A7846512
2,4,5-Trichlorophenoxyacetic acid solution , 100ng/μLinacetonitrile,analyticalstandard , 93-76-5
Synonym(s):
2,4,5-T;2,4,5-Trichlorophenoxyacetic acid;Trioxone
CAS NO.：93-76-5
Empirical Formula: C8H5Cl3O3
Molecular Weight: 255.48
MDL number: MFCD00004301
EINECS: 202-273-3
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 154-158 °C(lit.) |
| Boiling point: | 361.82°C (rough estimate) |
| Density | 1.6048 (rough estimate) |
| vapor pressure | 6.46 at 25 °C (Lewis, 1989) |
| refractive index | 1.4700 (estimate) |
| Flash point: | 2 °C |
| storage temp. | 0-6°C |
| solubility | Soluble in ethanol (548.2 mg/L), ether (243.2 mg/L), heptane (400 mg/L), xylenes (6.8 g/L),
methanol (496 g/L), toluene (7.32 g/L) (quoted, Keith and Walters, 1992). |
| pka | 2.80 and 2.83 at 25 °C (ionic strength <0.01 M, Jafvert et al., 1990) 2.88 (Nelson and Faust, 1969) |
| form | crystalline |
| color | off-white to yellow |
| Water Solubility | 238mg/L(20 ºC) |
| Merck | 13,9111 |
| Henry's Law Constant | 4.87 at 25 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: TWA 10 mg/m3, IDLH 250 mg/m3; OSHA PEL: TWA
10 mg/m3; ACGIH TLV: TWA 10 mg/m3. |
| Stability: | Stable. Incompatible with strong bases, strong oxidizing agents, alkali metals, amines, alcohols. Reacts with many common metals. |
| CAS DataBase Reference | 93-76-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Acetic acid, 2,4,5-trichlorophenoxy-(93-76-5) |
| EPA Substance Registry System | 2,4,5-T (93-76-5) |
Description and Uses
2,4,5-T was formerly used as a herbicide. Itis currently not used, following a ban by theEPA.
Safety
| Symbol(GHS) |   GHS06,GHS09 |
| Signal word | Danger |
| Hazard statements | H301-H312-H315-H319-H335-H410 |
| Precautionary statements | P261-P273-P280-P301+P310-P302+P352+P312-P305+P351+P338 |
| Hazard Codes | Xn,N,F |
| Risk Statements | 22-36/37/38-50/53-36-20/21/22-11 |
| Safety Statements | 24-60-61-36/37-26-16 |
| RIDADR | UN 2811 6.1/PG 3 |
| OEB | B |
| OEL | TWA: 10 mg/m3 |
| WGK Germany | 3 |
| RTECS | AJ8400000 |
| HazardClass | 6.1(b) |
| PackingGroup | III |
| HS Code | 29189100 |
| Hazardous Substances Data | 93-76-5(Hazardous Substances Data) |
| Toxicity | LC50 (96-hour) for rainbow trout 350 mg/L and carp 355 mg/L (Hartley and Kidd, 1987); acute oral LD50 for rats 500 mg/kg (Hartley and Kidd, 1987), 300 mg/kg (RTECS, 1985). |
| IDLA | 250 mg/m3 |
