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Piperonyl butoxide

Also known as: 5-[2-(2-Butoxyethoxy)ethoxymethyl]-6-propyl-1,3-benzodioxole, Butacide, Butacid, PBO, 2-(2-Butoxyethoxy)ethyl (6-propylpiperonyl) ether, alpha-[2-(2-Butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene, Butylcarbityl (6-propylpiperonyl) ether, INCITE, Vex

Piperonyl butoxide (CAS 51-03-6) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C19H30O5 and a molecular weight of 338.439 g/mol. Key properties include a boiling point of 396.2±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 165.3±27.2 °C. It is classified under GHS with signal word Warning and hazard statements H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51-03-6
Jingsj CID
J-26480-0
Molecular Formula
C19H30O5
Molecular Weight
338.439 g/mol
Category
Ethers
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point396.2±0.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point165.3±27.2 °C
Exact Mass338.209320
PSA46.15000
LogP4.23
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.503
Additional Property<0.1 g/100 mL at 18 ºC

GHS Safety & Compliance

Environmental HazardSignal word: Warning
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Piperonyl butoxide?

The CAS number of Piperonyl butoxide is 51-03-6.

What are the molecular formula and molecular weight of Piperonyl butoxide?

Piperonyl butoxide has molecular formula C19H30O5 and molecular weight 338.439 g/mol.

Is Piperonyl butoxide hazardous?

Piperonyl butoxide has GHS signal word Warning and hazard statements H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of Piperonyl butoxide?

For Piperonyl butoxide, Upstream Products: 2-(2-Butoxyethoxy)ethanol, Dihydrosafrole.

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

Last updated:

How to cite: Jingsj. "Piperonyl butoxide (CAS 51-03-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26480-0 (accessed 2026-11-06).

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