236705

Pentane

anhydrous, ≥99%

• Linear Formula: CH₃(CH₂)₃CH₃
• CAS Number: 109-66-0
• Molecular Weight: 72.15
• UNSPSC Code: 12352001
• NACRES: NA.21
• PubChem Substance ID: 57648039
• EC Number: 203-692-4
• Beilstein/REAXYS Number: 969132
• MDL number: MFCD00009498
• Assay: ≥99%
• Grade: anhydrous
• Bp: 35-36 °C (lit.)
• Vapor pressure: 26.76 psi ( 55 °C), 8.28 psi ( 20 °C)

Properties

• grade: anhydrous
• Quality Segment: 100
• vapor density: 2.48 (vs air)
• vapor pressure: 26.76 psi ( 55 °C), 8.28 psi ( 20 °C)
• assay: ≥99%
• form: liquid
• autoignition temp.: 500 °F
• expl. lim.: ~8.3 %
• impurities: <0.005% water (100 mL pkg), <0.001% water
• evapn. residue: <0.0005%
• refractive index: n20/D 1.358 (lit.)
• bp: 35-36 °C (lit.)
• mp: −130 °C (lit.)
• density: 0.626 g/mL at 25 °C (lit.)
• SMILES string: CCCCC
• InChI: 1S/C5H12/c1-3-5-4-2/h3-5H2,1-2H3
• InChI key: OFBQJSOFQDEBGM-UHFFFAOYSA-N

Description

General description

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal^™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal^™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal^™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal^™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal^™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, organometallic chemistry, and catalysis - as well as in peptide, oligonucleotide, and pharmaceutical synthesis.

Packaging

View returnable container options.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

Safety Information

• pictograms: GHS02,GHS08,GHS07,GHS09
• signalword: Danger
• hcodes: H225,H304,H336,H411
• pcodes: P210 - P233 - P240 - P273 - P301 + P310 - P331
• Hazard Classifications: Aquatic Chronic 2 - Asp. Tox. 1 - Flam. Liq. 2 - STOT SE 3
• target_organs: Central nervous system
• supp_hazards: EUH066
• Storage Class: 3 - Flammable liquids
• wgk: WGK 2
• flash_point_f: -40.0 °F
• flash_point_c: -40 °C
• ppe: Eyeshields, Faceshields, Gloves