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HomeProduct name list2,3,5,6-TETRACHLOROPHENOL

2,3,5,6-TETRACHLOROPHENOL

  • CAS NO.:935-95-5
  • Empirical Formula: C6H2Cl4O
  • Molecular Weight: 231.89
  • MDL number: MFCD00044671
  • EINECS: 213-310-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-15 10:43:03
2,3,5,6-TETRACHLOROPHENOL Structural

What is 2,3,5,6-TETRACHLOROPHENOL?

Chemical properties

Brown solid; phenol odor. Soluble in sodium hydroxide solutions and most organic solvents; insoluble in water.

The Uses of 2,3,5,6-TETRACHLOROPHENOL

Fungicide, wood preservative.

Definition

ChEBI: The 2,3,5,6-isomer of tetrachlorophenol

Production Methods

Chlorophenols are generally prepared by the chlorination of phenol. There are other routes of synthesis as through diazotizing p-chloroaniline or dechlorinating (by alkaline hydrolysis) 1,2,4,5-tetrachlorobenzene to yield 2,4,5-trichlorophenol (TCP). Polychlorinated dibenzo-p-dioxins can be formedduringthemanufacturingprocess of the chlorophenols. The amount formed depends on temperature and pressure process variability during production. The more notable toxic dioxin, 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD), is formed during the production of 2,4,5- TCP. Laboratory reference standards of 2,3,7,8-TCDD are prepared by heating 2,4,5-TCP under alkaline conditions. All technical and formulated products containing 2,4,5-TCP are expected to be contaminated to varying degrees by this 2,3,7,8-TCDD by-product of the manufacturing process.

General Description

Leaflets (from ligroin) or light beige powder.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

2,3,5,6-TETRACHLOROPHENOL is incompatible with acid chlorides, acid anhydrides and oxidizing agents. .

Hazard

Toxic by ingestion and inhalation, strong irritant.

Fire Hazard

Flash point data for 2,3,5,6-TETRACHLOROPHENOL are not available. 2,3,5,6-TETRACHLOROPHENOL is probably combustible.

Carcinogenicity

There was no evidence of carcinogenic activity of 2,4-dichlorophenol in F344/N rats or B6C3F1 mice from the NTP bioassay program, but 2,4,6-trichlorophenol was reported to be carcinogenic in both species.

Purification Methods

Crystallise the phenol from pet ethers. The benzoate has m 136o (from EtOH). [Beilstein 6 II 182, 6 III 730, 6 IV 1025.]

Properties of 2,3,5,6-TETRACHLOROPHENOL

Melting point: 115-116℃ (isooctane )
Boiling point: 331.59°C (rough estimate)
Density  1.6 g/cm3 (60℃)
refractive index  1.5133 (estimate)
Flash point: 11 °C
storage temp.  APPROX 4°C
solubility  Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
pka 5.09±0.20(Predicted)
form  neat
Water Solubility  0.1g/L(25 ºC)
BRN  2049586
CAS DataBase Reference 935-95-5(CAS DataBase Reference)
EPA Substance Registry System 2,3,5,6-Tetrachlorophenol (935-95-5)

Safety information for 2,3,5,6-TETRACHLOROPHENOL

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Environment
GHS09
GHS Hazard Statements H301:Acute toxicity,oral
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P273:Avoid release to the environment.

Computed Descriptors for 2,3,5,6-TETRACHLOROPHENOL

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