2-氯乙基磷酸

Description

2-Chloroethyl phosphoric acid · CAS 16672-87-0 · C2H6ClO3P. UNII XU5R5VQ87S. Boiling Point: 265 °C (decomposes); Melting Point: 74-75 °C; Density: 1.2 g/cu cm.

Identification

CAS Registry Number	16672-87-0
PubChem CID	27982
Molecular formula	C2H6ClO3P
IUPAC name	2-chloroethylphosphonic acid
UNII (FDA)	XU5R5VQ87S

Computed Descriptors

Molecular Weight	144.49
XLogP3	-1
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Exact Mass	143.9743087
Monoisotopic Mass	143.9743087
Topological Polar Surface Area	57.5
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	265 °C (decomposes)
Melting Point	74-75 °C
Density	1.2 g/cu cm
Vapor Pressure	0.0000001 [mmHg]
Vapor Pressure	< 7.5X10-8 mm Hg at 20 °C
LogP	log Kow = -0.22

Physical description & handling notes

• Very hygroscopic solid; [Merck Index] Light beige powder; [MSDSonline]
• Needles from benzene
• White waxy solid
• White crystalline powder
• Freely soluble in ethylene glycol, propylene glycol; practically insoluble in petroleum ether
• VERY SLIGHTLY SOL IN AROMATIC SOLVENTS; VERY SOL IN ALCOHOL

GHS Hazard Classification

Reported hazard statements	H302, H311, H314, H332, H411, H312 (32.3%), H318 (66.2%), H412 (32.3%)

Documented Uses

• Used as plant growth regulator to promote ripening in fruits, nuts, and other crops and to stimulate latex flow in rubber; [HSDB] Used primarily on cotton; [Reference #1]
• A plant-growth regulator that increases rate of ripening of plants by promoting release of ethylene, stimulates rubber latex formation; ripening of sugarcane; flowering agent for pineapple; color enhancer.
• In cotton, it is used as a boll opener and defoliant prior to harvesting.
• Ethephon is used to promote fruit ripening, abscission, flower induction, breaking of apical dominance (inhibition of the growth of lateral buds by the terminal bud of a shoot), and other plant responses.
• CLEAVAGE OF THE BIS(2-CHLOROETHYL) ESTER OF 2-CHLOROETHYL PHOSPHONIC ACID
• Ethephon is made from tris(2-chloroethyl) phosphite by rearrangement to bis(2-chloroethyl)2-chloroethyl phosphonate followed by hydrolysis

Synonyms

ETHEPHON; 16672-87-0; 2-Chloroethylphosphonic acid; (2-Chloroethyl)phosphonic acid; Ethrel; Bromeflor; Camposan; Cerone; 2-Cepa; Ethefon; Etheverse; Flordimex; Kamposan; Tomathrel; Cepha; Ethel

Frequently Asked Questions

What are the CAS number and molecular formula of 2-Chloroethyl phosphoric acid?

CAS 16672-87-0; molecular formula C2H6ClO3P; molecular weight — g/mol.

What other names is 2-Chloroethyl phosphoric acid known by?

ETHEPHON, 16672-87-0, 2-Chloroethylphosphonic acid, (2-Chloroethyl)phosphonic acid, Ethrel, Bromeflor.

Is 2-Chloroethyl phosphoric acid classified as hazardous?

Hazard statements reported: H302, H311, H314, H332, H411.

What are the key physical properties of 2-Chloroethyl phosphoric acid?

Boiling Point: 265 °C (decomposes); Melting Point: 74-75 °C; Density: 1.2 g/cu cm; Vapor Pressure: 0.0000001 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.