8.20809

1-Methylnaphthalene

for synthesis

• Synonym(s): 1-Methylnaphthalene
• Empirical Formula (Hill Notation): C₁₁H₁₀
• CAS Number: 90-12-0
• Molecular Weight: 142.20
• MDL number: MFCD00004034
• UNSPSC Code: 12352005
• EC Index Number: 201-966-8
• NACRES: NA.22

Properties

• vapor pressure: 2 hPa ( 25 °C)
• Quality Level: 200
• assay: ≥94.0% (GC)
• form: liquid
• autoignition temp.: 529 °C
• potency: 1840 mg/kg LD₅₀, oral (Rat)
• expl. lim.: 0.7-6.5 % (v/v)
• bp: 244-245 °C/1013 mbar
• mp: <-30 °C
• transition temp: flash point 82 °C
• solubility: 0.026 g/L
• density: 1.02 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C11H10/c1-9-5-4-7-10-6-2-3-8-11(9)10/h2-8H,1H3
• InChI key: QPUYECUOLPXSFR-UHFFFAOYSA-N

Description

Application

• Solvent-assisted microextraction: 1-Methylnaphthalene was used in the development of sponge-like porous manganese(II, III) oxide coatings for solvent-assisted solid-phase microextraction, demonstrating its utility in environmental monitoring and analysis of polycyclic aromatic hydrocarbons (Saraji and Nobakht, 2022).
• Catalytic applications: As a tar-type compound, 1-Methylnaphthalene was investigated for its degradation under mild conditions using TiO2-supported Pd catalysts, emphasizing its importance in industrial applications for cleaner production technologies (Raad et al., 2021).
• Advanced oxidation processes: Research involving nano-MoO2 and peroxymonosulfate demonstrated the effective degradation of PAH derivatives, including 1-Methylnaphthalene, underscoring its relevance in water treatment technologies and pollution control (Chen et al., 2021).

Analysis Note

Assay (GC, area%): ≥ 94.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.015 - 1.025
Identity (IR): passes test

Safety Information

• pictograms: GHS07,GHS08,GHS09
• signalword: Danger
• hcodes: H302 - H304 - H411
• pcodes: P264 - P273 - P301 + P310 - P331 - P391 - P405
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Chronic 2 - Asp. Tox. 1
• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 2
• flash_point_f: 179.6 °F - closed cup
• flash_point_c: 82 °C - closed cup