Qualified products
≥77.5℃
The main purpose：Production of phthalic anhydride, dyes, resins, alpha-naphthoic acid and water-reducing agent such as raw materials.
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Refined Naphthalene：
Defined：The main ingredient is naphthalene, the product of the crystallization point in more than 79.3 ℃.
Implementation of standards：GB/T 6699-1998
Key Indicators：Crystallization point
Superior product ：≥79.8℃
First grade ：≥79.6℃
Qualified products：≥79.3℃
The main purpose：Used in the manufacture of dye intermediates, moth balls, leather, wood protection agents.
Industrial methylnaphthalene：
Defined：Re-processing of coal tar distillate, methyl naphthalene content of products in more than 60%.
Implementation of standards：YB/T 5153-93
Key Indicators：Methyl naphthalene content
First grade ≥70%
Second Grade ≥60%
The main purpose： Extraction of β-methylnaphthalene raw materials, production of raw MF dispersants.
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Wash oil：
Defined：Coal tar in the 230-300 ° C distillate.
Implementation of standards：GB/T 24217-2009
Key Indicators： Distillation range
230℃ Before 270℃ Before 300℃ Before
First grade≤3% ≥70% ≥90%
Second Grade ≤3% — ≥90%
The main purpose:Used as a wash benzene, washed naphthalene, extract methylnaphthalene, biphenyl, acenaphthene, fluorene and other raw materials.
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