1.04365

n-Heptane

EMPLURA^®

• Synonym(s): Heptane
• Linear Formula: CH₃(CH₂)₅CH₃
• CAS Number: 142-82-5
• Molecular Weight: 100.20
• Beilstein/REAXYS Number: 1730763
• MDL number: MFCD00009544
• UNSPSC Code: 12191502
• EC Index Number: 205-563-8
• NACRES: NB.21

Properties

• vapor density: 3.5 (vs air)
• Quality Level: 200
• vapor pressure: 40 mmHg ( 20 °C); 83 mmHg ( 37.7 °C)
• product line: EMPLURA^®
• assay: ≥99% (GC)
• form: liquid
• autoignition temp.: 433 °F
• potency: >5000 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 7 %
• greener alternative product characteristics: Safer Solvents and Auxiliaries; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• impurities: ≤0.005% Free acid (as CH₃COOH)
• evapn. residue: ≤0.0050%
• refractive index: n20/D 1.387 (lit.)
• bp: 98 °C (lit.)
• mp: −91 °C (lit.)
• transition temp: flash point -4 °C
• solubility: 0.05 g/L
• density: 0.684 g/mL at 25 °C (lit.)
• greener alternative category: Aligned
• storage temp.: 2-30°C
• SMILES string: CCCCCCC
• InChI: 1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
• InChI key: IMNFDUFMRHMDMM-UHFFFAOYSA-N

Description

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. Heptane is an environmentally preferable solvent compared to hexane and thus align with "Safer Solvents and Auxiliaries". Click here for more information.

Application

Heptane can be used as a solvent in the chromatographic purification of chemical intermediates. It can also be used as an extraction solvent for the extraction of aromatic sulfur compounds in the presence of ionic liquids. Heptane is used as an alternative solvent for hexane for the extraction of oil from cottonseed because it does not have environmental concerns as hexane.

Analysis Note

Purity (GC): ≥ 99.0 %
Identity (IR): conforms
Free acid (as CH₃COOH): ≤ 0.005 %
Density (d 20 °C/ 4 °C): 0.683 - 0.684
Matter discolored by H₂SO₄: ≤ 10 Hazen
Evaporation residue: ≤ 0.0050 %

Legal Information

EMPLURA is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS02,GHS08,GHS07,GHS09
• signalword: Danger
• hcodes: H225,H304,H315,H336,H410
• pcodes: P210 - P233 - P273 - P301 + P310 - P303 + P361 + P353 - P331
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 2
• flash_point_f: 24.8 °F - closed cup
• flash_point_c: -4 °C - closed cup