1,4-naphthoquinone
Description
1,4-Naphthoquinone (CAS 130-15-4), also known as α-naphthoquinone, is a quinone compound used industrially as a catalyst component and chemical intermediate. It functions primarily as a polymerization modifier and oxidation catalyst.
In manufacturing processes requiring precise reaction control, it serves as a vital reagent. In rubber and polymer processing, it acts as a retarder or co-agent to regulate cure rates and crosslinking behavior in vulcanization systems.
The printing and packaging industry uses it as a photosensitizer and intermediate in the production of diazo-based coatings and photopolymer plates. Textile and leather processors apply it in dye synthesis for specialty colorants.
It is also utilized as an oxidative intermediate for producing colorants with targeted fastness properties. In paper manufacturing, it functions as a catalyst precursor in pulping chemistry where controlled oxidation is required.
This chemical improves fiber processing efficiency during the pulping stage. 1,4-Naphthoquinone is supplied as a yellow crystalline powder or flake solid, making it easy to handle in various industrial environments.
Technical grade is the standard commercial form, with purity levels typically ranging from 97% to 99%+. It is available in drum and bag packaging suited to industrial-scale procurement volumes for global distribution.
Physical Properties
| Melting Point | 126 °C |
| Boiling Point | 298 °C |
| Density | 1.422 g/cm³ |
| Flash Point | 141 °C |
| Appearance | 1,4-Naphthoquinone is a yellow to greenishyellow crystalline solid. Pungent odor like benzoquinone. |
| Color | Khaki |
| Form | Powder |
| Water Solubility | insoluble |
| Vapor Pressure | <1 hPa (50 °C) |
| Refractive Index | 1.5300 (estimate) |
| pH | 6.1 (10g/l, H2O, 20℃) |
| Log P | 1.71-1.77 at 25℃ |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29146910 |
| UN Number | 2811 |
| ADR Class | 6.1 |
| Packing Group | I |
| Storage Class | 6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials |
| WGK (Germany) | 3 |
Documentation
Other Names
α-naphthoquinone|p-naphthoquinone|alpha-naphthoquinone|4a,8a-dihydronaphthalene-1,4-dione|1,4-dihydro-1,4-diketonaphthalene|naphthalene-1,4-dione|1,4-Naphthalenedione|1,4-Naphthylquinone
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