CompoundList
Sign in
Nitriles, nitro and azo compounds

Methacrylonitrile

Also known as Isopropene cyanide, Isopropenylnitrile, 2-Methylacrylonitrile

CAS 126-98-7Formula C4H5NMolar mass 67.09 g/molEC 204-817-5
GHS signal word: Danger. Pictograms: Flammable, Acute toxicity (severe) 5 suppliers listed
Get quotes Compare 5 suppliers
Methacrylonitrile chemical structure, C4H5N, CAS 126-98-7
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-35.8 °C
Boiling point
90.3 °C
Density
Relative density (water = 1): 0.8
Flash point
13 °C
HS code
292690
Category
Nitriles, nitro and azo compounds
UN number
UN 3079
Illustrative photo, clear liquid in a volumetric flask on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Methacrylonitrile?

Plain description, key identifiers and synonyms

Methylacrylonitrile is a nitrile.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methylprop-2-enenitrile
CAS number
126-98-7 CAS number cross-checked
EC number
204-817-5
Molecular formula
C4H5N
UNII
04S4K38612
MDL number
MFCD00001872
InChIKey
GYCMBHHDWRMZGG-UHFFFAOYSA-N
InChI
InChI=1S/C4H5N/c1-4(2)3-5/h1H2,2H3
SMILES (canonical and isomeric)
CC(=C)C#N

Synonyms

  • Isopropene cyanide
  • Isopropenylnitrile
  • 2-Methylacrylonitrile
  • Methylacrylonitrile
  • 2-Methyl-2-propenenitrile
  • 2-Methylpropenenitrile
  • 2-Propenenitrile, 2-methyl-
  • 2-Cyanopropene-1
  • 2-Cyano-1-propene
  • 2-Cyanopropene
  • USAF ST-40
  • RCRA waste number U152
  • alpha-Methylacrylonitrile
  • alpha-Methacrylonitrile
  • 2-methylprop-2-enenitrile
  • Methacrylonitrile (15n)
  • Methacrylonitrile (stabilized with hydroquinone monomethyl ether)
  • Methyl acrylonitrile
  • 2-Propenenitrile,2-methyl-
  • RCRA waste no. U152
  • isobutenenitrile
  • methacrylnitrile
  • Methacrylonitrile, 99%
  • Propenenitrile, 2-methyl
  • 1-Methyl-1-cyanoethylene
Show all 31 synonyms
  • Methacrylonitrile, inhibited
  • CH2C(CH3)CN
  • Methacrylonitrile, stabiliZed
  • Methyl Acrylonitrile Solution, 20,000 mg/L, 1 ml
  • Methacrylonitrile, inhibited [UN3079] [Flammable liquid]
  • Propenoic acid,2-methyl,nitrile methacryl nitrile

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
Colorless liquidexp.
Odour
Odor-like bitter almonds.exp.
Melting point
-35.8 °Cexp.
Boiling point
90.3 °Cexp.
Density
Relative density (water = 1): 0.8exp.
Flash point
13 °Cexp.
Solubility
In water, 2.54 × 10⁺⁴ mg/l @ 25 °Cexp.
Vapour pressure
71.2 mm Hg @ 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
67.09 g/molcalc.
Exact mass
67.0422 Dacalc.
LogP (octanol/water)
1.09calc.
Topological polar surface area
23.79 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
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.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
322WNFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H317May cause an allergic skin reaction.
  • H331Toxic if inhaled.
Precautionary statements (28)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • 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.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • 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.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3079
Transport hazard class
6.1
Packing group
I

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

Methacrylonitrile suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 5 suppliers
5 of 5 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

5 suppliers in 2 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Methacrylonitrile price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

In prepn of homopolymers and copolymers, as an intermediate in prepn of acids, amides, amines, esters, nitriles.

Vinyl nitrile monomer, copolymer with styrene, butadiene, etc, elastomers, coatings, plastics.

Monomer for polymethacrylonitrile.

How it is made

Vapor-phase catalytic oxidation of methallylamine, dehydration of methacrylamide, from isopropylene oxide and ammonia.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 608-010-00-2

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 Methacrylonitrile is traded under.

HS 2926.90Indicative HS code

Nitrile-function compounds, other

World exports in 2024
$2.15B
−13.5% vs 2023, imports $2.17B
2019 to 2024
Top exporters
  1. China35.6%
  2. France * partner reported12.7%
  3. India * partner reported11.2%
Top importers
  1. United States13.6%
  2. China12.4%
  3. Brazil11.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Methacrylonitrile, based on the data on this page

What is Methacrylonitrile?

Methylacrylonitrile is a nitrile.

What is the CAS number of Methacrylonitrile?

The CAS registry number of Methacrylonitrile is 126-98-7.

What is the molecular formula and weight of Methacrylonitrile?

The molecular formula of Methacrylonitrile is C4H5N and its molar mass is 67.09 g/mol.

What is Methacrylonitrile used for?

In prepn of homopolymers and copolymers, as an intermediate in prepn of acids, amides, amines, esters, nitriles. Vinyl nitrile monomer, copolymer with styrene, butadiene, etc, elastomers, coatings, plastics. Monomer for polymethacrylonitrile.

Is Methacrylonitrile hazardous?

Methacrylonitrile carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, 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 Methacrylonitrile?

Methacrylonitrile is usually classified under HS code 292690 (Nitrile-function compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Methacrylonitrile?

CompoundList lists 5 suppliers of Methacrylonitrile in China and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Methacrylonitrile in India?

1 supplier in India list Methacrylonitrile on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Methacrylonitrile?

Suppliers quote Methacrylonitrile 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 Methacrylonitrile

Get quotes for Methacrylonitrile

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Methacrylonitrile
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Methacrylonitrile with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/methacrylonitrile-126-98-7" title="Methacrylonitrile structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Nitriles, nitro and azo compounds or HS code 292690

5 suppliers
Free quotes, contact stays private
Get quotes