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Questions and Answers
What is the main difference between Resin and Rosin?
What is the main difference between Resin and Rosin?
- Resin is a living natural resource while Rosin is a solid residue obtained after distillation
- Resin contains benzoic acid while Rosin contains cinnamic acid
- Resin is insoluble in water while Rosin is a volatile oil (correct)
- Resin is used in preparation of zinc oxide while Rosin is used in adhesive plaster
What does Acid Value (AV) indicate about a substance?
What does Acid Value (AV) indicate about a substance?
- The amount of esters in the substance
- The amount of hydrolytic rancidity in the substance (correct)
- The amount of free acids in the substance
- The pH level of the substance
What is the acceptable range of Acid Value (AV) for Tolu Balsam?
What is the acceptable range of Acid Value (AV) for Tolu Balsam?
- NLT 224 and NMT 336
- NLT 168 and NMT 280 (correct)
- NLT 112 and NMT 224
- NLT 56 and NMT 168
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