Is Isovaleronitrile the same substance as 3-Methylbutanenitrile?

Yes. Isovaleronitrile, isobutyl cyanide and 3-Methylbutanenitrile identify the branched nitrile under CAS 625-28-5. It is not straight-chain valeronitrile. Confirm the full name, CAS number, structure and a GC or infrared identity test rather than relying on the shortened common name alone.

Which controls should be specified for bulk 3-Methylbutanenitrile?

Define GC assay, appearance, refractive index, water, acidity and relevant nitrile or residual precursor limits. State quantity, container size, destination and required release documents in the inquiry. Compare the offered batch using the same methods and use the current SDS for flammable and toxic-liquid handling requirements.

Isovaleronitrile (3-Methylbutanenitrile) CAS 625-28-5

Isovaleronitrile and 3-Methylbutanenitrile are names for the same substance, CAS 625-28-5 , EC 210-884-1 , formula C5H9N and molecular weight 83.13 g/mol. It is not isobutyronitrile or n-valeronitrile. Buyers should verify identity with a method that resolves nitrile isomers and should set limits for GC assay, water, acidity, residual halide or amide precursors, color and distillation profile.

CAS: 625-28-5
Synonyms: Isovaleronitrile, 3-Methylbutanenitrile, Isobutyl cyanide, 3-Methylbutyronitrile
Einecs: 210-884-1
Molecular Formula: C₅H₉N
Grade: Confirm identity, GC assay, C5 nitrile isomer profile, water, acidity, color, distillation range and route-related residual halide or amide precursors against the current COA and SDS.
Package: State quantity, destination and receiving method; confirm a compatible sealed flammable-liquid container, closure, fill and headspace, transport classification, temperature controls and transfer precautions against the current SDS.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Product identity	Isovaleronitrile; 3-methylbutanenitrile
CAS / EC	625-28-5 / 210-884-1
Formula / molecular weight	C₅H₉N / 83.13 g/mol
Identity boundary	Not isobutyronitrile, butyronitrile or n-valeronitrile
Key purchase controls	Identity, GC assay, nitrile isomers, water, acidity, residual halide or amide precursors, color and distillation profile

Applications and grade selection

Isovaleronitrile may be evaluated in controlled nitrile transformations and fine-chemical synthesis. The branched carbon skeleton and nitrile-isomer profile must match the intended route; a generic nitrile purity result is not enough.

Confirm that the GC method separates relevant C5 nitriles and lower-boiling impurities.
Agree limits for water, acidity, residual precursors and route-specific by-products.
Compare reaction conversion, selectivity and downstream impurity removal before routine supply.

Storage and handling

Keep tightly closed in compatible packaging away from heat, ignition sources, acids, strong bases and oxidizers under the current SDS. Prevent moisture ingress and record opening and sampling history.

Safety, documentation and procurement

Handle as a flammable nitrile using effective ventilation, ignition control and suitable personal protection. Procurement should state specification, quantity, package, destination, transport route and documents.

FAQ - Technical & Supply Chain

Q:
Is Isovaleronitrile the same substance as 3-Methylbutanenitrile?

A: Yes. Isovaleronitrile, isobutyl cyanide and 3-Methylbutanenitrile identify the branched nitrile under CAS 625-28-5. It is not straight-chain valeronitrile. Confirm the full name, CAS number, structure and a GC or infrared identity test rather than relying on the shortened common name alone.
Q:
Which controls should be specified for bulk 3-Methylbutanenitrile?

A: Define GC assay, appearance, refractive index, water, acidity and relevant nitrile or residual precursor limits. State quantity, container size, destination and required release documents in the inquiry. Compare the offered batch using the same methods and use the current SDS for flammable and toxic-liquid handling requirements.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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