Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern.
As per your complain and presentation of symptoms if you have a canker sore
over the gums then it is better not to dip tobacco as the juices released from the dip will lead to further irritation and increase in inflammation of the ulcer and will cause pain and increase in time of its outbreak.
As you want to know the acidic nature of Nicotine
, many of the products are acidic in nature and will cause irritation..
So I would suggest you to avoid dipping as not only you have ulcer but tobacco can cause oral cancer
t the site of dipping..
As of now do soda bicarb gargles.
Take anti-inflammatory painkiller Ibuprofen
If there is pain a numbing gel containing Lignocaine can be applied..
Take a multivitamin
Avoid hot and spicy food.
Drink plenty of water.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.