula ClCOCOCl., for synthesis

Synonym: Oxalic acid dichloride

  • CAS Number 79-37-8

  • Linear Formula C₂Cl₂O₂

  • Molecular Weight 126.92 g/mol

  •  EC Number 201-200-2



Related Categories Biochemicals and Reagents More...
packaging   100 ml in Glass bottle (8070660100)
  25 ml in Glass btl. pl.coat. (8070660025)
  500 ml in Glass bottle (8070660500)
bp   63 - 64 °C (1013 hPa)
vapor pressure   200 hPa (20 °C)
density   1.48 g/cm3 (20 °C)
flash point   >100 °C
mp   -12 °C
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (argentometric): ≥ 98.0 %
  Identity (IR): passes test
  A slight precipitate of oxalic acid is normal and does not affect the specified quality of the product.

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Safety Information

HS Code 
2917 19 80
Hazard Statement(s) 
H260: In contact with water releases flammable gases which may ignite spontaneously.
H314: Causes severe skin burns and eye damage.
H331: Toxic if inhaled.
H335: May cause respiratory irritation.
EUH014: Reacts violently with water.
EUH029: Contact with water liberates toxic gas.
Precautionary Statement(s) 
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
P402 + P404: Store in a dry place. Store in a closed container.
Storage class 
4.3 Hazardous materials, which set free flammable gases upon contact with water
WGK 1 slightly water endangering
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS06  GHS06
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Flammable  Flammable
Hazard Symbols 
Toxic  Toxic
Declaration (railroad and road) ADR, RID 
UN 3129 , 4.3 (8), I
Declaration (transport by air) IATA-DGR 
UN 3129 , 4.3 (8), I
Declaration (transport by sea) IMDG-Code 
UN 3129 , 4.3 (8), I, Segregation Group: 1 (Acids)
Categories of danger 
toxic, corrosive
R Phrase 
R 14/15-23-29-34-37
Reacts violently with water, liberating extremely flammable gases.Toxic by inhalation.Contact with water liberates toxic gas.Causes burns.Irritating to respiratory system.
S Phrase 
S 7/8-26-36/37/39-43-45
Keep container tightly closed and dry.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 fire, use metal-fire powder. Never use water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
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