4-tert-Butylbenzaldehyde

Also known as: p-tert-Butylbenzaldehyde, p-t-Butylbenzaldehyde, 4-(1,1-Dimethylethyl)benzaldehyde, 4-(2-Methyl-2-propanyl)benzaldehyde, tert-Butylbenzaldehyde, Benzaldehyde, 4-(1,1-dimethylethyl)-

4-tert-Butylbenzaldehyde (CAS 939-97-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H14O and a molecular weight of 162.228 g/mol. Key properties include a boiling point of 240.8±19.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 96.9±7.6 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H334 — May cause allergy or asthma symptoms if inhaled and 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.: 939-97-9
Jingsj CID: J-27946-9
Molecular Formula: C₁₁H₁₄O
Molecular Weight: 162.228 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	240.8±19.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	96.9±7.6 °C
Exact Mass	162.104462
PSA	17.07000
LogP	3.33
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.525

GHS Safety & Compliance

Irritant / Health Hazard / Environmental HazardSignal word: Danger

H302 — Harmful if swallowed
H334 — May cause allergy or asthma symptoms if inhaled
H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	2912299000
Summary	2912299000. other cyclic aldehydes without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-tert-Butylbenzaldehyde?

The CAS number of 4-tert-Butylbenzaldehyde is 939-97-9.

What are the molecular formula and molecular weight of 4-tert-Butylbenzaldehyde?

4-tert-Butylbenzaldehyde has molecular formula C11H14O and molecular weight 162.228 g/mol.

Is 4-tert-Butylbenzaldehyde hazardous?

4-tert-Butylbenzaldehyde has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H334 — May cause allergy or asthma symptoms if inhaled; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of 4-tert-Butylbenzaldehyde?

For 4-tert-Butylbenzaldehyde, Upstream Products: tbt, (E)-3-(4-tert-Butylphenyl)prop-2-enal, 4-tert-Butylbenzyl alcohol; Downstream Products: 1,3-Diphenyl-5-(4-tert-butylphenyl)-4,5-dihydro-1H-pyrazole, 4-tert-Butylbenzylamine, 4-tert-Butylbenzonitrile.

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. "4-tert-Butylbenzaldehyde (CAS 939-97-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27946-9 (accessed 2026-11-09).

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