Drain cleaner is sodium hydroxide in solution, which is a powerful base.
YES for human health and your drain
This because a strong base dissolves a wide range of organic material with minimal damage to metals and plastics commonly used in combination with drain pipes. One could ofcourse use certain acids but this would be dissolving metals and possibly plastic used in the drain pipes. Regards.
It depends on the type of drain cleaner. Some are acidic (i.e. sulphuric acid based) and some are basic (i.e. sodium hydroxide based), but it would be unlikely that a drain cleaner would have a neutral pH.
Because... IT IS
Probably a hair clog. Snake it or use a drain cleaner.
If it is an alkali drain cleaner, you can add acidic materials in the drain cleaner such as lemons, If it is an acidic drain (less common) cleaner, you can add alkali materials such as toothpaste, soap
Pour a half cup of baking soda down the drain followed by a half cup of vinegar. Cover the drain. After letting the mixture sit for several minutes, flush the drain with HOT water. Try removing the cover on the drain and cleaning any hair or gunk you can see. The hair is probably built up in the trap under the floor and unless you have a basement it will be difficult to remove and clean it. If the baking soda and vinegar doesn't work and you can not get access to the pipes, you'll want to use something that dissolves hair, the most likely cause of the drain slowing, but is gentle on plastic pipes.
Liquid drain cleaner is highly basic.
Drain cleaner pollutes the environment after it is poured down the drain. You should use green cleaners.
Drain cleaner or a snake. If you use a snake, take the overflow plate off on the side of the tub above the drain and go down from there. That saves making the sharp bend if you go through the drain itself. It may be hair wrapped around the drain shut off which will come out when you remove it from the overflow tube.
soap
pink
Drain cleaner is sodium hydroxide in solution, which is a powerful base.
YES for human health and your drain
Either snake it or chemical drain cleaner.
yes