Yucheng Delong Additives Co., Ltd.
Pure white 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
Pure white flaky crystals at room temperature, the main raw material for camphor balls or naphthalene pellets. Has the characteristic odor of naphthalene and is soluble in ether, alcohol, chloroform, etc. It can be sublimated at room temperature and mixed with air. It can form an explosive mixture and belongs to the third-level dangerous goods. The specific gravity is 1.145, the boiling point: 218℃, the melting point: 80℃, and the explosion limit is 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
Pure white flaky crystals at room temperature, the main raw material for camphor balls or naphthalene pellets. Has the characteristic odor of naphthalene and is soluble in ether, alcohol, chloroform, etc. It can be sublimated at room temperature and mixed with air. It can form an explosive mixture and belongs to the third-level dangerous goods. The specific gravity is 1.145, the boiling point: 218℃, the melting point: 80℃, and the explosion limit is 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 tied with a string, and the net weight of each bag is 25Kg.
Next product： Coking Refined naphthalene