2,4,5-Trichlorophenoxyacetic acid manufacturers and suppliers

2,4,5-Trichlorophenoxyacetic acid suppliers

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)

Safety Information

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

Use

2,4,5-Trichlorophenoxyacetic acid is a weak acid. Reacts with organic and inorganic bases to form water-soluble salts and with alcohols to form esters. Incompatible with strong oxidizing agents and strong bases. Can corrode metals, especially if moist. May harm painted surfaces .

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