Diphenylchloroarsine (DA) is the organoarsenic compound with the formula (C6H5)2AsCl. It is a low-melting solid. It is highly toxic and was once used in chemical warfare. It is also an intermediate in the preparation of other organoarsenic compounds. The molecule consists of a pyramidal As(III) center attached to two phenyl rings and one chloride.

CAS：712-48-1
中文别名：
英文别名：chloro-diphenyl-arsine;Arsine,chlorodiphenyl;Clark I;Diphenyl chloroarsine;Arsinous chloride, diphenyl-;chlorodiphenylarsane;Sneezing gas;Diphenylchlorarsine;Blue cross;Clark 1;Diphenylarsinous chloride;
分子式：C12H10AsCl
分子量：264.582
精确质量：263.969
Psa：0.0
Logp：2.0311

UNII：1H39V3559B

沸点：337ºC at 760 mmHg
熔点：44ºC
闪点：154.2ºC
储存条件：库房通风低温干燥,与氧化剂,酸类,食品分开储运

危险品运输编码：UN 1699
海关编码：2931900036
危险类别：6.1(a)