Now as we learnt about the chemical composition, it will be easy to explain required test to identify them in a blend.
Fibers | Chemical Test | Physical Test |
Cotton | Dissolves in H2SO4 | Burns like paper (Smell) |
Jute | Dissolves in H2SO4 | Burns like paper (Smell) |
Silk | Dissolves in HCL & NaOH, NaOCl Slowly dissolves in HNO3 | Burns like hair (Smell) |
Wool | Dissolves in NaOh, NaOCl But Swells in HCL (Don't dissolve like Silk) Slowly dissolves in HNO3 | Do not set flame easily Burns like hair (Smell) |
PET | Dissolves in KOH and Phenol | Melts in flame, do not burn |
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