有挥发性。能随水蒸气挥发。溶于苯、石油醚和乙醇，不溶于水。低毒，半数致死量(大鼠，经口)1540mg/kg。有刺激性。 显微镜测定结晶折光率用的浸液。油脂的溶剂。气相色谱固定液(最高使用温度75℃，溶剂为氯仿、甲醇)，分离和分析低级烃和卤代烃，选择性保留芳香族化合物，能分离二甲苯异构物。 1-Chloronaphthalene (CN) improves the power conversion efficiency of bulk heterojunction solar cells. It forms 2:2 inclusion complex with β-cyclodextrin (β-CD), which is generated by the self-association of 1:1 β-CD-1CN inclusion complexes 1-Chloronaphthalene was used as solvent additive in the fabrication of fullerene based photovoltaic devices. It was also used in preparation of PVC based membranes of 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrinatocobalt(II) for arsenite determination.