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Crystallizing point (degree C) 79.6Min.
Nonvolatile % 0.02 Max.
Ash % 0.006 Max.
Color: 4 Max.
Standard applied GB6699-86 for Grade 1st
This is our national standard for 1st grade naphthalene, in fact, we do produce naphthalene better than that. If you are interested, we will be very glad to answer you.