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8.20451

Sigma-Aldrich

2,4-Dichlorophenoxyacetic acid

for synthesis

Synonym(s):
2,4-Dichlorophenoxyacetic acid, 2,4 D-acid
Linear Formula:
2,4-(Cl)2C6H3OCH2COOH
CAS Number:
Molecular Weight:
221.04
MDL number:
EC Index Number:
202-361-1

vapor pressure

<0.01 hPa

Quality Level

assay

≥98.0% (acidimetric)

form

solid

potency

375 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rabbit)

bp

160 °C/0.53 hPa

mp

134-137 °C

solubility

0.3 g/L

density

1.42 g/cm3 at 25 °C

bulk density

720 kg/m3

storage temp.

2-30°C

InChI

1S/C8H6Cl2O3/c9-5-1-2-7(6(10)3-5)13-4-8(11)12/h1-3H,4H2,(H,11,12)

InChI key

OVSKIKFHRZPJSS-UHFFFAOYSA-N

Analysis Note

Assay (acidimetric): ≥ 98.0 %
Melting range (lower value): ≥ 134 °C
Melting range (upper value): ≤ 140 °C
Identity (IR): passes test

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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