Devender, 38, a factory worker, threw acid on his wife Suman causing burns Monday night in their house in east Delhi's Mandawali area, police said. He is absconding.
Devender's niece, who was present at the spot, also received burns in the attack, police said.
"The accused fled after the crime," said a police officer.
Suman was hospitalised with 28 percent burns while Devender's niece was reported to be out of danger, police said.