From the BBC:

The largest numbers of victims come from the poorest backgrounds and are women who have rejected their husbands, employers or would-be boyfriends.

The attack is not committed in a fit of anger or "passion" as is popularly believed but is premeditated and intended to kill or maim.

Mamata's story goes back 12 years, to when she was 14.

Her crime was that she refused to stay with a husband who had decided to marry again.

Over several months, while she stayed with her parents, he coaxed, threatened and tried to persuade her, but to no avail.

One day catching up with her as she headed for work, he suggested she come and sit for a while in the quiet, secluded park en route.

Then as she made to leave he grabbed her hands and threw acid over her face and arms, leaving her permanently scarred.

Twelve years on, she tries to live as normal a life as she can, though in a society where looks are everything, especially for women, getting a job, even as a domestic help, can be difficult.

One school teacher, scarred by acid, had to quit her job because the children found her frightening.

Most employers will not accept acid victims back, punishing them for a crime committed by someone else.

The National Commission of Women has of late begun to look into the possibility of a medical scheme for acid victims.

The numerous surgeries and skin grafts take decades to do and cost several thousand pounds which the victims are mostly unable to afford....

Cases of acid attack are regularly reported in the newspapers, but the government institutions and even NGOs are only just beginning to wake-up to the issue.

So as yet there are no countrywide figures for acid victims, let alone insurance or rehabilitation schemes for them.

However, a pressure group, the Campaign and Struggle Against Acid Attacks (CSAAAW), has been launched in the southern Indian state of Karnataka to increase awareness.

The group has put together a list of more than 56 victims in the state alone.

And while some might see this as evidence that it is just a Karnataka issue, the growing numbers reported by the media point to the fact that too many others are silent victims all over the country.

For many like Mamata, injustice continues in the courts - her husband is still out on bail, the father of two children, while she has nothing but her scars.