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N,N-Diethylaniline

Also known as: N,N-Diethylaniline, N,N-Diethylbenzenamine, N,N-Diethylbenzeneamine, Phenyldiethylamine, Diethylaniline, Diethylphenylamine, Benzenamine, N,N-diethyl-

N,N-Diethylaniline (CAS 91-66-7) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C10H15N and a molecular weight of 149.233 g/mol. Key properties include a melting point of -38 °C, a boiling point of 213.5±9.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 97.8±0.0 °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.
91-66-7
Jingsj CID
J-33601-6
Molecular Formula
C10H15N
Molecular Weight
149.233 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-38 °C
Boiling Point213.5±9.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point97.8±0.0 °C
Exact Mass149.120453
PSA3.24000
LogP3.39
Additional Property5.2 (vs air)
Vapor Pressure0.2±0.4 mmHg at 25°C
Refractive Index1.533
Additional Property14 g/L (12 ºC)

GHS Safety & Compliance

Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H311 — Toxic in contact with skin
  • H331 — Toxic if inhaled
  • H373 — May cause damage to organs through prolonged exposure
  • H411 — Toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code2921420090
SummaryHS:2921420090 aniline derivatives and their salts VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of N,N-Diethylaniline?

The CAS number of N,N-Diethylaniline is 91-66-7.

What are the molecular formula and molecular weight of N,N-Diethylaniline?

N,N-Diethylaniline has molecular formula C10H15N and molecular weight 149.233 g/mol.

Is N,N-Diethylaniline hazardous?

N,N-Diethylaniline 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 N,N-Diethylaniline?

For N,N-Diethylaniline, Upstream Products: Bromobenzene, Diethylamine, Iodobenzene; Downstream Products: 4'-Diethylaminoacetophenone, 4-Ethynyl-1,2-dimethoxybenzene, 4-(Diethylamino)benzoic acid.

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

Last updated:

How to cite: Jingsj. "N,N-Diethylaniline (CAS 91-66-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33601-6 (accessed 2026-11-09).

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