It's hard to say for sure. 'Tar' could be a completely fictional creation or it might draw inspiration from real-life situations and then be embellished.
Well, it could be. But often, even if inspired by real life, movies or books might tweak things for dramatic effect or to make the story more engaging. We'd need more info on 'Tar' to know for certain.
Tar fiction is not a commonly known term. Maybe it refers to some fictional works related to tar or something made up using the word 'tar' in a creative context. I'm not really sure though.
I don't think so. Tar is not typically associated with a ghost story. It's more likely to refer to a substance or something else unrelated to the supernatural.
The difference between liquid soap and liquid laundry was their active ingredients and starting materials. The active substance of the soap was mainly soap base, and its starting material came from regenerative plants. The active substance of the laundry liquid was mainly coconut acid dialcoholamid (a surface active agent), and its starting material was crude oil. In addition, the soap liquid contained a soap-based active ingredient, which was similar to grease in structure. It was more effective in removing grease stains, and it was easy to separate from the fabric, improving its bleachability. On the other hand, the laundry liquids mostly used non-ion-type surface active agents, which were close to neutral, mild to the skin, and degraded faster after being discharged into the natural world. In addition, the formula structure and implementation standards of soap and laundry liquid were also different. In general, soap was superior to laundry liquids in terms of gentleness, grease removal ability, and bleachability.