Product Name:

2,4-Dichlorophenol

Synonyms:

2,4-Dichlorophenol,>85%; 2,4-Dichlorophenol For Synthesis;
2,4-dichlorophenol solution; 1,3-DICHLORO-4-HYDROXYBENZENE;
2,4-Dichlorphenol; 2,4-DICHLOROPHENOL 99+%;
2,4-DI CHLORO PHENOL; 2,4-DICHLOROPHENOL

CAS:

120-83-2

MF:

C6H4Cl2O

MW:

163

EINECS:

204-429-6

Mol File:

120-83-2.mol

Appearance

white to beige crystalline solid(Melt)

Melting point 

42-43 °C(lit.)

Boiling point 

209-210 °C(lit.)

Density 

1.383

Vapor pressure 

1.3 hPa (50 °C)

Refractive index 

1.4430 (estimate)

Fp 

237 °F

Storage temp. 

2-8°C

Solubility 

methanol: soluble 1g in 10ml; Insoluble in water.

pka

pK1:7.85 (25°C)

Water Solubility 

4.5 g/L (20 ºC)

Hazard Codes 

T,N,F

Risk Statements 

22-24-34-51/53-39/23/24/25-23/24/25-11-25

Safety Statements 

26-36/37/39-45-61-36/37-16-7

RIDADR 

UN 2928 6.1/PG 2

WGK Germany 

3

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

29081000

Chemical Properties

2,4-DCP is a colorless crystalline solid with a characteristic odor

Physical properties

Colorless to yellow crystals with a sweet, musty, or medicinal odor.
At 40 °C, the average odor threshold concentration and the lowest concentration at which an odor was detected were 29 and 5.4 μg/L, respectively. Similarly, at 25 °C, the average taste threshold concentration and the lowest concentration at which a taste was detected were 2.5 and 0.98 μg/L, respectively (Young et al., 1996).

Uses

2,4-Dichlorophenol is a chlorinated derivative of phenol and is used as an intermediate for the preparation of herbicide 2,4-dichlorophenoxyacetic acid.

Definition

A dichlorophenol that is phenol carrying chloro substituents at positions 2 and 4.

General Description

Colorless crystalline solid with a medicinal odor.
Melting point 45°C. Sinks in water.
Strong irritant to tissues; toxic by ingestion.

Reactivity Profile

2,4-Dichlorophenol can react vigorously with oxidizing agents. Can also react with acids or acid fumes. Incompatible with acid chlorides and acid anhydrides.

Shipping

UN2020 Chlorophenols, solid, Hazard Class: 6.1;
Labels: 6.1-Poisonous materials

Purification Methods

Crystallise it from pet ether (b 30-40o). Purify it also by repeated zone melting, using a P2O5 guard tube to exclude moisture. It is very hygroscopic when dry. [Beilstein 6 IV 885.]