What are the dangers of handling 0.12N sulfuric acid? I'm handling 0.12N of sulfuric acid for a science experiment that I am carrying out for a school project. I hear about all these terrible effects if it's ingested, inhaled, or gets in contact in skin. But how dangerous is it? 

My safety equipment that I'm using currently are a pair of polyvinyl gloves, goggles, long sleeve shirt, apron, jeans, and closed toe shoes. However, I do not have a respirator and wondering if I should get one. 

Would it be safe to handle this without a respirator? I will not be spraying the sulfuric acid directly in the air. However, I will be adding approximately 0.5mL of the 0.12N sulfuric acid into 500mL of water, putting it in a spray bottle, and be watering some plants with it. Will it still be dangerous even spraying a low concentration in the air? 

Would the 0.12N concentration still be enough to cause chemical burns on my skin? To what extent and severity? Also, just to confirm, it is safe to add drops of the acid to water, but not vice versa? I would really appreciate the advice that you can provide me.
0.12 Normal = 0.06 Molar.  

For comparision, concentrated sulphuric acid is 18 Molar. 

So the 0.12 N sulphuric acid is over 99% water.  


  Would it be safe to handle this without a respirator? 


Yes, the vapor pressure of sulphuric acid is low, and it has already been diluted with considerable water, so there is no need for a respirator.  


  My safety equipment that I'm using currently are a pair of polyvinyl gloves, goggles, long sleeve shirt, apron, jeans, and closed toe shoes.


Goggles are the most important safety equipment.  An eye wash station and shower are also standard lab safety equipment.  

The gloves are good because liquids will not pass through them.  Ordinary clothing isn't really helpful because if you did spill something on that part of your body, the substance would absorb into the cloth and you would just be delayed in washing that part of your body by having to take off the clothes.  


  Would the 0.12N concentration still be enough to cause chemical burns on my skin? To what extent and severity?


Pronged contact may cause some damage, but nothing comparable to the concentrated acid.  If you spill some on yourself, stay calm, and wash with soap and water. If you spill on your clothes, take the wet clothes off first, then wash with soap and water.   


  Also, just to confirm, it is safe to add drops of the acid to water, but not vice versa?


This is always a good rule to keep in mind.  0.12N is dilute enough that little heat will be released from 0.5mL, but just follow the rule.  


  However, I will be adding approximately 0.5mL of the 0.12N sulfuric acid into 500mL of water, putting it in a spray bottle, and be watering some plants with it. Will it still be dangerous even spraying a low concentration in the air? 


Now you are diluting another 1000 fold.  The solution will be around pH 4, similar to some rain water.  I would still want you to wear goggles and not spray in the direction of anyone.