Skip to content
Molekula

Molekula

Isooctane 99%

SKU 90035940 CAS 540-84-1 C8H18 MW 114.23 Made to order Bulk quantities on request

Supplying 4,500+ customers in over 80 countries

ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need

Isooctane (C8H18) is a highly branched aliphatic hydrocarbon with a purity of 99%, widely used as a solvent, calibration standard in chromatography, and reference fuel in octane rating tests. It is also employed in laboratory applications requiring a non-polar, low-viscosity solvent. This product has a CAS number of 540-84-1 and a molecular weight of 114.23 g/mol. It is stored at ambient conditions and carries a **Danger** signal word due to its flammability and potential health hazards. Molekula supplies Isooctane 99% from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Expect a response within hours Speak to a chemist: +44 (0) 3302 000333

Example image for illustration only. Other packaging and pack sizes are available.

Pricing & pack sizes

Pack sizes & pricing

Pricing on request — packs available from research to bulk quantities.

Need a different quantity or pack?

Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.

Quantity
Unit
Needed by
Full name
Email
Company
Phone (optional)
Notes

Expect a response within hours

Prices exclude VAT/sales tax and shipping.

Specifications

Property Value
Appearance Clear and colourless liquid
Density 694-698 kg/m3 (15°C)
Water ≤100mg/kg
Assay ≥ 99.00% (V)
Non-Volatile Matter ≤1.0mg
Aromatics ≤50mg/kg
Acid Wash Colour 0
Identification (RAMAN) Conforms to Reference

Storage & handling

Property Value
Storage Temperature Ambient
Flash Point -12 °C
Transport Class 3
Packing Group II
Acidity Acid

Literature values

Published physical properties of the substance, not batch specifications.

Property Value
Appearance Mobile liquid
Odour Odor of gasoline
Melting Point -107 °C
Boiling Point 99.24 °C
Density 0.69 (relative, water = 1)
Vapour Pressure 5.1 kPa at 20 °C
Refractive Index 1.39157

Source: PubChem CID 10907 (HSDB, ICSC)

Identification

Property Value
SKU 90035940
CAS Number 540-84-1
IUPAC Name 2,2,4-trimethylpentane
EC Number 208-759-1
Molecular Formula C8H18
Molecular Weight 114.23
Exact Mass 114.1409
SMILES CC(C)CC(C)(C)C
InChIKey NHTMVDHEPJAVLT-UHFFFAOYSA-N
InChI InChI=1S/C8H18/c1-7(2)6-8(3,4)5/h7H,6H2,1-5H3
PubChem CID 10907
UN Number UN1262
REACH Code Y110
TSCA Listed Yes
HTS Code 2901.10.4000
Tariff Code 2901100000

Safety & GHS

Danger
  • GHS pictogram — Flammable Flammable GHS02
  • GHS pictogram — Health Hazard Health Hazard GHS07
  • GHS pictogram — Serious Health Hazard Serious Health Hazard GHS08
  • GHS pictogram — Hazardous to the Environment Hazardous to the Environment GHS09

Hazard statements

  • H225 Highly flammable liquid and vapour
  • H304 May be fatal if swallowed and enters airways
  • H315 Causes skin irritation
  • H336 May cause drowsiness or dizziness
  • H400 Very toxic to aquatic life
  • H410 Very toxic to aquatic life with long lasting effects

Precautionary statements

  • P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
  • P233 Keep container tightly closed
  • P273 Avoid release to the environment
  • P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
  • P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
  • P403+233 Store in a well ventilated place. Keep container tightly closed

Documents

Safety Data Sheets (SDS)

Available in English, French, German, Italian, Spanish.

Certificate of Analysis (CoA) by batch

Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.

Synonyms

  • 2,2,4-Trimethylpentane
  • 2,2,4-trimethylpentane (tmp)
  • 2,4,4Trimethylpentane
  • Isobutyltrimethylethane
  • NHTMVDHEPJAVLT-UHFFFAOYSA-N
  • Pentane, 2,2,4-trimethyl-
  • Trimethylpentane
  • UN 1262

Frequently asked questions

What is isooctane 99% commonly used for?

Isooctane 99% is primarily used as a solvent in laboratories, a calibration standard for gas chromatographs, and as a component in fuel blends and octane boosters.

What is the chemical formula and molecular weight of isooctane?

The chemical formula is **C₈H₁₈**, and the molecular weight is **114.23 g/mol**.

How should isooctane 99% be stored?

Store in a tightly sealed container at **ambient temperature**, away from ignition sources, oxidizing agents, and direct sunlight.

What grade of isooctane 99% does Molekula supply?

Molekula supplies **analytical grade (99% purity)** isooctane, suitable for high-precision applications like chromatography.

Can Molekula supply isooctane in bulk quantities?

Yes, we offer isooctane in bulk, with quantities tailored to your requirements—please contact us for pricing and availability.

What documentation comes with an order of isooctane 99%?

Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and a product specification sheet detailing purity and quality controls.

Ready to order or need a custom pack?

Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.

Talk to a chemist
Documents Pricing
Request a quote
Tell us the product and the quantity you need — including quantities larger than our listed packs. Expect a response within hours.
Full name
Company
Email
Phone (optional)
Product
Quantity needed

Ask for whatever you actually need — the pack sizes on our catalogue pages are a starting point, not a limit.

Message
View basket