592579

Eptano

suitable for HPLC, ≥96%

• Formula condensata: CH₃(CH₂)₅CH₃
• Numero CAS: 142-82-5
• Peso molecolare: 100.20
• Beilstein: 1730763
• Numero CE: 205-563-8
• Numero MDL: MFCD00009544
• Codice UNSPSC: 12190000
• ID PubChem: 329758614
• NACRES: NA.06

Proprietà

• Densità del vapore: 3.5 (vs air)
• Tensione di vapore: 40 mmHg ( 20 °C); 83 mmHg ( 37.7 °C)
• Saggio: ≥96%
• Forma fisica: liquid
• Temp. autoaccensione: 433 °F
• Composizione: n-heptane, 96%
• Limite di esplosione: 7 %
• Caratteristiche più verdi: Safer Solvents and Auxiliaries; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• tecniche: HPLC: suitable
• Impurezze: <0.02% water
• Residuo dopo evaporazione: <0.0003%
• Colore: APHA: ≤10
• Indice di rifrazione: n20/D 1.387 (lit.)
• P. eboll.: 98 °C (lit.); 98 °C
• Punto di fusione: −91 °C (lit.)
• Solubilità: acetone: miscible(lit.); carbon tetrachloride: soluble(lit.); ethanol: very soluble(lit.); ethyl acetate: miscible(lit.); water: insoluble(lit.)
• Densità: 0.684 g/mL at 25 °C (lit.)
• λmax: 400 nm (2nd)
• λmax: 0.01 at 254 nm
• Assorbimento: 0.10 at 225 nm; 0.40 at 210 nm; 1.0 at 197 nm
• applicazioni: food and beverages
• Categoria alternativa più verde: , Aligned
• Stringa SMILE: CCCCCCC
• InChI: 1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3; IMNFDUFMRHMDMM-UHFFFAOYSA-N

Descrizione

Descrizione generale

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 and greener alternative to hexane for chromatographic purification and thus has been enhanced for "Safer Solvents and Auxiliaries". Click here for more information.
Tools and techniques for solvent selection: green solvent selection guides.

Heptane (n-Heptane) is a primary reference fuel (PRF) for the rating of octane numbers of fuels in internal combustion engines. Its cetane number has been reported to be 56. Mechanism and kinetic studies of its oxidation in flow reactors, shock tubes and rapid compression machines have been proposed. Its thermal decomposition has been studied under different conditions of temperature and pressure. Its oxidative dehydrogenation in the presence of magnesium oxide supported vanadium catalyst has been investigated. Molybdenum phosphide supported on Hβ zeolite (MoP/Hβ) catalyzed hydroisomerization of n-heptane has been reported to be enhanced by doping with secondary metals (Cr, Ni or Ce).

Applicazioni

Greener alternatives to Hexane in HPLC.

Heptane (n-heptane) may be used:

• To compose the solvent mixtures for the purification of N-acylpyrrolidine derivatives of fatty acid methyl esters (FAMEs) by TLC (Thin Layer Chromatography).
• To generate chiral alcohols and heptanones, via whole cell double oxidation.
• As a solvent in the synthesis of isopropyl acetate, via esterification of acetic acid with isopropyl alcohol catalyzed by lipase immobilized on silica.

Caratteristiche e vantaggi

Greener alternative for hexane

Altre note

What is a green solvent? A comprehensive framework for the environmental assessment of solvents

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Informazioni sulla sicurezza

• Pittogrammi: GHS02,GHS08,GHS07,GHS09
• Avvertenze: Danger
• Indicazioni di pericolo: H225,H304,H315,H336,H410
• Consigli di prudenza: P210 - P233 - P273 - P301 + P310 - P303 + P361 + P353 - P331
• Classi di pericolo: Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
• Organi bersaglio: Central nervous system
• Codice della classe di stoccaggio: 3 - Flammable liquids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): 24.8 °F - closed cup
• Punto d’infiammabilità (°C): -4 °C - closed cup