Please Note: We are not able to ship this product to Northern Ireland.

Isoamyl Alcohol 99% (GW)

Isoamyl Alcohol 99% (GW)
Price: £19.73
Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Wednesday the 22nd October 2025*
In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)
4 to 6 weeks approx. (Not guaranteed)
UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland, Jersey and Guernsey.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed
  • Esters
  • Flavourings
  • Antifoaming agents
  • RNA research
  • Bacterial testing

What is Isoamyl Alcohol? It is a colourless liquid with the formula C5H12O. It is one of several isomers of amyl alcohol (pentanol). It is also known as isopentyl alcohol, isopentanol, or (in the IUPAC recommended nomenclature) 3-methyl-butan-1-ol. An obsolete name for it was isobutyl carbinol. Isoamyl alcohol is an ingredient in the production of banana oil, an ester found in nature and also produced as a flavouring in industry. It is a common fusel alcohol, produced as a major by-product of ethanol fermentation.

Consistent Quality: We provide only high-quality Isoamyl Alcohol 99% ensuring reliable and consistent performance for all applications.

Glass Winchester Bottle: Available in 500ml, 1L and 2.5L pack sizes. Our Glass Winchester bottles can store chemicals that may be sensitive to light due to filtering potentially harmful UV rays. Bottles are durable, versatile and perfect for storing products in the chemical, pharmaceutical and cosmetic industries.

Frequent Uses

Pharmaceuticals
Used in the synthesis of several common drugs.

Bacterial testing
Isoamyl alcohol is an ingredient of Kovac's reagent, used for the bacterial diagnostic indole test. This reagent is used in the confirmation of E. coli and many other pathogenic microorganisms.

Ester production
It is an ingredient in the production of banana oil, an ester found in nature and also produced as a flavouring in the food industry.

Antifoaming agent
Employed as an antifoaming agent in the chloroform isoamyl alcohol reagent.

Genetic research
Isoamyl alcohol is used in a phenol–chloroform extraction mixed with the chloroform to further inhibit RNase activity and prevent solubility of RNAs with long tracts of poly-adenine.

  • Minimum Assay: >99.3%
  • Molecular Formula: C5H12O
  • Molecular Weight: 88.15 g/mol
  • Boiling Point: 130°C
  • Melting Point: -117°C
  • Density at 25°C (g/cm3): 0.811
  • Refractive Index: 1.406
  • 3-Methyl-1-Butanol: <75.3%
  • 2 Methyl-1-Butanol: <24%

Packing Group: 3

Hazard Phrases: Flammable liquid and vapour. Causes skin irritation. Causes serious eye irritation. Harmful if inhaled. May cause respiratory irritation.

Prec Phrases: Keep away from heat/sparks/open flames/hot surfaces. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. In case of fire: Use

Flammable CLP Image Harmful CLP Image

Cas No: 123-51-3
Einecs No: 204-633-5
UN1120

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Source Chemicals Ltd