Yucheng Delong Additives Co., Ltd.
Coking Refined naphthalene
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, soluble in ether, alcohol, chloroform, etc. with a naphthalene-like odor, can sublime at room temperature, and can form explosive mixtures when mixed with air. Class III dangerous goods, 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:
1. Physical and chemical properties
Molecular formula: C10H8
Molecular weight: 128
White or slightly pink flaky crystals at room temperature, soluble in ether, alcohol, chloroform, etc. with a naphthalene-like odor, can sublime at room temperature, and can form explosive mixtures when mixed with air. Class III dangerous goods, 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.
Next product： Low-sulfur Refined naphthalene