Pigments & Colorants
REACH
1,4-naphthoquinone
CAS Number
130-15-4
EC Number
204-977-6
What is 1,4-naphthoquinone?
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.
Where is 1,4-naphthoquinone used?
- Rubber and polymer processing: retarder or co-agent regulating cure rates and crosslinking in vulcanization systems
- Printing and packaging: photosensitizer and intermediate for diazo-based coatings and photopolymer plates
- Textile and leather: dye synthesis for specialty colorants
- Paper manufacturing: catalyst precursor in pulping chemistry where controlled oxidation is required
- It functions primarily as a polymerization modifier and oxidation catalyst.
Commercial specifications
- Technical grade, purity typically 97% to 99%+
- Drum and bag packaging for industrial-scale procurement volumes
Other Names (Synonyms)
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
What are the physical properties of 1,4-naphthoquinone?
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℃
How is 1,4-naphthoquinone classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H301 Toxic if swallowed
H314 Causes severe skin burns and eye damage
H315 Causes skin irritation
H317 May cause an allergic skin reaction
Precautionary Statements
P233 Keep container tightly closed.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to 1,4-naphthoquinone?
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