Our company uses coking industrial naphthalene as the raw material,
and has achieved flaky Refined naphthalene with a purity of more than
99% after repeated directional crystallization.
1. Physical and chemical properties
Molecular formula: C10H8
Molecular weight: 128
White or slightly pink flaky crystals at room temperature, 95% Content,
has the characteristic odor of naphthalene and is soluble in ether,
alcohol, chloroform, etc., can sublimate at room temperature, and can be
formed when mixed with air Explosive mixture, a third-level dangerous
product, specific gravity 1.145, boiling point: 218°C, melting point:
80°C, explosion limit 0.9-5.19%.
2. Quality Index
Complies with the national standard GB/T6699-1998 Refined naphthalene.
The technical indexies of Refined naphthalene should meet the following requirements:
3.4 Product Specifications and Quality Index
Table 3.1 Specifications of Refined naphthalene (GB6699-1998)
| Item |
Refined naphthalene |
| Top grade |
First grade |
Qualified product |
| Appearance |
White flaky crystal, easy to sublimate |
White with reddish or yellowish powder, flaky crystal |
| Content |
More than 99% |
98.95% |
| Crystallization point (°C not less than) |
79.8 |
79.5 |
79.3 |
| Non-volatile matter, (% not greater than) |
- |
0.01 |
0.02 |
| Ash Content,% |
- |
0.006 |
0.008 |
| Pickling colorimetric, according to the standard colorimetric fluid is not deeper than |
No. 2 |
No. 4 |
- |
3. Uses
Refined naphthalene is a basic raw material such as organic chemicals
and is widely used in dyes, synthetic fibers, medicines, pesticides and
other fields.
4. Packaging
Refined naphthalene is packed in a clean polyethylene film bag, and the
outer woven bag is sealed with a string. The net weight of each bag is
50Kg.
China