常见问题(FAQs)

1,3,5-Trichloro-2-(chloromethyl)benzene: FAQs & Guide

1,3,5-Trichloro-2-(chloromethyl)benzene is a polychlorinated aromatic building block bearing a reactive benzylic chloride handle, making it a versatile electrophilic intermediate for organic synthesis and materials research.

CAS Number
Not confirmed in source material — needs review
Molecular Formula
C7H4Cl4
Molecular Weight
Approximately 229.91 g/mol (calculated from formula C7H4Cl4)
Functional Groups
Three ring-bound aryl chlorides and one benzylic chloromethyl group
Primary Use
Electrophilic alkylating/benzylating intermediate in organic synthesis
SKU
T690931
Supplier
Aladdin Scientific

Chemical Identity and Structure

1,3,5-Trichloro-2-(chloromethyl)benzene is an aromatic compound with the molecular formula C7H4Cl4. Its structure consists of a benzene ring substituted at the 1, 3, and 5 positions with chlorine atoms, and at the 2 position with a chloromethyl (–CH2Cl) group. The three ring chlorines reduce electron density on the aromatic ring, while the benzylic –CH2Cl group provides a distinct and highly reactive electrophilic site. This combination of features distinguishes it from simple benzyl chlorides and makes it a useful building block for constructing complex halogenated architectures.

Note: The exact CAS number and confirmed physical constants (melting point, boiling point, density) are not available in the current source material and should be verified against the certificate of analysis (CoA) or a primary chemical database before use.

Common Research and Synthetic Applications

The benzylic chloride moiety in 1,3,5-Trichloro-2-(chloromethyl)benzene is susceptible to nucleophilic substitution reactions (SN2), enabling coupling with amines, thiols, alcohols, and carbon nucleophiles. Typical applications include:

  • Synthesis of polychlorinated benzyl derivatives for use as pharmaceutical intermediates or agrochemical precursors.
  • Construction of ether and thioether linkages via reaction with alcohols or thiols under mild base conditions.
  • Polymer and materials chemistry, where multi-halogenated arenes serve as crosslinkers or monomers.
  • Friedel–Crafts type reactions mediated by Lewis acids, exploiting both the benzylic chloride and the electron-poor aromatic ring.

Researchers should verify applicability for their specific transformation, as the three ring-bound chlorines significantly modulate reactivity relative to unsubstituted benzyl chloride.

Safe Handling, Storage, and Regulatory Considerations

As a polychlorinated benzyl chloride, this compound should be treated with appropriate caution:

  • Personal protective equipment (PPE): Wear chemical-resistant gloves, a lab coat, and safety goggles. Work in a well-ventilated fume hood, as benzylic chlorides are potential lachrymators and skin/mucous membrane irritants.
  • Storage: Store in a tightly sealed container in a cool, dry location away from moisture, light, and incompatible nucleophiles or bases. Exact recommended temperature range should be confirmed from the product CoA.
  • Waste disposal: Dispose of halogenated waste according to your institution's chemical waste management procedures and local regulations.
  • SDS review: Consult the Safety Data Sheet (SDS) supplied with SKU T690931 before first use for authoritative hazard, first-aid, and disposal information.

Specific GHS hazard classifications and H/P statements for this product should be taken directly from the official SDS, not from this document.

Purity, Quality, and Ordering Information

Aladdin Scientific supplies 1,3,5-Trichloro-2-(chloromethyl)benzene under SKU T690931. When evaluating suitability for your research:

  • Purity specification: Confirm the stated purity grade from the current product listing or CoA. Typical analytical methods for halogenated arenes include GC or HPLC purity determination and NMR identity confirmation.
  • Lot-specific CoA: Request a lot-specific certificate of analysis to verify identity (NMR, MS), purity, and appearance before use in sensitive reactions.
  • Pack sizes and pricing: Contact Aladdin Scientific or check the online catalog for available quantities, current pricing, and lead times.
  • Custom quantities: For bulk or custom packaging requirements, contact the Aladdin Scientific sales team directly.

Purity values and available pack sizes are not stated in the current source material and must be confirmed from the live product page or by contacting customer support.

Frequently asked questions

What is 1,3,5-Trichloro-2-(chloromethyl)benzene used for in organic synthesis?

It primarily functions as an electrophilic benzylating agent. The benzylic –CH2Cl group undergoes nucleophilic substitution with amines, thiols, alcohols, and carbon nucleophiles to form new C–N, C–S, C–O, or C–C bonds. The three ring chlorines also offer handles for further cross-coupling or substitution chemistry.

How should I store 1,3,5-Trichloro-2-(chloromethyl)benzene to maintain stability?

Store the compound in a tightly sealed container in a cool, dry, and dark environment, away from moisture, strong bases, and nucleophiles that could react with the benzylic chloride. Always confirm specific storage temperature recommendations from the product's Certificate of Analysis (CoA) or Safety Data Sheet (SDS).

Is 1,3,5-Trichloro-2-(chloromethyl)benzene hazardous, and what precautions should I take?

As a benzylic chloride compound, it is expected to be an irritant to skin, eyes, and the respiratory tract, and may act as a lachrymator. Always work in a well-ventilated fume hood wearing appropriate PPE including chemical-resistant gloves, lab coat, and safety goggles. Consult the official SDS for SKU T690931 for complete GHS hazard classifications and emergency procedures.

What is the molecular formula and approximate molecular weight of this compound?

The molecular formula is C7H4Cl4, giving a calculated molecular weight of approximately 229.91 g/mol. This reflects four chlorine substituents in total: three on the aromatic ring and one on the methylene group.

Can I request a Certificate of Analysis (CoA) for SKU T690931?

Yes. Lot-specific Certificates of Analysis for T690931 are available from Aladdin Scientific. Contact customer support or use the online product page to request your lot's CoA, which will include identity confirmation, purity data, and appearance specifications.

References

  1. Aladdin Scientific product listing: 1,3,5-Trichloro-2-(chloromethyl)benzene, SKU T690931. Aladdin Scientific.
  2. March, J. Advanced Organic Chemistry: Reactions, Mechanisms, and Structure. 4th ed. Wiley-Interscience, 1992. (General reference for nucleophilic substitution at benzylic halides.)
  3. Clayden, J.; Greeves, N.; Warren, S. Organic Chemistry. 2nd ed. Oxford University Press, 2012. (General reference for halogenated aromatic compound reactivity.)

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.

目录: 常见问题(FAQs)

Da — 若无特别说明,分子量单位默认为道尔顿。   Mw — 重均分子量。   Mn — 数均分子量。

产品仅供科研与开发使用,不用于人体、动物、诊断或治疗。

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阿拉丁科学.《1,3,5-Trichloro-2-(chloromethyl)benzene: FAQs & Guide》. 阿拉丁知识库,更新于 2026年9月24日。 https://www.aladdin-e.com/zh_cn/faqs/1-3-5-trichloro-2-chloromethyl-benzene-faq-en.html
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