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Naphthalene (Carbonizing)
Technical index
| Index name |
Index |
| Refined Naphthalene |
Industrial Naphthalene |
| Top-grade |
First grade |
Qualified product |
Top-grade |
First grade |
Qualified product |
| Appearance |
white powdery , flaky crystal |
white powdery , flaky crystal with slight red or yellow |
white , powdery , flaky crystal with slight red or yellow |
| Assay, % |
99% at least |
98.95 |
96.10 |
95.00 |
| Crystallization point , °C≥ |
79.8 |
79.5 |
79.3 |
78.3 |
78.0 |
77.5 |
| Involatile matter, %≤ |
-- |
0.01 |
0.02 |
0.04 |
0.06 |
0.08 |
| Ash , % |
-- |
0.006 |
0.008 |
0.01 |
0.01 |
0.02 |
| Pickling color comparison, not danker than (compared with standard) |
2# |
4# |
-- |
-- |
-- |
-- |
Remark:
1, The value of Involatile matter is referenced only, please see the inspection report
2, The Involatile matter of industrial Naphthalene (liquid) is negotiable. |
Sign, Packing, transportation, storage and quality certificate
1 The liquid product should be stored in clean nd dry tank car and delivered to customers
2 The solid product should be stored in plastic film bag lined PP woven bag or composite plastic bag . Net wt. 25kg±O.2kg or 50kg±O.5kg, the average weight should not be less than 25 kg or 50 kg.The packing should has factory name, Add, product name, grade, trademark, , Net weight and standard No..
3 Far away from fire and heat. Solid Naphthalene should be kept in cool, dry and ventilating place, do not mix with food, oxidant and nitric acid.
4 The products should have quality certificate, with factory name, product name, standard No, batch No., gross weight, Net weight, car No., delivery date and the results of relative inspection items. |
