Silvex solution , Analysis standard , 93-72-1
Synonym(s):
2-(2,4,5-Trichlorophenoxy)propionic acid;2-(2,4,5-Trichlorophenoxy)propionic acid solution;2,4,5-TP;Fenoprop;Silvex
CAS NO.：93-72-1
Empirical Formula: C9H7Cl3O3
Molecular Weight: 269.51
MDL number: MFCD00002646
EINECS: 202-271-2
PRODUCT Properties
| Melting point: | 175-180 °C |
| Boiling point: | 378.87°C (rough estimate) |
| Density | 1.5288 (rough estimate) |
| refractive index | 1.4900 (estimate) |
| Flash point: | 11 °C |
| storage temp. | 0-6°C |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| pka | 2.93±0.10(Predicted) |
| Water Solubility | 71mg/L(25 ºC) |
| Merck | 13,8606 |
| BRN | 1985768 |
| Henry's Law Constant | 3.9×104 mol/(m3Pa) at 25℃, Mackay et al. (2006) |
| Stability: | Stablr. Incompatible with strong bases, strong oxidizing agents. |
| Major Application | agriculture environmental |
| InChI | 1S/C9H7Cl3O3/c1-4(9(13)14)15-8-3-6(11)5(10)2-7(8)12/h2-4H,1H3,(H,13,14) |
| InChIKey | ZLSWBLPERHFHIS-UHFFFAOYSA-N |
| SMILES | CC(Oc1cc(Cl)c(Cl)cc1Cl)C(O)=O |
| CAS DataBase Reference | 93-72-1(CAS DataBase Reference) |
| EPA Substance Registry System | Silvex (93-72-1) |
Description and Uses
Fenoprop is an obsolete phenoxypropionic herbicide and synthetic auxin. It is moderately soluble in water and has a low volatility. It tends not to be persistent in soils and, based on its physico-chemical properties, it is not expected to leach to groundwater. Very little data is available regarding its toxicity to biodiversity but it is considered to have a low toxicity to birds but moderate to fish and aquatic invertebrates. Fenoprop is moderately toxic to humans via the oral route. No information on possible chronic effects is available.
Silvex was formerly used as a herbicide. Itsuse in rice fields, sugarcane, and orchards hasbeen stopped by the EPA.
Safety
| Symbol(GHS) |   GHS07,GHS09 |
| Signal word | Warning |
| Hazard statements | H302-H315-H410 |
| Precautionary statements | P264-P270-P280-P273-P301+P312-P330-P302+P352-P332+P313-P362+P364-P391-P501 |
| PPE | dust mask type N95 (US), Eyeshields, Gloves |
| Hazard Codes | Xn,N,T,F |
| Risk Statements | 22-38-50/53-39/23/24/25-23/24/25-52/53-11 |
| Safety Statements | 37-60-61-45-36/37-16-7 |
| RIDADR | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| RTECS | UF8225000 |
| HazardClass | 9 |
| PackingGroup | III |
| HS Code | 29189990 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Oral Aquatic Acute 1 Aquatic Chronic 1 Skin Irrit. 2 |
| Hazardous Substances Data | 93-72-1(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 650 mg/kg (Bailey, White) |
