16672-87-0

Product Name: Ethephon

Formula: C2H6ClO3P

Synonyms: 2-Chloroethylphosphonic acid;Ethephon

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CHEMICAL AND PHYSICAL PROPERTIES SAFETY INFORMATION COMPUTED DESCRIPTORS PRODUCT INTRODUCTION RELATED SUPPLIERS

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	Very hygroscopic solid; [Merck Index] Light beige powder; [MSDSonline]
Color/Form	Needles from benzene
Boiling Point	265 °C (decomposes)
Melting Point	74-75 °C
Solubility	Freely soluble in ethylene glycol, propylene glycol; practically insoluble in petroleum ether
Density	1.2 g/cu cm
Vapor Pressure	0.0000001 [mmHg]
LogP	log Kow = -0.22
Stability/Shelf Life	Aqueous soln are stable below pH 3.5. Above pH 3.5 hydrolysis begins with the release of free ethylene.
Decomposition	Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, and hydrogen chloride. Reaction to alkaline materials causes evolution of ethylene gas. /Boll Buster/
Dissociation Constants	Dissociation Constants: pKa1 = 2.5; pKa2 = 7.2 (diprotic acid)
Other Experimental Properties	Spray formulations are quite acidic, about pH 1.0. May be irritating to exposed skin and eyes, or if inhaled.
Chemical Classes	Pesticides -> Plant Growth Regulators

SAFETY INFORMATION

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06 Environment GHS09
GHS Hazard Statements	H311:Acute toxicity,dermal H314:Skin corrosion/irritation H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight	144.49 g/mol
XLogP3	-1
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Exact Mass	143.9743087 g/mol
Monoisotopic Mass	143.9743087 g/mol
Topological Polar Surface Area	57.5 Å²
Heavy Atom Count	7
Formal Charge	0
Complexity	86.9
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently-Bonded Unit Count	1
Compound Is Canonicalized	Yes

PRODUCT INTRODUCTION

description

(2-chloroethyl)phosphonic acid is a phosphonic acid compound having a 2-chloroethyl substituent attached to the P-atom. It has a role as a plant growth regulator.