592579

庚烷

suitable for HPLC, ≥96%

• 线性分子式: CH₃(CH₂)₅CH₃
• CAS号: 142-82-5
• 分子量: 100.20
• Beilstein: 1730763
• EC號碼: 205-563-8
• MDL號碼: MFCD00009544
• 分類程式碼代碼: 12190000
• PubChem物質ID: 329758614
• NACRES: NA.06

属性

• 蒸汽密度: 3.5 (vs air)
• 蒸汽壓力: 40 mmHg ( 20 °C); 83 mmHg ( 37.7 °C)
• 化驗: ≥96%
• 形狀: liquid
• 自燃溫度: 433 °F
• 成份: n-heptane, 96%
• expl. lim.: 7 %
• 環保替代產品特色: Safer Solvents and Auxiliaries; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• 技術: HPLC: suitable
• 雜質: <0.02% water
• 蒸發殘留物: <0.0003%
• 顏色: APHA: ≤10
• 折射率: n20/D 1.387 (lit.)
• bp: 98 °C (lit.); 98 °C
• mp: −91 °C (lit.)
• 溶解度: acetone: miscible(lit.); carbon tetrachloride: soluble(lit.); ethanol: very soluble(lit.); ethyl acetate: miscible(lit.); water: insoluble(lit.)
• 密度: 0.684 g/mL at 25 °C (lit.)
• λmax: 400 nm (2nd)
• λmax: 0.01 at 254 nm
• 吸收: 0.10 at 225 nm; 0.40 at 210 nm; 1.0 at 197 nm
• 應用: food and beverages
• 環保替代類別: , Aligned
• SMILES 字串: CCCCCCC
• InChI: 1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3
• InChI 密鑰: IMNFDUFMRHMDMM-UHFFFAOYSA-N

说明

一般說明

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).

應用

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.

特點和優勢

Greener alternative for hexane

其他說明

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

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安全信息

• 象形圖: GHS02,GHS08,GHS07,GHS09
• 訊號詞: Danger
• 危險聲明: H225,H304,H315,H336,H410
• 防範說明: P210 - P233 - P273 - P301 + P310 - P303 + P361 + P353 - P331
• 危險分類: Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3
• 標靶器官: Central nervous system
• 儲存類別代碼: 3 - Flammable liquids
• 水污染物質分類（WGK）: WGK 2
• 閃點（°F）: 24.8 °F - closed cup
• 閃點（°C）: -4 °C - closed cup