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Impurities and reference standards

2,3-Dimethylaniline

Also known as 2,3-Xylidine, 2,3-Dimethylbenzenamine, 3-Amino-o-xylene

CAS 87-59-2Formula C8H11NMolar mass 121.18 g/molEC 201-755-0
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard, Hazardous to the environment 13 suppliers listed
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2,3-Dimethylaniline chemical structure, C8H11N, CAS 87-59-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Liquid
Melting point
<-15
Boiling point
221.5 °C
Density
Relative density (water = 1): 0.99
Flash point
97 °C
HS code
292142
Category
Impurities and reference standards
UN number
UN 1711
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2,3-Dimethylaniline?

Plain description, key identifiers and synonyms

2,3-xylidine is a dark brown liquid. (NTP, 1992)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,3-dimethylaniline
CAS number
87-59-2 CAS number cross-checked
EC number
201-755-0
Molecular formula
C8H11N
UNII
ZD450ABI9X
MDL number
MFCD00007732
InChIKey
VVAKEQGKZNKUSU-UHFFFAOYSA-N
InChI
InChI=1S/C8H11N/c1-6-4-3-5-8(9)7(6)2/h3-5H,9H2,1-2H3
SMILES (canonical and isomeric)
CC1=C(C(=CC=C1)N)C

Synonyms

  • 2,3-Xylidine
  • 2,3-Dimethylbenzenamine
  • 3-Amino-o-xylene
  • 2,3-Dimethylphenylamine
  • Benzenamine, 2,3-dimethyl-
  • 2,3-Xylylamine
  • ortho-Xylidine
  • 1-Amino-2,3-dimethylbenzene
  • Benzene, 1-amino-2,3-dimethyl-
  • Mefenamic Acid EP Impurity A
  • 2,3-dimethyl-aniline
  • vic-o-Xylidine
  • xylidin
  • dimethylbenzenamine
  • Mefenamic Acid Imp. A (EP), 2,3-Dimethylaniline, Mefenamic Acid Impurity A
  • 2,3 Dimethylaniline
  • 2,3-dimethyl aniline
  • 2,3-Dimethylbenzeneamine
  • aniline, 2,3-dimethyl-
  • 2,3-Dimethylaniline, 99%
  • 4-12-00-02497 (Beilstein Handbook Reference)
  • Mefenamic acid impurity A CRS
  • Dimethylaniline, 2,3-
  • Xylidine 2,3-dimethylbenzenamine
  • Mefenamic acid impurity a
Show all 29 synonyms
  • 2,3-Dimethylaniline 100 microg/mL in Acetonitrile
  • Bupivacaine related compound q
  • 2,3-Dimethylaniline, United States Pharmacopeia (USP) Reference Standard
  • Mefenamic acid impurity A, European Pharmacopoeia (EP) Reference Standard

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Liquidexp.
Melting point
<-15exp.
Boiling point
221.5 °Cexp.
Density
Relative density (water = 1): 0.99exp.
Flash point
97 °Cexp.
Autoignition temperature
545 °Cexp.
Solubility
Slightly sol in waterexp.
Vapour pressure
7.5 × 10⁻² mm Hg at 25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
121.18 g/molcalc.
Exact mass
121.0891 Dacalc.
LogP (octanol/water)
1.89calc.
Topological polar surface area
26.02 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.25calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
130NFPA 704 rating

Hazard statements

  • H301 + H311 + H331Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled.
  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H331Toxic if inhaled.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (20)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1711
Transport hazard class
6.1
Packing group
II

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2,3-Dimethylaniline suppliers

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Where suppliers are based

13 suppliers in 7 countries

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2,3-Dimethylaniline price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Chemical intermediate for dyes.

Used as a chemical intermediate for the synthesis of mefenamic acid.

How it is made

Nitration and reduction of commercial xylene, followed by removal of the 2,4-, 2,5-, and 2,6-isomers, residue is made alkaline after which 2,3-isomer is precipitated as formyl deriv

O-Xylene (nitration/nitro reduction, byproduct of 3,4-xylidine production)

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2,3-Dimethylaniline is traded under.

HS 2921.42Indicative HS code

Aniline derivatives and their salts

World exports in 2024
$495M
−2.5% vs 2023, imports $440M
2019 to 2024
Top exporters
  1. China69.8%
  2. India * partner reported19.6%
  3. Japan3.3%
Top importers
  1. Pakistan17.0%
  2. United Arab Emirates * partner reported12.7%
  3. Brazil10.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 2,3-Dimethylaniline is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,3-Dimethylaniline, based on the data on this page

What is 2,3-Dimethylaniline?

2,3-xylidine is a dark brown liquid. (NTP, 1992)

What is the CAS number of 2,3-Dimethylaniline?

The CAS registry number of 2,3-Dimethylaniline is 87-59-2.

What is the molecular formula and weight of 2,3-Dimethylaniline?

The molecular formula of 2,3-Dimethylaniline is C8H11N and its molar mass is 121.18 g/mol.

What is 2,3-Dimethylaniline used for?

Chemical intermediate for dyes. Used as a chemical intermediate for the synthesis of mefenamic acid.

Is 2,3-Dimethylaniline hazardous?

2,3-Dimethylaniline carries the GHS signal word "Danger". Main hazards: toxic if swallowed. toxic in contact with skin. toxic if inhaled, toxic if swallowed, toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2,3-Dimethylaniline?

2,3-Dimethylaniline is usually classified under HS code 292142 (Aniline derivatives and their salts). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2,3-Dimethylaniline?

CompoundList lists 13 suppliers of 2,3-Dimethylaniline in China, United States, Canada, Czech Republic and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 2,3-Dimethylaniline?

Suppliers quote 2,3-Dimethylaniline on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2,3-Dimethylaniline

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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