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5-(Chloromethyl)-1,3-benzodioxole

Also known as: 3,4-Methylenedioxybenzyl chloride, Piperonyl chloride, 1,3-Benzodioxole, 5-(chloromethyl)-, 4-Chloromethyl-1,2-methylenedioxybenzene, Toluene, α-chloro-3,4-(methylenedioxy)-

5-(Chloromethyl)-1,3-benzodioxole (CAS 20850-43-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H7ClO2 and a molecular weight of 170.593 g/mol. Key properties include a melting point of 20.5ºC, a boiling point of 257.4±9.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 115.9±13.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20850-43-5
Jingsj CID
J-27928-7
Molecular Formula
C8H7ClO2
Molecular Weight
170.593 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point20.5ºC
Boiling Point257.4±9.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point115.9±13.9 °C
Exact Mass170.013458
PSA18.46000
LogP2.35
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.571

Customs & Trade Information

HS Code2932999099
Summary2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5-(Chloromethyl)-1,3-benzodioxole?

The CAS number of 5-(Chloromethyl)-1,3-benzodioxole is 20850-43-5.

What are the molecular formula and molecular weight of 5-(Chloromethyl)-1,3-benzodioxole?

5-(Chloromethyl)-1,3-benzodioxole has molecular formula C8H7ClO2 and molecular weight 170.593 g/mol.

What are the upstream and downstream products of 5-(Chloromethyl)-1,3-benzodioxole?

For 5-(Chloromethyl)-1,3-benzodioxole, Upstream Products: Piperonyl alcohol, 1,3-Benzodioxole, Formaldehyde; Downstream Products: 1-Piperonylpiperazine, Piperonyl alcohol, Piperonyl acetate.

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

Last updated:

How to cite: Jingsj. "5-(Chloromethyl)-1,3-benzodioxole (CAS 20850-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27928-7 (accessed 2026-11-09).

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