75-99-0
Product Name:
2,2-Dichloropropionic acid
Formula:
C3H4Cl2O2
Synonyms:
2,2-Dichloropropionic acid;Dalapon
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | 2,2-dichloropropionic acid appears as a colorless liquid. Soluble in water. Corrosive to metals and tissue. Used as a herbicide. |
|---|---|
| Color/Form | Liquid |
| Odor | Acrid odor. |
| Boiling Point | 374 °F at 760 mmHg (USCG, 1999) |
| Melting Point | 46 °F (USCG, 1999) |
| Solubility | 50 % (NIOSH, 2023) |
| Density | 1.4 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Density | 4.9 (USCG, 1999) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 5.07 mmHg at 160 °F (USCG, 1999) |
| LogP | log Kow= 0.78 |
| Henry's Law Constant | Henry's Law constant= 6.4X10-8 atm-cu m/mole at 25 °C /Estimated/ |
| Stability/Shelf Life | Subject to hydrolysis; slight at 25 °C, but comparatively rapid >/=50 °C; so aqueous solutions should not be kept for any length of time. Alkali causes dehydrochlorination above 120 °C. |
| Decomposition | When heated to decomposition it emits toxic fumes of /hydrgen chloride/. |
| Corrosivity | Corrosive to iron |
| pH | (Aq): 1.32 (0.099 N, 23 °C) |
| Odor Threshold | 2,500 mg/cu m |
| Refractive Index | Index of refraction: 1.4551 @ 20 °C |
| Dissociation Constants | pKa average = 1.74 at 0.001 to 0.1 molarity of the acid and 1.84 at 0.05 ionic strength |
| Other Experimental Properties | Salty taste /Sodium salt/ |
| Chemical Classes | Pesticides -> Herbicides, Other |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. 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 | 142.97 g/mol |
|---|---|
| XLogP3 | 1.3 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 1 |
| Exact Mass | 141.9588348 g/mol |
| Monoisotopic Mass | 141.9588348 g/mol |
| Topological Polar Surface Area | 37.3 Ų |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| Complexity | 88.9 |
| 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
2,2-dichloropropionic acid appears as a colorless liquid. Soluble in water. Corrosive to metals and tissue. Used as a herbicide.