noty

Thanks woelen for your nice suggestions, actually i just need to work on it 5-6 time a month, and i hope it will not be a matter of problem. I will just make a stock solution once in a month. Actually somebody told me that it is too dangerous, i searched on net but could not find anything about it when it is in solution form (< 2g/L). But still i have queries, actually i want to know, If i work once in a week on 100 mg/L phenol at a place without hood, will it be a problem to me or anyother persons in the lab. Actually i havent read anything about it. Secondly at what concentration level do you think it is good to be more careful or do you suggest when i will handle pure phenol ony then .

Hi, can anyone tell me how much toxic a phenol solution is. For eg. is a solution of 100 mg/L dangerous, if prepared in lab without hood?? Till what limit can we prepare a phenol solution without vent hood??

I ignited a planty material in a porcelain dish at 900ºC, to see its ash content, but i saw some rection took place between the dish and material(which is of vegetable origin). Can anyone help me in knowing what could be the material that has reacted and how to remove that material from the dish, so as to analyse it further, and also how to clean my porcelain dish.