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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2-Chloroacrylonitrile | CAS 920-37-6

An α-chlorinated nitrile with a terminal carbon–carbon double bond, evaluated as a reactive vinyl building block and monomer, where inhibitor identity and content belong alongside the organic assay in qualification.

CAS920-37-6
Molecular formulaC3H2ClN
Molecular weight87.51 g/mol

Product overview

Chlorine and the nitrile group are attached to the same alkene carbon; the opposite end is CH2. The resulting vinyl nitrile differs from saturated chloroacetonitriles and from β-chloroacrylonitrile. External commercial presentations include hydroquinone-stabilised material, making stabilisation an essential item to clarify before comparing grades. A GC percentage alone does not define inhibitor concentration or nonvolatile content. The purchase request should identify the intended reaction or polymer evaluation, the stabiliser requirement and the method used to establish the active monomer content.

Chemical identity

Chemical name
2-Chloroacrylonitrile
CAS number
920-37-6
Molecular formula
C3H2ClN
Molecular weight
87.51 g/mol

Application context

For monomer and reactive-vinyl development, the terminal double bond provides the site through which this small chlorinated nitrile enters larger structures. Qualification must match the planned chemistry because an inhibitor useful during storage can affect a polymerisation experiment. Agree the inhibitor identity, concentration basis and analytical evidence with the selected supplier. Review nonvolatile residue when it is relevant to the process, and confirm the handling period and storage instructions for the actual stabilised grade.

Chemistry and synthetic role

The structure is CH2=C(Cl)–CN: a terminal alkene bearing chlorine and nitrile on the substituted carbon.

Quality review

Identify the α-chloro structure

Distinguish this terminal alkene from β-chloro and saturated nitriles.

Define the inhibitor

Confirm stabiliser identity and content for the proposed grade.

Measure nonvolatile material

Agree residue or oligomer review where polymer work requires it.

Preparing a specification

Specify the α-chloro monomer, assay basis, inhibitor identity and content, water as process-relevant, and any nonvolatile-residue criterion.

Packaging and storage

Packaging and net weight are agreed for the selected grade, order quantity and destination. Check the actual supplier SDS and label for storage and transport requirements.

Documentation

Request a batch COA, SDS and the analytical methods for the acceptance criteria below. Confirm which supporting chromatograms and identity data are available from the selected manufacturer.

Procurement questions

Does this molecule require an E/Z specification?

No. Its terminal alkene carbon bears two hydrogens.

Is inhibitor-free material equivalent?

It requires its own handling and process qualification.

Does high GC area rule out residue?

Nonvolatile material may need an additional test.

Technical sources
  1. PubChem CID 70198NCBI / PubChem
  2. 2-Chloroacrylonitrile C0701TCI
  3. 2-Chloroacrylonitrile safety data sheetTCI