2,2,4-Trimethylpentane (Isooctane), HPLC Grade, ≥99% - 4L

SKU: 34862-4L
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2,2,4-Trimethylpentane (Isooctane) is a high-purity, saturated branched hydrocarbon suitable for HPLC applications and analytical laboratory use. With ≥99% assay purity and tightly controlled impurity levels, this solvent is designed for chromatographic workflows requiring low UV absorbance and minimal non-volatile residue.

Commonly used in hydrocarbon analysis, fuel research, and physical property evaluation studies, isooctane provides consistent performance in method development and quality control environments. Manufactured to HPLC grade specifications and filtered to ensure clarity, it is suitable for demanding laboratory applications across academic, regulatory, and analytical settings.

Chemical Name: 2,2,4-Trimethylpentane
Synonym: Isooctane
CAS Number: 540-84-1
Molecular Formula: C8H18
Molecular Weight: 114.23 g/mol
Grade: HPLC Grade
Assay: ≥99%
EC Number: 208-759-1
MDL Number: MFCD00008943
NACRES: NA.21
PubChem ID: 329755071

Specifications

2,2,4-Trimethylpentane (Isooctane), HPLC Grade, ≥99%

• Assay (GC): ≥99%
• Form: Clear liquid
• Molecular Weight: 114.23 g/mol
• Vapor Pressure: 41 mmHg at 21 °C
• Vapor Density: 3.9 (vs air)
• Density: 0.692 g/mL at 25 °C
• Melting Point: -107 °C (lit.)
• Autoignition Temperature: 745 °F
• Explosive Limit: 6%
• Non-volatile Matter: ≤0.0005%
• Free Acid (as CH3COOH): ≤0.001%
• Water (Karl Fischer): ≤0.01%
• Transmittance:
 – 210 nm: ≥20%
 – 235 nm: ≥80%
 – 270 nm: ≥98%
• Technique Suitability: HPLC

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