Thank you for your question.
Employers owe employees 2 types of duty
The first is easy to explain it is a duty imposed by an Act of Parliament the Health and Safety at Work Act which obliges employers to provide a safe working environment.
The second is something called a "duty of care" and is something that has arisen from the decisions taken by judges in court over the years. It is called a " common law duty".
As such you have a potential claim against your employer. I say potential because medical negligence claims depend on a number of complex factors , such as has it been established that this product causes harm , can we establish regular contact , can we establish that this substance caused this harm.
However you should pursue this. You need to find personal injury lawyers in your area who deal with medical negligence claims and advertise a free first interview and that they undertake personal injury work on a no win , no fee basis. Your local free paper is a good place to start.
I hope this helps. If there are any further questions please respond and I will be happy to reply