密度：0.659 g/mL at 25 °C(lit.)

熔点：-95 °C

沸点：68.95?°C(lit.)

折射率：1.3748-1.381

闪光点：30?°F

蒸汽压：Vapour pressure, kPa at 20°C: 17

形态：Liquid

PSA：0

logP：2.58660

溶解度：Very soluble in ethanol, ethyl ether and chloroform.

Λ：λ: 200 nm Amax: ≤0.70λ: 225 nm Amax: ≤0.10λ: 250 nm Amax: ≤0.01

黏性：3.26X10-4 Pa-s at 20 deg C

蒸汽密度：2.97

外观：无色液体，有微弱的特殊气味。

大气OH速率常数：5.61e-12 cm3/molecule*sec

存储：储存注意事项储存于阴凉、通风的库房。远离火种、热源。库温不宜超过29℃。保持容器密封。应与氧化剂分开存放，切忌混储。采用防爆型照明、通风设施。禁止使用易产生火花的机械设备和工具。储区应备有泄漏应急处理设备和合适的收容材料。

自燃温度：225 °C

致癌性：Male rabbits exposed to3000 ppm hexane (8 h/day, 6 days/week for 24 weeks)developed papillary proliferation of nonciliated bronchiolarcells. No tumors were found in mice painted withhexane and croton oil as cocarcinogen, presumably for thelifetime of each animal. Hexane  is inactive as a tumorpromotingagent.

化学性质：n-Hexane is a highly flammable liquid, usually isolated from crude oil, and has extensive industrial applications as a solvent in adhesive bandage factories and other industries.

物理属性：Clear, colorless, very flammable liquid with a faint, gasoline-like odor. An odor thresholdconcentration of 1.5 ppmv was reported by Nagata and Takeuchi (1990).

颜色：高度挥发性无色液体，有汽油味。[1]

分解：When heated to decomposition it emits acrid smoke and fumes.

可燃性：Hexane is extremely flammable (NFPA rating = 3), and its vapor can travel aconsiderable distance to an ignition source and "flash back." Hexane vapor formsexplosive mixtures with air at concentrations of 1.1 to 7.5 % (by volume). Hydrocarbons of significantly higher molecular weight have correspondingly highervapor pressures and therefore present a reduced flammability hazard. Carbondioxide or dry chemical extinguishers should be used for hexane fires.

燃烧热：4163.2 kJ/mol

汽化热：31.56 kJ/mol at 25 deg C

电离电位：10.18 eV

气味：Gasoline-like odor

气味阈值：1.5ppm

物理属性：无色易挥发液体。 难溶于水，可溶于乙醇，易溶于乙醚、氯仿、酮类等有机溶剂。

酸度系数（pka）：>14 (Schwarzenbach et al., 1993)

溶解性：不溶于水，溶于乙醇、乙醚、丙酮、氯仿等多数有机溶剂。[15]

光谱特性：Index of refraction: 1.375 @ 20 deg C

稳定性：Stable. Incompatible with oxidizing agents, chlorine, fluorine,magnesium perchlorate. Highly flammable. Readily forms explosivemixtures with air. Note low flash point.

存储温度：Store at RT.

表面拉伸：17.89 mN/m at 25 deg C

用途 用于溶剂、萃取、有机合成，如用于电子行业清洗，制药行业中作萃取剂，食用植物油的提取剂等;
用于溶剂、萃取、有机合成，电子行业用于清洗，制药工业中作萃取剂，也是食用植物油的提取剂;
用作分析试剂和溶剂;
萃取溶剂。;
主要用作溶剂，如植物油抽提溶剂、丙烯聚合溶剂、橡胶和涂料溶剂、颜料稀释剂。用于大豆、米糠、棉籽等各种食用油脂和香辛料中油脂等的抽提。此外，它还是高辛烷值燃料。;
溶剂。甲醇中水分测定。紫外光谱分析。农药残留分析。高效液相色谱。气相色谱分析标准。生化研究，蛋白质顺序分析。测定矿物折光率。有机合成。温度计中代替汞。;
作用与用途 正己烷 为有机溶剂，有良好的黏性，常用于橡胶食品、制药、香水、制鞋、胶带、制球、研磨(grinding)、皮革、纺织、家具、油漆工业、或为稀释、或为清洁溶剂、或为黏胶。另外可为萃取种籽油(seed-oil)时之溶剂(如大豆油、棉籽油、亚麻子油(flax)、花生、红花籽油(safflower)等；亦可为制造聚合物之原料；如聚丙烯(polypropylene)、聚乙烯(polyethylene)。 生产方法 正已烷在直馏汽油、铂重整抽余油或湿性天然气中的含量为1%-15%左右。目前工业生产主要从铂重整装置的抽余油（含己烷11%-13%）中分离。将抽余油精馏分离，除去轻组分和重组，得含正已烷60%-80%的馏分。采用双塔连续精馏，再经0501型催化剂加氢，除去苯等不饱和烃，得合格正已烷。美国还采用吸附分离法制备正己烷。