16672-87-0
Product Name:
Ethephon
Formula:
C2H6ClO3P
Synonyms:
2-Chloroethylphosphonic acid;Ethephon
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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 Ų |
| 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.