1,2,3,5-Tetrachlorobenzene

Also known as: 1,2,3,5-TETRACHLOROBENZENE, 1,2,3,5-TeCB, 1,2,3,5-tetrachloro-benzene, 1,2,3,5-tetraclorobenzene, 1,2,4,6-tetrachlorobenzene, Benzene, 1,2,3,5-tetrachloro-, EINECS 211-217-7, MFCD00000543

1,2,3,5-Tetrachlorobenzene (CAS 634-90-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H2Cl4 and a molecular weight of 215.892 g/mol. Key properties include a melting point of 54.5°C, a boiling point of 249.4±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 110.0±23.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 634-90-2
Jingsj CID: J-36691-5
Molecular Formula: C₆H₂Cl₄
Molecular Weight: 215.892 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	54.5°C
Boiling Point	249.4±35.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	110.0±23.3 °C
Exact Mass	213.891068
LogP	4.31
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.583

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger

H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H331 — Toxic if inhaled
H370 — Causes damage to organs

Customs & Trade Information

HS Code	2903999090
Summary	2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,2,3,5-Tetrachlorobenzene?

The CAS number of 1,2,3,5-Tetrachlorobenzene is 634-90-2.

What are the molecular formula and molecular weight of 1,2,3,5-Tetrachlorobenzene?

1,2,3,5-Tetrachlorobenzene has molecular formula C6H2Cl4 and molecular weight 215.892 g/mol.

Is 1,2,3,5-Tetrachlorobenzene hazardous?

1,2,3,5-Tetrachlorobenzene has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.

What are the upstream and downstream products of 1,2,3,5-Tetrachlorobenzene?

For 1,2,3,5-Tetrachlorobenzene, Upstream Products: 2,4,6-Trichloroaniline, 1,2-Dichlorobenzene, Pentachlorobenzene; Downstream Products: 3,5-Dichlorobiphenyl, 1,3,5-Trichlorobenzene, 2,3,5-Trichlorobiphenyl.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1,2,3,5-Tetrachlorobenzene (CAS 634-90-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36691-5 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.