English Safety Data Sheet Database 中文版 MSDS

Oxalyl chloride

CAS No. 79-37-8 | PubChem CID 65578
Section 1. Identification
Chemical NameOxalyl chloride CAS No.79-37-8
Synonymsoxalylchloride; ethanedioylchloride Chinese Name乙二酰氯
Molecular FormulaC2Cl2O2 Molecular Weight126.926
UN No.2922 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS02 · Flammable GHS05 · Corrosive GHS06 · Acute Toxic GHS07 · Irritant
Hazard Statements H260H301H314H318H331H335
Precautionary Statements P223P231+P232P260P261P264P264+P265P270P271P280P301+P316P301+P330+P331P302+P335+P334P302+P361+P354P304+P340P305+P354+P338P316P317P319P321P330P363P370+P378P402+P404P403+P233P405P501

Section 2. Hazards Identification

H260 (60%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]

H301 (24.3%): Toxic if swallowed [Danger Acute toxicity, oral]

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

H318 (67.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

H331 (94.7%): Toxic if inhaled [Danger Acute toxicity, inhalation]

H335 (52.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P223, P231+P232, P260, P261, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P335+P334, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P363, P370+P378, P402+P404, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 300 reports by companies from 34 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Section 8. Exposure Controls / Personal Protection

0.77 [ppm]

8.5 [ppm]

51 [ppm]

Section 9. Physical and Chemical Properties

Colorless fuming liquid with a penetrating odor; [Merck Index]

63.5 °C @760 [mm Hg]

1.4785 @ 20°C

150.0 [mmHg]

Schoenflies notation

Chemical bond

Dielectric constant

Internuclear distance

Molecular structure

Nuclear quadrupole resonance spectroscopy

Optical coefficient

Point group

Quadrupole coupling

Refractive index

Toxic Gases & Vapors -> Acid Halides

Section 10. Stability and Reactivity

CSL00032

N,N-DIMETHYLFORMAMIDE + OXALYL CHLORIDE

Health Hazard

Harmful,Toxic

Chlorination

Generation of dimethylcarbamoyl chloride (carcinogen). DMCC is also toxic and a severe irritant.

User-Reported

CSL00079

SODIUM AZIDE + OXALYL CHLORIDE

highly explosive

Explosive

Section 11. Toxicological Information

Dermatotoxin - Skin burns.

Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

LC50 (rat) = 1,840 ppm/1hr

Source: PubChem CID 65578 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 10:05:38.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.