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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 70596Generated: October 27, 2026

Phosphonic dichloride, ethyl-

AURORA KA-1351 · ethyl-phosphonicdichlorid · 1-dichlorophosphorylethane · Ethylphosphonic dichloride · ethyl phosphorus dichloride · ETHANEPHOSPHONIC DICHLORIDE · O-ETHYLPHOSPHONIC DICHLORIDE · Dichloroethylphosphine Oxide

https://huagongshe.com/en/chemical/70596

Phosphonic dichloride, ethyl- molecular structure

Identifiers & Physical Properties

CAS No.1066-50-8
Molecular formulaC2H5Cl2OP
Average molar mass146.94 g/mol
Monoisotopic mass145.9455072 g/mol
SMILESCCP(=O)(Cl)Cl
InChIKeyOWGJXSYVHQEVHS-UHFFFAOYSA-N
PubChem CID70596
EC No.213-918-3
DTXSIDDTXSID70147658

Chemical & Physical Properties

XLogP1.3
Topological polar surface area17.1
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds1
Heavy atoms6
Formal charge0
Complexity75.6
SpringerMaterials PropertiesNuclear quadrupole resonance spectroscopy
Boiling point71-72 °C12 mm Hg(lit.)
Density1.376 g/mL at 25 °C(lit.)
Refractive indexn20/D 1.465(lit.)
Flash point>230 °F
SolubilitySoluble in chloroform and dichloromethane.
Physical stateLiquid
SensitivityMoisture Sensitive
StabilityMoisture Sensitive
CAS DataBase Reference1066-50-8(CAS DataBase Reference)
GHS pictogramGHS05,GHS06
Signal wordDanger
GHS hazard statementsH300-H311+H331-H314
GHS precautionary statementsP261-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard symbolsT
Risk statements (R)23/24/25-34
Safety statements (S)23-26-36/37/39-45
UN transport numberUN 2922 8/PG 2
Water hazard class (WGK)3
RTECS numberTA1780000
Hazard class8
Packing groupII

Safety & Regulations

GHS classificationDangerH300 (90.7%): Fatal if swallowed [Danger Acute toxicity, oral]P260, P261, P262, P264, P270, P271, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P361+P364, P363, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 43 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 1 (90.7%)
Water hazard class (WGK)3
RTECS numberTA1780000
UN transport numberUN 2922 8/PG 2
Risk statements (R)23/24/25-34
Signal wordDanger
GHS pictogramGHS05,GHS06
Hazard symbolsT
Safety statements (S)23-26-36/37/39-45
Hazard class8
Packing groupII
GHS hazard statementsH300-H311+H331-H314
GHS precautionary statementsP261-P270-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338

Applications & Uses

Uses

Ethylphosphonic dichloride finds it uses in the preparation of: ethylphosphonic diisocyanate, 4-acetylphenyl isopropyl ethylphosphonate, 4-acetylphenyl phenyl ethylphosphonate and 4-acetylphenyl cyclohexyl ethylphosphonate.