51570-45-7

Basic information

• Product Name: 1,2,4,6-TETRACHLORONAPHTHALENE
• Synonyms: 1,2,4,6-TETRACHLORONAPHTHALENE;CN-33;PCN-33
• CAS NO: 51570-45-7
• Molecular Formula: C₁₀H₄Cl₄
• Molecular Weight: 265.95
• Mol File: 51570-45-7.mol
• Article Data: 1

Chemical Properties

• Melting Point: 111 °C
• Boiling Point: 340.5°Cat760mmHg
• Flash Point: 165.6°C
• Appearance: /
• Density: 1.552g/cm³
• Vapor Pressure: 0.000169mmHg at 25°C
• Refractive Index: 1.665
• CAS DataBase Reference: 1,2,4,6-TETRACHLORONAPHTHALENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,4,6-TETRACHLORONAPHTHALENE(51570-45-7)
• EPA Substance Registry System: 1,2,4,6-TETRACHLORONAPHTHALENE(51570-45-7)

Safety Data

• Hazardous Substances Data: 51570-45-7(Hazardous Substances Data)

Usage

Chemical structure

1,2,4,6-Tetrachloronaphthalene is a synthetic organic compound with four chlorine atoms attached to a naphthalene ring.

Physical appearance

It is a colorless to light brown solid.

Odor

It has a strong and distinctive odor.

Pesticide

It is used to repel or kill insects and pests.

Insecticide

It is used to control and eliminate insects.

Flame retardant

It is used to slow down the spread of fire.

Chemical intermediates

It is used in the production of other chemicals.

Aquatic toxicity

It is highly toxic to aquatic organisms.

Long-term effects

It may cause long-term adverse effects in the environment.

Carcinogenicity

It is classified as a possible human carcinogen.

Respiratory irritation

Exposure to high levels can lead to respiratory irritation.

Skin irritation

Exposure can cause skin irritation.

Kidney and liver effects

It can have harmful effects on the kidneys and liver.

Regulation and disposal

The usage and disposal of 1,2,4,6-Tetrachloronaphthalene must be carefully regulated and monitored due to its potential hazard.

InChI:InChI=1/C10H4Cl4/c11-5-1-2-6-7(3-5)8(12)4-9(13)10(6)14/h1-4H

Upstream product

• 20020-02-4 1,2,3,4-tetrachloronaphthalene 

Relevant articles and documents

Degradation of one-side fully-chlorinated 1,2,3,4-tetrachloronaphthalene over Fe-Al composite oxides and its hypothesized reaction mechanism

The degradation of 1,2,3,4-tetrachloronaphthalene (CN-27) featuring a one-side fully-chlorinated aromatic ring, was evaluated over three of the prepared rod-like Fe-Al composite oxides (FeAl-1, FeAl-5 and FeAl-10). The results showed that their reactive activities were in the order of FeAl-5 ≈ FeAl-10 ? FeAl-1, which could be attributed to their different pore structural properties and reactive sites caused by the different phase interaction between iron species and the γ-Al2O3. The generation of trichloronaphthalenes (1,2,3-TrCN and 1,2,4-TrCN, i.e. CN-13 and CN-14), dichloronaphthalenes (1,2-DiCN, 1,3-DiCN, 1,4-DiCN and 2,3-DiCN, i.e. CN-3, CN-4, CN-5 and CN-10) and monochloronaphthalenes (1-MoCN and 2-MoCN, i.e. CN-1 and CN-2) suggested the occurrence of successive hydrodechlorination reactions. The amount of CN-14 exceeded that of CN-13 from 71.5% to 77.7% across the three different systems, revealing the preferred occurrence of the first hydrodechlorination step at the β-position. This is dissimilar to the preference at the α-position observed during the dechlorination of octachloronaphthalene (CN-75) over micro/nano Fe3O4. The structural differences between one-side and two-side fully-chlorinated aromatic rings would have a pronounced impact on the reactivity of the chlorine substitution position. The major hydrodechlorination pathway was judged to be CN-27 → CN-14 → CN-4 → CN-2. Additionally, the detected 1,2,3,4,6-pentachloronaphthalene (CN-50) and 1,2,4,6/7-tetrachloronaphthalenes (CN-33/34) suggested the reverse chlorination reaction also happened while the hydrodechlorination reaction was occurring. The C-Cl bond dissociation energies (BDEs) of the parent and daughter polychlorinated naphthalene (PCN) congener were calculated using density functional theory (DFT), to achieve a deeper understanding of a different product yield distribution.