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N,N-Diethylaniline

N,N-Diethylaniline structure

CAS No.: 91-66-7

Chemical Name:: N,N-Diethylaniline

Synonyms: DEA;DIETHYLANILINE;Diaethylanilin;N,N-Diethylanilin;Phenyldiethylamine;N-PHENYLDIETHYLAMINE;N,N-diethylbenzenamine;N, ≥99%(GC);N.N-Diethylani;diaethylaniline

CBNumber:: CB8854632

Molecular Formula:: C10H15N

Molecular Weight:: 149.23

MDL Number:: MFCD00009042

MOL File:: 91-66-7.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-04-10 10:27:31

Product description	Number	Pack Size	Price
N,N-Diethylaniline ≥99%	185868	50ml	$18.8
N,N-Diethylaniline ≥99%	185868	1l	$81
N,N-Diethylaniline >99.0%(GC)(T)	D0475	25mL	$20
N,N-Diethylaniline >99.0%(GC)(T)	D0475	500mL	$46
N,N-Diethylaniline ≥99%	185868	250ml	$57.3
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N,N-Diethylaniline Properties

Melting point	-38 °C
Boiling point	217 °C(lit.)
Density	0.938 g/mL at 25 °C(lit.)
vapor density	5.2 (vs air)
vapor pressure	1 mm Hg ( 49.7 °C)
refractive index	n20/D 1.542(lit.)
Flash point	208 °F
storage temp.	Store below +30°C.
solubility	water: soluble1g in 70ml at 12°C
pka	6.61(at 22℃)
form	Liquid
color	Clear yellow
PH	8 (0.1g/l, H2O, 20℃)
explosive limit	1.1-5.3%(V)
Water Solubility	14 g/L (12 ºC)
Merck	14,3114
BRN	742483
Henry's Law Constant	6.7×10^-2 mol/(m³Pa) at 25℃, Brockbank (2013)
Dielectric constant	5.5（19℃）
Stability	Stable. Combustible. Incompatible with strong oxidizing agents, strong acids.
InChI	1S/C10H15N/c1-3-11(4-2)10-8-6-5-7-9-10/h5-9H,3-4H2,1-2H3
InChIKey	GGSUCNLOZRCGPQ-UHFFFAOYSA-N
SMILES	CCN(CC)c1ccccc1
LogP	3.904 at 25℃
Indirect Additives used in Food Contact Substances	N,N-DIETHYLANILINE
CAS DataBase Reference	91-66-7(CAS DataBase Reference)
FDA 21 CFR	177.2420
EWG's Food Scores	2
FDA UNII	1WR1HJ2PGW
NIST Chemistry Reference	Benzenamine, N,N-diethyl-(91-66-7)
EPA Substance Registry System	N,N-Diethylaniline (91-66-7)
UNSPSC Code	12352116
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS06,GHS08,GHS09

Signal word

Danger

Hazard statements

H301+H311+H331-H315-H373-H411

Precautionary statements

P273-P280-P301+P310-P302+P352+P312-P304+P340+P311-P314

PPE

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Hazard Codes

T,N

Risk Statements

23/24/25-33-51/53

Safety Statements

28-37-45-61-28A

RIDADR

UN 2432

WGK Germany

RTECS

BX3400000

Autoignition Temperature

500 °C

Hazard Note

Toxic

TSCA

TSCA listed

HS Code

2921 42 00

HazardClass

6.1

PackingGroup

III

Storage Class

6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects

Hazard Classifications

Acute Tox. 3 Dermal
Acute Tox. 3 Inhalation
Acute Tox. 3 Oral
Aquatic Chronic 2
Skin Irrit. 2
STOT RE 2 Oral

Hazardous Substances Data

91-66-7(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: 610 mg/kg LD50 dermal Rat > 5000 mg/kg

Limited Quantities

5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid)

Excepted Quantities

Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

NFPA 704

	2
2		0

N,N-Diethylaniline price More Price(37)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	185868	N,N-Diethylaniline ≥99%	91-66-7	50ml	$18.8	2026-03-19	Buy
Sigma-Aldrich	185868	N,N-Diethylaniline ≥99%	91-66-7	1l	$81	2026-03-19	Buy
TCI Chemical	D0475	N,N-Diethylaniline >99.0%(GC)(T)	91-66-7	25mL	$20	2026-03-19	Buy
TCI Chemical	D0475	N,N-Diethylaniline >99.0%(GC)(T)	91-66-7	500mL	$46	2026-03-19	Buy
Sigma-Aldrich	185868	N,N-Diethylaniline ≥99%	91-66-7	250ml	$57.3	2026-03-19	Buy

Product number	Packaging	Price	Buy
185868	50ml	$18.8	Buy
185868	1l	$81	Buy
D0475	25mL	$20	Buy
D0475	500mL	$46	Buy
185868	250ml	$57.3	Buy

N,N-Diethylaniline Chemical Properties,Uses,Production

Description

Diethyl aniline is a colorless to yellow liquid.Molecular weight=149.26; Boiling point=216℃; Flashpoint=85℃; Autoignition temperature=630℃. HazardIdentification (based on NFPA-704 M Rating System): Health3, Flammability 2, Reactivity 0. Slightly soluble in water.

Chemical Properties

N,N-Diethylaniline is a pale yellow liquid. It is slightly soluble in water (1.40 g/L at 12°C), and soluble in alcohol and ether.

Chemical Properties

light yellow liquid

Uses

As dyestuff intermediate, in organic syntheses.

Uses

DEA (diethanolamine) is an organic alkali used in formulations to neutralize organic acids and thus adjust pH. It is usually listed on ingredient labels preceding the compound that it is neutralizing. oleth-3 phosphate, for example, is a powerful emulsifier, but it is very acidic when it is made, so manufacturers use DeA to neutralize it and improve the nature of a formulation.

Uses

N,N-Diethylaniline is used in dyestuffs and in the synthesis of other intermediates and pharmaceuticals.

Synthesis Reference(s)

Chemistry Letters, 15, p. 293, 1986
Journal of the American Chemical Society, 95, p. 3038, 1973 DOI: 10.1021/ja00790a064

General Description

A colorless to yellow liquid with a fishlike odor, that is strongly corrosive. Irritating to skin, eyes and mucous membranes and moderately toxic by inhalation, absorption and ingestion. Flash point 185°F. Used in dyes and in the production of organic chemicals.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

N,N-Diethylaniline neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Health Hazard

May be fatal if inhaled, swallowed or absorbed through the skin. Vapor or mist is irritant to the eyes, mucous membranes, upper respiratory tract; causes skin irritation. Absorption into the body leads to the formation of methemoglobin which, in sufficient concentration, may cause cyanosis. Onset may be delayed 2-4 hours or longer. Exposure can cause nausea, dizziness, headache, damage to the eyes, and blood effects.

Fire Hazard

Special Hazards of Combustion Products: Emits toxic fumes under fire conditions.

Flammability and Explosibility

Non flammable

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of NOx. See also ANILINE DYES.

Potential Exposure

Diethyl aniline is used in organic synthesis and as a diestuff intermediate.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Note to physician: Treat for methemoglobinemia.Spectrophotometry may be required for precise determination of levels of methemoglobinemia in urine.

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with DEA youshould be trained on its proper handling and storage.Diethyl aniline must be stored to avoid contact with strongoxidizers (such as chlorine, bromine, and fluorine) andstrong acids since violent reactions occur. Store in tightlyclosed containers in a cool, well-ventilated area away fromstrong acids (such as hydrochloric, sulfuric, and nitric) anddirect sunlight.

Shipping

N,N-Diethylaniline must be labeled:“POISONOUS/TOXIC MATERIALS.” It falls in HazardClass 6.1 and Packing Group III.

Purification Methods

Reflux the base for 4hours with half its weight of acetic anhydride, then fractionally distil it under reduced pressure (b 92o/10mm). [Beilstein 12 IV 252.]

Incompatibilities

Forms explosive mixture with air.Violent reaction with strong oxidizers, halogens.Incompatible with acids, organic anhydrides, isocyanates,aldehydes.

N,N-Diethylaniline Preparation Products And Raw materials

Raw materials

Ethanol Aniline

Preparation Products

4-AMINO-2-CHLORO-6-METHYL-5-NITROPYRIMIDINE 2-Chloro-4,5-diaminopyrimidine N,N-DIETHYL-P-PHENYLENEDIAMINE MONOHYDROCHLORIDE TRIOXSALEN 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine

2,4-dichloropyrimidine-5-carbonitrile 2-METHOXY-5-NITROPYRIMIDIN-4-AMINE 2,4,6-TRICHLOROPYRIMIDIN-5-AMINE 2,4-Dichloro-5-nitropyrimidine N,N-Diethyl-p-phenylenediamine sulfate

4,6-DIAMINO-5-NITROPYRIMIDINE 8-HYDROXY-7-METHOXYCOUMARIN Scopoletin 2-CHLORO-5-NITROPYRIMIDIN-4-AMINE N-(2-Amino-4,6-dichloro-5-pyrimidinyl)formamide

2,4-Dichloro-6-methyl-5-nitropyrimidine 4,5-DIAMINO-6-METHYLPYRIMIDINE 2,4-Dichloro-5-cyanopyrimidine 5-BROMO-2-CHLORO-4-(DIMETHYLAMINO)PYRIMIDINE 2-Bromofuran

6-AMINO-5-NITROPYRIMIDIN-4-OL 4,4'-Benzylidenebis[N,N-diethylaniline XANTHOTOXOL 2,4,6-TRICHLORO-5-NITROPYRIMIDINE 2-CHLORO(BROMO)PYRIMIDINE

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N,N-Diethylaniline Suppliers

Global( 376)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Changde Changlian Chemical Co., Ltd.	+86-25-86736270 +86-15905172087	brian.he@royal-chem.com	China	103	58
Yancheng Green Chemicals Co.,Ltd	+undefined-86-25-86655873	info@royal-chem.com	China	130	58
Hebei Chuanghai Biotechnology Co., Ltd	+8615350571055	Sibel@chuanghaibio.com	China	8738	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-86-13131129325 +8613131129325	sales1@chuanghaibio.com	China	5235	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21592	55
Anhui Royal Chemical Co., Ltd.	+86-025-86655873 +86-13962173137	marketing@royal-chem.com	China	201	55
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +8618949832763	info@tnjchem.com	China	2988	55
Tianjin Zhongxin Chemtech Co., Ltd.	86-22-66880623 +8618622897568	sales@tjzxchem.com	China	572	58
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29821	58
Standardpharm Co. Ltd.	86-714-3992388	overseasales1@yongstandards.com	United States	14332	58

Supplier	Advantage
Changde Changlian Chemical Co., Ltd.	58
Yancheng Green Chemicals Co.,Ltd	58
Hebei Chuanghai Biotechnology Co., Ltd	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Henan Tianfu Chemical Co.,Ltd.	55
Anhui Royal Chemical Co., Ltd.	55
Hefei TNJ Chemical Industry Co.,Ltd.	55
Tianjin Zhongxin Chemtech Co., Ltd.	58
career henan chemical co	58
Standardpharm Co. Ltd.	58

View Lastest Price from N,N-Diethylaniline manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-04-24	N,N-Diethylaniline 91-66-7	US $0.00 / kg	1000kg	99	20mt	Yancheng Green Chemicals Co.,Ltd
2026-03-20	N,N-Diethylaniline 91-66-7	US $10.00 / KG	1KG	99%	10 mt	Hebei Chuanghai Biotechnology Co., Ltd
2025-05-26	N,N-Diethylaniline 91-66-7	US $10.00 / KG	1KG	95%	10 ton	Hebei Chuanghai Biotechnology Co,.LTD

N,N-Diethylaniline
91-66-7
US $0.00 / kg
99
Yancheng Green Chemicals Co.,Ltd

N,N-Diethylaniline
91-66-7
US $10.00 / KG
99%
Hebei Chuanghai Biotechnology Co., Ltd

N,N-Diethylaniline
91-66-7
US $10.00 / KG
95%
Hebei Chuanghai Biotechnology Co,.LTD

N,N-Diethylaniline Spectrum

N,N-Diethylaniline(91-66-7)MS N,N-Diethylaniline(91-66-7)¹HNMR N,N-Diethylaniline(91-66-7)¹³CNMR N,N-Diethylaniline(91-66-7)IR1 N,N-Diethylaniline(91-66-7)Raman N,N-Diethylaniline(91-66-7)ESR

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N,N-DIETHYLANILINE, 98%N,N-DIETHYLANILINE, 98%N,N-DIETHYLANILINE, 98% N,N-DiethylbenzeneaMine Pregna-1,4-diene-3,20-dione, 17,21-bis(acetyloxy)-2-bromo-6,9-difluoro-11-hydroxy-, (6b,11b)- coMpound with borane N,N-Diethylaniline, 99% 250ML N,N-Diethylaniline, 99% 5ML N,N-Diethylaniline puriss. p.a., >=99.5% N, ≥99%(GC) N,N-Diethylaniline, >=99%(GC) N.N-Diethylani DEA, N-Phenyldiethylamine Cefepime Impurity 11 N,N-Diethylanilin n,n-diethyl-anilin n,n-diethylanilin(czech) n,n-diethylaniline,[combustibleliquid] n,n-diethyl-benzenamin N,N-Diethyl-N-phenylamine Aniline, N,N-diethyl- Benzenamine,N,N-diethyl- Diethylaminobenzene Diethylphenylamine N,N-Diathylanilin N,N-diethylbenzenamine N,N'-DIETHYLANILINE N,N-DIETHYLANILINE N,N-DIETHYLAMINOBENZENE N，N-Diethylphenylamine N-PHENYLDIETHYLAMINE Diethylaniline (DEA) N,N-DIETHYLANILINE, FREE OF MONO-COMPOUN DS N,N-DIETHYLANILINE, 99+% N,N-Diethylaniline Phosphate N,N-DiethylanilineGr(ReagentForZinc) N,N,DiethylanilineForSynthesis N,N-DIETHYLBENZAMINE diaethylaniline Diethylaniline, n,n- N,N-DIETHYLANILINE extrapure AR N,N-DIETHYLANILINE pure 17,21-Bis(acetyloxy)-2-bromo-6b,9-difluoro-11b-hydroxypregna-1,4-dien-3,20-dione Halopredone diacetate N,N-Diethylaniline> Cefepime Impurity 11（Cefepime EP Impurity G） N,N-Diethylaniline ISO 9001：2015 REACH N N-DIETHYL?ANILINE (DIETHYL?ANILINE) N,N-Diethylaniline, GR N,N-DIETHYLANILINE AR Cefepime impurity 6 (N, N-diethylaniline) N,N-Diethylaniline 98.5% For Synthesis C12604800 N,N-Diethylaniline N,N-Diethylanilin 100 μg/ml Methanol N,N-Diethylaniline N,N-Diethylaniline, 98% Phenyldiethylamine Diaethylanilin DIETHYLANILINE DEA